Sunlighten 3-in-1 Smart Sauna
Sunlighten mPulse Believe
4.4 out of 5Sauna Monthly verdictSunlighten's mPulse Believe is a two-person smart sauna that delivers red light and near-, mid- and far-infrared as separate programmable wavelengths through PulseIQ technology and an Android touchscreen. It plugs into a dedicated 120V/20A outlet, and Sunlighten describes the heaters' EMF as virtually undetectable.
- Full-Spectrum
- 120V Plug-In
By quote
We may earn a commission when you buy through this link, and you pay the same price. Price as recorded in our catalogue on Oct 12, 2026.
Good to know: Sunlighten sells the mPulse by quote and posts no price. On Oct 6, 2026, the affiliate store Outliyr listed the Believe at $8,699 against $9,399, and Sunlighten's site advertised up to $2,300 off saunas. Sunlighten's Sep 2026 spec sheet gives 2,400W on a dedicated 120V/20A circuit with a NEMA 5-20 plug, from six far-, five mid- and four near-infrared/red LED panels.
- seats
- 2
- household outlet
- 120V
- our rating
- 4.4/ 5
4.4
Out of 5 · Our rating
Sauna Monthly verdict
“Full-spectrum is done properly here, and it pays off if you'll use every band.”
Sunlighten's build quality is real, and its full-spectrum SoloCarbon heaters add near- and mid-infrared to far-infrared in one cabin. You pay heavily for that range, and the quote-only pricing adds friction. It's worth paying if you want the widest spectral toolkit and Sunlighten's finish. Otherwise, a plug-in far-infrared cabin covers most of what the research supports for roughly half the price.
Read the full reviewBefore you order
This page gathers what Sunlighten publishes about the mPulse Believe, checked Oct 12, 2026, and adds up what it costs to install. Our verdict on it runs in Sunlighten mPulse review: are the Conquer and the Believe worth the premium?.
Who should buy the mPulse Believe?
The mPulse Believe suits two people who want red light and all three infrared bands in one cabin, each dosed by its own program, and who'd rather not pay for a 240V circuit. Sunlighten puts it on a dedicated 120V/20A outlet, and a tablet on the wall runs its preset sessions. You'll pay a few thousand dollars more than a far-infrared cabin of the same size.
If a third person will join you, look at the Conquer, which seats three and moves to 240V. Two people who mostly want a hard sweat should price Sunlighten's far-infrared Signature II instead. It listed for about $3,200 less when we checked.
What does it take to install?
Sunlighten specifies a dedicated 120V/20A circuit with a NEMA 5-20 outlet, the kind with a sideways slot beside one prong. Plug the cabin straight into the wall, because Sunlighten rules out power strips and extension cords. Its 10-foot cord leaves from the back-left corner of the floor, so put the outlet within reach of that corner. The tablet needs dual-band Wi-Fi as well.
Assembled, the Believe takes a footprint of about 52 by 48 inches and stands 79 inches tall on its feet. Sunlighten asks for 4 inches at the walls and 6 above the roof, which still fits under an 8-foot ceiling with room to spare. The cabin weighs close to 500 lbs in basswood and 551 in eucalyptus, and the wall panels ship in cartons 76 inches tall, so measure every doorway on the way to the room.
What does the mPulse Believe cost all in?
| Cost | Amount | Where the figure comes from |
|---|---|---|
| List price | By quote | Sunlighten sells it by quote and posts no price. |
| Shipping | $0 | Sunlighten lists free shipping within the contiguous US on its own orders. |
| Dedicated 120V/20A circuit and NEMA 5-20 outlet | $0 if the room has one | An electrician adds one if it doesn't, and Sunlighten's quote won't cover that. Our permits guide explains what a new circuit involves. |
| Assembly | $0 if you build it | Sunlighten publishes a step-by-step assembly guide for the Believe. |
Sunlighten sells the Believe by quote and posts no price. When we checked, the affiliate store Outliyr listed it at $8,699 against $9,399, so ask Sunlighten which of its running offers applies before you sign. By our math the Believe comes to about $8,700 before tax in a room that already has the outlet, and the electrician's bill goes on top if it doesn't.
This page draws on Sunlighten's mPulse Believe product page and its Believe spec sheet (Doc# 09142026), read Oct 12, 2026, Outliyr's listing of the Believe on the same day and the Sunlighten and Clearlight cabins in our catalogue. The all-in figure is our arithmetic.
Sunlighten mPulse Believe in the wild. Sunlighten photography.
See it in action
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Sunlighten mPulse Believe V2 Assembly & Disassembly
By the numbers
What it costs to run
Electricity for an infrared cabin at a typical 2 kW
- Per session
- 17¢
- Per month
- $3.65
- Per year
- $44
Sessions of 45 minutes at 16¢ a kWh, with the panels cycling as it holds temperature. 16¢ is the US average. Work it out for your own numbers.
How hot it gets
Infrared heats your body at a lower air temperature
104°F50°C
122°F60°C
140°F70°C
158°F80°C
176°F90°C
194°F100°C
212°F110°C
230°F
The Sunlighten mPulse Believe is an infrared cabin. Its panels warm your body directly while the air holds around 45–60°C (113–140°F), so sessions run 30 to 45 minutes. A traditional sauna heats the air to 80–100°C. Infrared or traditional?
What to know before you buy
Full-spectrum, 120V plug-in. These decide whether it suits your space and your electrical panel.
- Full-SpectrumA full-spectrum cabin gives you the widest wavelength coverage you can buy, since it adds near and mid infrared to far infrared in one room.
- 120V Plug-InA plug-in model runs on a standard household outlet, so you won't need an electrician. Check whether it needs its own dedicated circuit.
Specifications
From Sunlighten’s own listing, checked when the page was written.
| Brand | Sunlighten |
|---|---|
| Model | Sunlighten mPulse Believe |
| Type | 3-in-1 Smart Sauna |
| Seats | 2 |
| Heat | Full-Spectrum |
| Power | 120V Plug-In |
| Materials | Full-spectrum, 120V plug-in |
| List price | By quote |
| Where to buy | Sunlighten |
| Price recorded | Oct 12, 2026 |
How it compares
We'd weigh the mPulse Believe against these 4 models from our catalogue.
- Sunlighten mPulse Conquer
By quote
Sunlighten's mPulse Conquer seats three and carries 20 heaters and LED panels to the Believe's 15. It needs a dedicated 240V/20A circuit, and Outliyr listed it about $1,400 above the Believe.
- Sunlighten Amplify RED II
$7,699
On sale for $7,499 until Oct 31Sunlighten's Amplify RED II costs $7,699 and sets four red and near-infrared LED panels among its far-infrared and full-spectrum heaters. It seats two like the Believe, though it plugs into 240V and Sunlighten publishes no strength for its LEDs.
- Sunlighten Amplify II
from $5,799
The Amplify II is the cheapest way into Sunlighten's full-spectrum heat at $5,799 in basswood. It stays on a 120V/20A outlet and drops the red light panels.
- Clearlight Sanctuary 2 Full Spectrum Infrared Sauna
from $7,399
Clearlight's Sanctuary 2 seats two from $7,399 and adds an under-floor foot heater. It draws 2,260W on a dedicated 120V/20A circuit, and Clearlight backs it with a lifetime residential warranty.
| Product | |  |  |  |  |
|---|---|---|---|---|---|
| Price | By quote | By quote | $7,699On sale for $7,499 until Oct 31 | from $5,799 | from $7,399 |
| Seats | 2 | 3 | 2 | 2 | 2 |
| Heat | Full-Spectrum | Full-Spectrum | Full-Spectrum | Full-Spectrum | Full-Spectrum |
| Power | 120V Plug-In | 240V Plug-In | 240V Plug-In | 120V Plug-In | 120V Plug-In |
| Material | n/a | n/a | n/a | Basswood | Basswood |
| Our rating | 4.4 / 5 | 4.4 / 5 | n/a | n/a | n/a |
| Links | Buy | See it | See it | See it | See it |
Before you buy
- How much does the Sunlighten mPulse Believe cost?
- Sunlighten sells the mPulse Believe by quote and doesn't post a price. When we checked in October 2026, the affiliate store Outliyr listed the two-person Believe at $8,699 against $9,399. Sunlighten's far-infrared Signature II, also a two-seater, sold for $5,499 on Sunlighten's own shop.
- Does the mPulse Believe need 240V?
- No. Sunlighten's spec sheet puts the mPulse Believe on a dedicated 120V/20A circuit with a NEMA 5-20 outlet, and the cabin draws 2,400W. Plug it straight into the wall, since Sunlighten rules out power strips and extension cords. The three-person Conquer and every larger mPulse need 240V.
- How big is the Sunlighten mPulse Believe?
- The mPulse Believe measures 51.7 inches wide by 47.6 deep and stands 79 inches tall on its 2-inch feet, by Sunlighten's spec sheet. Its bench is 45.9 inches wide. Sunlighten asks for 4 inches of clearance at the walls and 6 inches above the roof, and the cabin weighs 494 lbs in basswood or 551 lbs in eucalyptus.
- What's the difference between the mPulse Believe and the Conquer?
- The mPulse Believe seats two on a dedicated 120V/20A circuit, and the Conquer seats three and needs 240V/20A. Sunlighten fits the Believe with 15 heaters and LED panels and gives the Conquer 20. Outliyr listed the Conquer about $1,400 above the Believe when we checked.
Sunlighten 3-in-1 Smart Sauna
Buy the Sunlighten mPulse Believe
By quote
Buy at SunlightenWe may earn a commission when you buy through this link, and you pay the same price.
Where we’ve written about it
Infrared Saunas
Sunlighten mPulse review: are the Conquer and the Believe worth the premium?
Sunlighten's flagship line doses each infrared wavelength separately, on programs the company says it built from 37 clinical studies. We read the science behind that claim and say which size to buy.
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How to read infrared sauna specs, from low-EMF to chromotherapy
An infrared spec sheet mixes the specs that matter, such as panel coverage and verified EMF numbers, with decoration like mood lighting rebranded as therapy. We translate the typical page.
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Infrared Saunas
Sunlighten mPulse pricing: what to know before you ask for a quote
Sunlighten publishes no mPulse prices, so every buyer starts with a quote. We read the spec sheets for all five sizes and set the only affiliate listing we found beside the prices Sunlighten posts for its Amplify and Signature cabins.
5 min read
