Sunlighten mPulse Smart Infrared Sauna Review

The Sunlighten mPulse is the only full-spectrum infrared sauna with red light therapy on the market that allows you to customize each wavelength to better achieve your desired health benefits. 

In this review, I’ll tell you everything you need to know about this smart sauna, including why we decided to buy it and how we have incorporated sauna bathing into our family’s wellness routine.

Sunlighten mPulse Smart Sauna

Michael Kummer


The Sunlighten mPulse is the only full-spectrum infrared sauna with red light therapy on the market that allows you to customize each wavelength to better achieve your desired health benefits. 


  • Dedicated near, mid and far infrared heaters with red light therapy.
  • Customizable wavelengths.
  • Easy to assemble.
  • Non-toxic materials (low VOC).
  • Built-in control tablet.
  • Includes a chromotherapy feature and stereo speakers.


  • Price.
  • The Android control tablet could be more responsive.
  • Requires a dedicated 240V 20A circuit and outlet.

The Sunlighten mPulse is an excellent full-spectrum infrared sauna that provides dedicated heaters for each region of the infrared spectrum (far, mid and near), as well as several red light therapy panels that further boost the benefits of the near-infrared rays.

The mPulse is easy to assemble and made from high-quality, non-toxic materials. Our entire family has been enjoying this sauna on a regular basis, and we appreciate how much it has improved the quality of our lives.

If you’re new to sauna bathing, you might be wondering about the benefits of exposing your body to higher-than-normal temperatures.

There are several scientifically-validated positive outcomes, including:

  1. Relieves stress and tension.
  2. Improves recovery and circulation.
  3. Offers temporary pain relief.
  4. Mimics a cardiovascular workout.
  5. Burns calories.
  6. Increases resistance to illness.
  7. Helps get rid of toxins.
  8. Helps lower blood pressure.
  9. Helps build muscle and increases flexibility.
  10. Improves skin health.

If you’d like to learn more, read my in-depth list of the top infrared sauna health benefits.

Why We Chose Sunlighten

When I was growing up in Austria in the early 1980s, infrared saunas weren’t a thing yet. However, I did get exposed to traditional Finnish saunas during my time as a professional track and field athlete, when I was in my 20s. 

Our athletics club had several saunas and a steam room that we used in winter after intense workouts to relax and speed up muscle recovery. But that was almost 20 years ago, and it wasn’t until the summer of 2021 that I rediscovered the benefits of sauna bathing. 

I was attending a biohacking conference where Sunlighten was exhibiting their full-spectrum infrared saunas. I was intrigued and started researching to see if it was something I wanted to invest in. Once I realized how many health benefits infrared saunas offer, I wanted to get one and started comparing the different brands on the market.

Based on my findings, I decided to give Sunlighten a try because they seemed to offer the most advanced product (as far as the technology is concerned), because they use only non-toxic materials, and because they test all of their saunas for EMF levels.

More importantly, Sunlighten’s top-of-the-line sauna (the mPulse) is a true full-spectrum infrared sauna with dedicated heaters for each of the three infrared wavelength segments. Additionally, Sunlighten added a touchscreen to the mPulse, which allows you to customize each wavelength depending on the specific benefits you want to achieve.

The combination of these factors made Sunlighten the winner over some of the other good IR saunas on the market, including Clearlight.

I should also mention that the mPulse wasn’t the first Sunlighten infrared sauna we had at home. The company sent me a review unit of their one-person sauna (the Sunlighten Solo) to use for several weeks, before I committed to purchasing the mPulse. Check out my in-depth Sunlighten Solo review if you’d like to learn more about it.

Sunlighten mPulse Infrared Smart Sauna Review

Sunlighten’s product portfolio consists of three different sauna cabins, including the Signature series, the Amplify series, and the mPulse series.

The mPulse series is the company’s top-of-the-line product and features dedicated heaters for each of the three infrared light spectrum segments (near, mid and far infrared), as well as customizable wavelengths to obtain the maximum possible benefits.

Additionally, the mPulse includes a fully-featured Android touchscreen tablet that allows you to select from a list of predefined sauna programs, create your own custom program, schedule sauna sessions, watch Netflix shows and more. The built-in stereo sound system and light therapy features turn the mPulse into your personal wellness oasis and help you relax and recharge after a stressful day or an intense workout.

What’s new with the latest-generation mPulse is the inclusion of red light therapy panels to boost further the benefits the near-infrared heaters deliver. To learn more, check out my recent article about the unique health benefits associated with combining red- and near-infrared light.

To learn more about the differences between the various saunas Sunlighten offers, check out the comparison table below.

Capacity, Size and Dimensions

The Sunlighten mPulse is available in five different capacities, providing space for up to five people. The image below illustrates the five cabin sizes.

We initially chose the two-person mPulse Believe because its 52” x 48” footprint was a perfect fit for the available space next to our Cold Plunge. However, I was somewhat concerned that a two-person sauna cabin might end up being like a two-car garage: technically big enough for two people, but not big enough for two people to fit inside comfortably.

My wife and I both have busy schedules and usually use the sauna solo, so I was going back and forth between the Aspire (one person) and the Believe (two people), before finally pulling the trigger on the latter.

Fortunately, my concerns turned out to be unfounded! The mPulse Believe is wide enough to accommodate two people side-by-side without any issues. In a pinch, you can even fit two adults and a kid on the sauna bench. It’s tight, but we’ve done it on a few occasions and didn’t mind it. 

Despite having plenty of room in the Believe, we did ultimately decide to upgrade to the three-person mPulse Conquer Smart Sauna, pictured below. The Conquer gives us a little more flexibility to use the sauna with the kids, or with friends who might appreciate a bit more personal space than offered by the Believe. 

Here’s a quick overview table comparing the dimensions of the different Sunlighten cabin sizes.

Note that all mPulse saunas are 78.5 inches tall, including the 2-inch feet on the bottom.

I should also mention that the number of heaters goes up with the capacity of the sauna. For example, the one-person mPulse Aspire has five far infrared heaters, four mid infrared heaters, and three near infrared heaters (for a total of 12 heaters). In contrast, the five-person mPulse Empower features a whopping 32 heaters.

To get more details on the individual specs of each sauna model, check out this mPulse overview page and click on the capacity you’re interested in.

Materials and Craftsmanship

In addition to the capacity options noted above, the Sunlighten mPulse also comes in a variety of wood finishes, including:

  • Eucalyptus
  • Basswood
  • Eucalyptus outside/cedar inside

The materials for all three options come from responsibly-managed forests and look great. For our first mPulse, we decided to go with basswood because it was reasonably priced, hypoallergenic and fragrance-free.

In comparison, eucalyptus is slightly more durable and darker in appearance. The eucalyptus/cedar option is also darker in appearance and offers noise-reducing benefits. Plus, cedar wood has a pleasant, natural fragrance to it.

If you plan on using your mPulse sauna outdoors, you should get a model that has eucalyptus wood on the exterior and purchase Sunlighten’s sauna cover so as not to void your warranty.

Note: Since I had an existing relationship with Sunlighten, I didn’t go through the normal sales process when purchasing my first mPulse. That’s why I didn’t realize that I should have gotten the eucalyptus model, considering that our plan was to use the sauna outdoors. Fortunately, Sunlighten agreed not to void my warranty as long as I ordered the sauna cover to protect the sauna from the elements.

When we upgraded to the mPulse Conquer, we didn’t want to make the same mistake again and went with the eucalyptus/cedar model.

In case you’re wondering, for the two-person mPulse Believe, there is roughly a $600 difference between the basswood (cheapest) and eucalyptus/cedar (most expensive) models.

Infrared Heaters

Two of the features that set the mPulse series apart from all of the other infrared saunas I’ve looked at are the dedicated heaters for each of the infrared light spectrum segments and the ability to customize each wavelength based on what benefits you want to achieve.

In comparison, most other “full spectrum” infrared saunas only have far infrared heaters that just happen to emit some residual mid and near infrared radiation, which may not be sufficient to achieve the benefits that mid and near infrared light have to offer (such as improved skin health, increased energy production in the mitochondria, faster wound healing and increased collagen production).

Each mPulse sauna has between 12 and 32 SoloCarbon heaters, depending on the size of the sauna. For example, the mPulse Conquer we have at our home features eight far infrared, seven mid infrared and five near infrared/red light combo heaters hidden behind seven (mostly fabric-covered) panels.

The fabric Sunlighten uses to cover its SoloCarbon heaters is made from highly-emissive materials that are easy to clean using a damp cloth. 

Our two-person sauna has heaters on the back and side walls, in the floor, and on the front panel next to the glass door. As a result, we get almost 360 degrees of exposure to infrared radiation.

However, I should mention that the left side of the bench (which has the door in front of it) doesn’t get quite as hot as the right side (which has a heater right in front of it). That’s why I usually sit on the right side when I use the sauna together with my wife; while she’s less sensitive to heat, I prefer to sweat as much as possible and usually claim “the hot seat.”

Speaking of temperature: the mPulse’s heaters can get up to 150 degrees Fahrenheit. While that’s much lower than you’d experience in traditional steam saunas, it’s plenty hot (as you can see by how much I’m sweating in the picture below).

More importantly, the temperature inside an infrared sauna isn’t the most important factor as far as health benefits are concerned.

What matters most is how deeply the infrared radiation penetrates your tissue, and how well your body absorbs that radiation. In other words, the emissivity of the panels and their exact wavelength (as measured in microns) are the key factors.

Sunlighten’s infrared heaters are 99% emissive and most of the emitted far infrared radiation is in the 9.4 micron range (which is best absorbed by the human body). That’s why Sunlighten’s SoloCarbon heaters are so effective at delivering their numerous health benefits — even at temperatures way below traditional saunas. 

In comparison, most of the less-expensive infrared saunas on the market have heaters with much lower emissivity.

For example, a friend of mine wanted to purchase this infrared sauna cabin from Costco. Upon investigation, we discovered that the heaters built into that sauna are only 86% emissive, translating into less tissue penetration and health benefits.

Sauna Programs

Using the Sunlighten mPulse’s 10.1-inch touchscreen, you can select from several predefined sauna programs, including:

  • Detoxification
  • Weight Loss
  • Relaxation
  • Pain Relief
  • Anti-Aging
  • Cardio

Each of the programs uses different wavelengths and intensities to deliver the optimal benefits. 

Here’s a quick comparison table that illustrates the differences between the programs:

Time IR Intensity
Detoxification 37 min Far + Mid High > Low
Weight Loss 30 min Far + Mid High > Medium
Relaxation 40 min Far + Mid + Near + Red Low
Pain Relief 30 min Far + Mid + Near + Red Medium
Anti-Aging 30 min Far + Mid + Near + Red Low
Cardio 45 min Far + Mid + Near + Red High > Medium
As you can see in the table above, some of the predefined programs start at a high intensity but then lower it to maintain a certain heart rate or level of circulation.

In addition to the predefined programs, you can create up to eight custom programs that can vary in length (up to 60 minutes), temperature, and type of heaters used.

In fact, you can customize the intensity of both the far and mid infrared spectrum of each of the panels in your sauna and decide whether or not to enable near infrared radiation on panels that support it.

Besides using a predefined or custom program, you can also just turn the sauna on and set it to a certain temperature. Doing so will engage all of the built-in heaters and infrared spectrums.

Assembly and Installation

After my wife and I built a chicken coop in our backyard, I figured we wouldn’t have any trouble putting together an infrared sauna over a weekend. To our surprise, it took nowhere near that much time, requiring just a bit more than two hours to assemble all the pieces. 

In fact, taking the individual components out of the two big boxes they arrived in, and carrying them one by one from the driveway to the backyard, took almost as much time as assembling the sauna.

It’s worth noting that the reason we had to carry the sauna components to their final location one by one was that each box weighed over 700 pounds. And while I had help from a friend, the size and shape of the boxes made it impossible to carry them.

Once we had all of the pieces in our basement (which we used as the staging area for pre-assembly), my wife and I had no issues putting everything together. The only thing we had to do before setting everything up was to have our electrician install a dedicated electrical circuit with an outdoor-rated GFCI outlet.

While the previous generation mPulse (the one without red light therapy) required only a dedicated 120V 20A outlet, the new mPulse Smart Sauna requires a dedicated 240V 20A circuit with a NEMA 6-20R outlet. (Your electrician will know what that means!)

What made the assembly so easy was the fact that we didn’t have to use any power tools (though I leveraged an electric drill to unscrew the roofing panels, which is required to connect some of the wires). All of the panels interlock using wooden dowels, magnets and hooks. The only few screws we used were for the feet on the bottom of the floorboard and the door handle — nothing else required screws or nails.

The one thing we should have done before putting everything together was to level the sauna floor. We decided to place our first mPulse on our lower patio, right next to the exterior wall of our basement, and I didn’t realize that the slab there is slightly slanted to allow water to run off and away from the house. 

As a result, the bottom of the sauna cabin wasn’t level, making it more difficult to hang and adjust the glass door. Fortunately, we were able to fix that problem after the fact by using a couple of shims that we wedged between the slab and the feet.

Once the structure was set up, I powered up the Android tablet and registered the sauna using the Sunlighten app and the serial number that was printed on a tag attached to one of the panels. 

Prior to installing our second mPulse on a patch of grass (covered with mulch) next to our Finnish steam sauna, we leveled the area and used cinderblocks (instead of the provided wooden blocks) to prop it up.


The ongoing maintenance for Sunlighten saunas is relatively straightforward, depending on whether you have your sauna outdoors or indoors.

Our mPulse sauna is located outdoors in our backyard. That means we constantly bring in debris that sticks to our feet and needs to be vacuumed every so often. If you have your sauna indoors or use a floor mat (we haven’t gotten around to purchasing one) in front of the entrance door, there shouldn’t be a need for regular vacuuming.

Additionally, every few weeks you might have to wipe the fabric that covers the heaters with a damp cloth to keep it free of any dust that might have accumulated.

One part of the sauna that you might be cleaning more often is the glass door, because it attracts fingerprints and smudges. Sunlighten sells a natural cleaning kit you can use for the glass and wood interior, but any natural cleaner should do.

Just don’t use any harsh chemicals on the inside of your sauna. You don’t want to inhale those toxins or get them onto your skin (especially with your pores wide open), and the chemicals might damage the wood. We typically use TotalClean, a non-toxic household cleaner from HypoAir.

Sunlighten also suggests using light sandpaper to remove stains from the wood interior. The idea is to remove a very thin layer of the stained wood without damaging it.


The mPulse features ventilation slots in the ceiling that you can open or close to allow stale air and humidity to escape from the cabin. We usually keep the slots closed during sauna sessions, and open them before we get out.

I also recommend keeping the sauna door open for a few minutes after each session to allow any residual moisture from your sweat to evaporate.

Taking these steps can help prevent odors from building up inside the cabin.

Touchscreen and Speakers

The two ceiling-mounted speakers offer a better sound quality than I expected from a sauna.
The two ceiling-mounted speakers offer better sound quality than I expected from a sauna.

The Sunlighten mPulse is equipped with a 10.1-inch tablet powered by Android and a Blaupunkt stereo system with two speakers.

The tablet works just like any other Android-powered device, which means you can download apps, listen to music, watch videos and browse the internet (assuming you connect it to your home WiFi network).

I’m an Apple guy and don’t have much experience with Android, but if you’ve ever used a tablet, you’ll figure it out pretty quickly.

One thing I’ve noticed is that the tablet Sunlighten built into the sauna isn’t comparable to the iPad Pro I’m used to, in terms of performance and responsiveness. In other words, launching apps or switching between apps just takes a second longer than I expect.

Note: I've heard that Sunlighten is working on upgrading the tablet in its mPulse saunas. If an upgrade is eventually offered, I'll make sure to test it and update this review.

Out of the box, the tablet’s brightness also makes the screen hard to read if there’s sunlight hitting the screen (as is often the case in the afternoons at our home). Fortunately, cranking up the brightness to 100% via the display settings mitigated that issue for the most part.

It’s worth noting that Sunlighten added a USB-A port right underneath the screen of the tablet so you can open files (music, videos, documents, etc.) that are stored on a USB stick. 

Regarding the sound system, I found it surprising that Sunlighten went with Blaupunkt, a traditional German brand that I grew up with. I remember that when I was a kid, everyone wanted to have a car stereo made by Blaupunkt because the brand was known for high-quality car audio.

The previous-generation mPulse had an actual car radio built in for volume control, as show above. In the new mPulse Smart Sauna, you control the volume and everything else via the Android tablet.
The previous-generation mPulse had an actual car radio built in for volume control, as shown above. In the new mPulse Smart Sauna, you control the volume and everything else via the Android tablet.

Obviously, if you’re a lover of high-end audio equipment, don’t expect the Sunlighten mPulse to blow you away. But for the average user, the sound is certainly good enough to listen to a podcast or to watch a show on Netflix.

Red Light Therapy

Unlike previous generations of the mPulse, the latest generation includes several red light therapy panels that work in tandem with the near-infrared heaters to provide unique health benefits, including:

  • Anti-inflammatory effects
  • Better sleep
  • Enhanced detoxification
  • Eye health
  • Hair growth
  • Improved cellular function
  • Reduced muscle fatigue and pain
  • Skin rejuvenation

The first thing you’ll notice when you turn on the mPulse using “Quick Mode” (or most of the other available programs) is that the sauna’s red light panels come on automatically. In other words, unlike the infrared heaters, you can’t control or enable/disable them individually.

The only two programs that don’t use the red light therapy feature are Detoxification and Weight Loss. (And that’s because red light doesn’t offer any benefits for those two use cases).

It’s worth mentioning that the red light therapy panels built into the mPulse don’t offer the same irradiance (light output) as dedicated red light panels, such as the MitoPro 1500 that I have in my office.

In other words, you may not get the same benefits, particularly if you fail to maintain a close distance between the heaters and your skin (because the farther away you are from the light source, the less energy reaches the target tissue).

Despite the lower power output of Sunlighten’s red light panels, I still consider the mPulse to be superior to stand-alone red light panels, considering the combined benefits of full-spectrum infrared and red light (most red light panels emit only near-infrared and red light).


One feature that I learned to appreciate while testing the Sunlighten Solo is chromotherapy, which is also known as color therapy.

I won’t repeat everything I wrote about chromotherapy in my Sunlighten Solo review, but in a nutshell, color therapy may positively impact the release of certain hormones (such as serotonin) that have calming effects, while also providing a range of other benefits.

Sunlighten has implemented chromotherapy via two ceiling-mounted LEDs that you can operate using a remote control. For example, you can set a specific color (depending on the benefits you want to achieve), or enable a mode that alternates between different colors.

Acoustic Resonance Therapy

The bench-mounted speakers enable acoustic resonance therapy.
The bench-mounted speakers enable acoustic resonance therapy.

The newest version of the mPulse also offers optional acoustic resonance therapy (ART), which is an interesting upgrade for users with anxiety or similar stress-induced ailments. ART leverages the power of low-frequency audio waves to help you relax and recover.

Sunlighten implemented this feature using a dedicated amplifier and two speakers that are mounted under the bench right in front of one of the heating panels. Those speakers send sound vibrations through the wood into your body to create a physical sensation that’s meant to induce deep relaxation and tension release.

The field of acoustic resonance therapy (aka sound therapy) is still evolving, and scientists don’t fully understand its mechanisms of action yet. However, the research on the subject we have so far looks promising.

I’ve experimented with sound therapy before, using both TouchPoints and the Apollo Neuro Wearable to help reduce stress levels, lower my blood pressure, speed up recovery, and positively influence my autonomic nervous system. My experience so far has been positive, so I think this upgrade could be worth considering if you’re interested in targeting any of the health benefits mentioned in this section.

Is the Sunlighten mPulse Worth It? (Pricing)

The Sunlighten mPulse is the company’s top-of-the-line product, and the price tag reflects that fact. 

While the company doesn’t publish pricing information because each system is configurable based on the customer’s specific needs, the least expensive Sunlighten sauna (the Sunlighten Solo) begins at $2,600. 

If you want to get a quote for the exact Sunlighten sauna you’re interested in, you can use this link. When you do, make sure to mention promo code “Michael Kummer.” That will knock either $500 or $600 off your quote (depending on the size of sauna you choose).

I should also mention that Sunlighten offers 0% financing options that you can explore after you receive the quote.

Get Pricing

What I Would Improve

Overall, I’m very happy with our Sunlighten infrared sauna and don’t think there’s too much that needs to be improved.

The only two things I’d like for Sunlighten to change are:

  • Add adjustable feet to make it easier to level the sauna.
  • Upgrade the Android tablet to a more powerful device to improve the responsiveness of the screen (Sunlighten is reportedly working on an upgraded tablet).

When I first published this review, I mentioned that the other feature that would be nice to have is the ability to turn on the sauna remotely using a mobile app. That way, it would be possible to heat up the sauna in advance — i.e., while you’re on your way back from the gym, for example — instead of turning it on and then having to wait up to an hour for it to get hot.

The good news is that Sunlighten listened and delivered a mobile app for iOS and Android.

On a side note, I should mention that I had some issues connecting to our sauna via its web interface ( and mobile app, which were caused by the Android operating system closing the Sunlighten app due to memory constraints.

To mitigate this issue, Sunlighten released a helper app that periodically checks if the main app is running and, if not, it relaunches the app. While not ideal, it’s a feasible workaround until Sunlighten releases an upgraded tablet that has more memory.

Sunlighten mPulse EMF Emissions

Sunlighten has conducted third-party tests to measure the EMF emissions of their sauna cabins. However, I decided to conduct my own tests to verify the company’s claims.

The table below shows EMF readings before and after turning the sauna on. Keep in mind that I don’t have access to an EMF-free lab environment, so the readings below include the normal EMF levels around my patio (such as those caused by wireless access points and other devices in proximity).

mPulse Off mPulse On
Magnetic 0.4 mG 0.5 mG
Magnetic (Peak) 0.5 mG 0.6 mG
Electric 5 V/m 95 V/m
Electric (Peak) 6 V/m 101 V/m
RF 0.017 mW/m2 0.033 mW/m2
RF (Peak) 0.733 mW/m2 0.414 mW/m2
I took these readings using a Trifield TF2 EMF meter by holding it right next to the control board of one of the heaters.

As you can see, with the exception of electric emissions (from the heater control board), the mPulse adds very little to the overall EMF exposure in the area.

How We Use the Sunlighten mPulse Infrared Smart Sauna

My wife, our kids and I all use our infrared sauna several times a week. We don’t have a fixed schedule — we just hop in whenever we feel like it.

However, I should mention that it takes up to an hour for the sauna to heat up (depending on how hot you like it), so you can’t just jump in and expect it to be ready immediately.

The good news is that you can also schedule your sauna sessions using the integrated tablet, mobile app or web interface. So if you know you’ll want to use the sauna in the afternoon, you can program it to turn itself on ahead of time.

We schedule our sauna sessions only occasionally. Most of the time, we just turn it on and wait for 45-60 minutes before getting in.

Beyond that, we’ve enjoyed sauna sessions at various times of the day, including in the evening to relax and get ready for bed. 

I’ve also started combining sauna bathing with cold plunging.

Out of all the health benefits infrared saunas offer, improving recovery after intense workouts (and pain relief), balancing the immune system, and relaxation are the driving factors behind why my wife and I spend 30-40 minutes, several times a week, in our infrared sauna. 

We just feel good, relaxed and rejuvenated after each session — especially after a stressful day of parenting two kids, writing blog posts, recording YouTube videos, cooking all of our meals from scratch, hitting the gym hard, caring for our chickens and bees, and keeping everything in between running smoothly.

Sunlighten mPulse vs. Amplify vs. Signature

After having had a chance to use the portable Sunlighten Solo sauna for several weeks, I decided I wanted to purchase a walk-in sauna that my wife and I could use together.

Browsing through Sunlighten’s product page made me realize there were several options I could choose from, and I wasn’t entirely sure which model to get based on our requirements and the health benefits we wanted to target.

To make it easier for you to pick the right type of Sunlighten infrared sauna, here’s a side-by-side comparison table.

mPulse Smart Sauna Amplify II Signature II
Price 💰💰💰 💰💰 💰
Capacity 1 to 5 people 2 to 3 people 1 to 4 people
Temperature Hot Hotter Hot
IR spectrum Full (dedicated near/mid/far IR heaters) Full (no dedicated near/mid IR heaters) Far IR only
Red light therapy Yes No No
Customizable programs Yes No No
Sound system Yes Yes Yes
Acoustic resonance therapy Optional Optional Optional
Chromotherapy Yes Yes Yes
Android tablet Yes No No
Low VOC/EMF Yes Yes Yes
Finishes Basswood, eucalyptus, eucalyptus/cedar Basswood, eucalyptus Basswood, eucalyptus

In a nutshell, the Sunlighten Signature series is the most affordable full-size far infrared sauna in the company’s lineup. It features multiple SoloCarbon far infrared heaters that produce infrared radiation of the highest quantity and quality. The Signature II gets as hot as the mPulse (Sunlighten’s most expensive sauna) and is available in one to four person capacities. 

You also get the same Blaupunkt sound system and chromotherapy features as in the more expensive models.

I’d recommend the Sunlighten Signature to anyone who is on a budget and wants to get the biggest bang for their buck.

The Sunlighten Amplify II is a mix between the Signature and mPulse in the sense that it does have heaters that emit full spectrum infrared radiation but to a lesser degree than the dedicated panels in the mPulse (as far as near and mid infrared radiation is concerned). In other words, you get some near and mid infrared radiation but not to the extent you get with the mPulse. 

Additionally, the Amplify II doesn’t have a tablet that allows you to choose from different programs, or offer the ability customize each wavelength based on the benefits you want to achieve.

However, the Amplify II does get hotter than both the mPulse and the Signature, and it heats up faster. For comparison, if we heat up our mPulse for 60 minutes, the air temperature inside of the sauna climbs to about 145 degrees. The Amplify II will heat up the air to 165 degrees in the same timeframe. 

For most people, that doesn’t make a measurable difference as far as health benefits are concerned. But if you want to use sauna bathing as an alternative to a regular cardio workout, or if you’re a professional athlete who wants to maximize muscle recovery, then the Amplify II might be a good option.

The mPulse is Sunlighten’s top-of-the-line product that has all the bells and whistles you might expect, including dedicated heaters for each of the infrared spectrum segments (near, mid and far infrared). As a result, it offers the most health benefits, including anti-aging, collagen production, wound healing and more. 

And as mentioned elsewhere in this article, the mPulse also features an Android-based control panel you can use to pick from any of the predefined sauna programs, watch Netflix movies or listen to your favorite music.

Frequently Asked Questions

Top 13 Things to Consider When Buying an Infrared Sauna

Below is a list of the most frequently asked questions I’ve come across, including some of the questions I had before I decided to purchase the mPulse.

Does the Sunlighten mPulse offer the same health benefits as a traditional steam sauna?

While it’s true that infrared saunas and traditional saunas offer a different sauna experience, they provide similar health benefits. I would even argue that infrared sauna therapy offers more health benefits (e.g., improved skin health) as compared to steam saunas.

For example, infrared rays can trigger an increase in collagen production in the skin, which can help improve overall skin health, including reductions in the appearance of stretch marks and wrinkles. That’s an added health benefit that you won’t get from a traditional (steam) sauna.

At the same time, infrared and steam saunas provide similar health benefits in the areas of immune support, the release of growth hormones and testosterone, and the release of heat shock proteins.

The misconception many people have is that infrared saunas are less effective because they don’t get as hot as traditional saunas. The truth is that infrared rays deliver the same energy (heat) into your tissue as hot and humid ambient air. It’s just that the latter doesn’t penetrate your skin and soft tissue nearly as well as infrared radiation, so steam saunas have to be hotter to deliver the same benefits as their infrared cousins.

Can infrared sauna use improve your heart health?

Yes, infrared radiation improves blood flow and heart health by exposing your body to heat stress. When your core body temperature rises, your nervous system reacts by dilating your blood vessels and increasing your heart rate in an attempt to cool you down.

That natural response to heat stress has similar benefits to regular exercise.

In other words, subjecting yourself to the infrared rays in your sauna mimics a mild cardio workout, which is an excellent way to improve your heart health.

Can you use a Sunlighten sauna outdoors?

Yes, you can use most Sunlighten saunas outdoors (including the mPulse) if you pick the appropriate wood finish (eucalyptus). The basswood finish isn’t meant to be used outdoors and doing so might void your warranty.

Regardless of what sauna you choose, make sure you also get the Sunlighten sauna cover that fits your sauna to keep it protected from the elements (and to keep your warranty valid).

Do you need a dedicated power circuit to operate a Sunlighten sauna?

For the Sunlighten mPulse Smart Sauna, you need a dedicated 240V 3600W 20A NEMA 6-20R circuit and outlet. For the Signature and Amplify, you need a dedicated 120V 2400W 20A NEMA 5-20R, 5-20P circuit and outlet.

Does the Sunlighten mPulse emit electromagnetic radiation?

Yes, all infrared saunas emit electromagnetic fields (EMFs). However, Sunlighten tests all of their infrared saunas using a third-party testing facility to ensure ultra-low EMF radiation. You can check out the results of a test conducted by a third-party lab here, or refer to my testing in the table above.

Does the Sunlighten mPulse get hot enough?

While your sensitivity to heat might be different than mine, I’d say the Sunlighten mPulse gets hot enough to deliver the maximum possible benefits. I’m soaked in sweat every time I step out of our mPulse.

According to Sunlighten and the tests they’ve conducted, you get the most benefit out of an infrared sauna session at temperatures between 100.4 and 129 degrees Fahrenheit (38 to 54 Celsius) — or as long as you’re sweating. That’s because it’s not the temperature of the ambient air that elicits the health benefits of saunas but the infrared radiation that penetrates the skin and heats the body from the inside.

Can you assemble the Sunlighten mPulse by yourself? 

Yes, the Sunlighten mPulse is relatively easy to assemble, even if you’re not a handyman (but you will need help from a second person). It took me and my wife less than two hours to set it up and get it fully operational.

Should you stain the exterior of your Sunlighten sauna?

No, because doing so might void your warranty. Also, make sure to get Sunlighten’s sauna cover if you plan on using your sauna outdoors.

How long does it take for the mPulse to heat up?

The sauna takes 45 to 60 minutes to warm up at a rate of approximately one degree per minute. If it’s really cold outside, the sauna might take even longer to warm up. 

How long should you stay in the mPulse?

Based on the benefits you want to achieve, 30 to 45 minutes appears to be the sweet spot. If you’re new to sauna bathing, stay as long as you feel comfortable to allow your body to get used to the intense heat.  

Can you rest your back against the fabric that covers the heaters?

Yes, you can — just be careful not to damage the infrared LEDs behind the fabric. I usually try to rest my back only against the wood and avoid leaning on the fabric.

How much does it cost per month to operate the Sunlighten mPulse?

The mPulse Smart Sauna operates at 3,600 watts (roughly 50% more than a blow dryer) and costs approximately 21 cents per hour (here in Georgia). Depending on how much electricity costs where you live, it might be a bit more or a bit less.

What time of day should you use the Sunlighten mPulse to get the maximum health benefits?

As far as I’m concerned, there is no specific “ideal” time to use your Sunlighten sauna. I’m opportunistic and use our sauna whenever I have time.

Generally, I enjoy sauna bathing after intense workouts to speed up muscle recovery, and in the late afternoon or evening to help relax and prepare my body for sleep.

If you just want to get a good cardio workout and support your body’s detox pathways, you can use the sauna any time of the day.

How do Sunlighten saunas compare to Clearlight saunas?

I don’t have any hands-on experience with Clearlight saunas, so I can only go by the information published on the company’s webpage. In a nutshell, the Clearlight Sanctuary full-spectrum infrared saunas are similar to the Sunlighten Amplify series in regards to their IR heaters. 

In other words, Clearlight uses far infrared heaters that also emit some near and mid infrared radiation instead of offering dedicated heaters for each of the IR segments.

On the bright side, Clearlight’s saunas emit even lower EMF levels than Sunlighten’s saunas. However, Clearlight doesn’t use non-toxic materials that are low in VOCs.

Wrap-Up: We Love the Sunlighten mPulse

The Kummer spa, featuring the Cold Plunge and Sunlighten mPulse.
The Kummer spa, featuring the Cold Plunge and mPulse Believe, before we upgraded to the larger mPulse Conquer.

Based on the research I’ve done and my personal experience, I consider the Sunlighten mPulse to be the best infrared sauna on the market.

Its infrared panels have incredibly high emissivity, thus delivering infrared radiation in the right quantity and quality necessary to achieve the desired health benefits. Plus, the mPulse is well-built from high-quality, non-toxic materials, and the wood is sourced from regenerative sources.

Combined with the built-in tablet, the sound system and chromotherapy features, the Sunlighten mPulse is a premium sauna that has all of the bells and whistles you could ask for.

We’ve had the mPulse since early 2022 and absolutely love it. However, I should mention that we recently added a traditional steam sauna to the spa area in our backyard, so that we can learn more about the differences between these two sauna types.

That said, as much as I love sweating at 220 degrees and high humidity, I frequently opt for our mPulse instead of the steam sauna — particularly when I’m sore or injured, or when I want to catch up on the latest videos from the homesteading channels I follow on YouTube.

If you’re considering purchasing an infrared sauna to improve the quality of your life and you have additional questions, don’t hesitate to ask by leaving a comment below! You can also refer to my infrared sauna buying guide, which goes over the key factors to consider.

And if you’re not sure you have the space for a walk-in sauna like the mPulse, check out my review of the one-person alternative from Therasage, the Thera360 PLUS, which is a portable full-spectrum infrared option that we currently have set up in our family room.

Medical Disclaimer

The information shared on this blog is for educational purposes only, is not a substitute for the advice of medical doctors or registered dieticians (which we are not) and should not be used to prevent, diagnose, or treat any condition. Consult with a physician before starting a fitness regimen, adding supplements to your diet, or making other changes that may affect your medications, treatment plan or overall health. and its owner MK Media Group, LLC are not liable for how you use and implement the information shared here, which is based on the opinions of the authors formed after engaging in personal use and research. We recommend products, services, or programs and are sometimes compensated for doing so as affiliates. Please read our Terms and Conditions for further information, including our privacy policy.

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