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Installed infrared cabin

Sunlighten mPulse Aspire

1-person installed infrared cabin with red light, eucalyptus or basswood

Price on requestNo published price, checked Oct 20, 2026

One-person infrared cabin with red light that needs its own 20 A circuit

Get a quote at Sunlighten Full review →

Installed infrared cabin

Sunlighten Signature I

1-person installed far-infrared cabin, eucalyptus

$4,999US price, checked Oct 23, 2026

One-person far-infrared cabin that needs its own 120 V, 20 A circuit

Check price at Sunlighten Full review →

Criterion	Sunlighten mPulse Aspire	Sunlighten Signature I
US price	Price on requestChecked Oct 20, 2026 · Price details in the review	$4,999Checked Oct 23, 2026 · Price details in the review
Three-year ownership estimate	$319.30 Incomplete known subtotal. Electricity assumption: $0.18/kWh. Not included: purchase price, installation, other annual costs.	$5,371.52 Incomplete known subtotal. Electricity assumption: $0.18/kWh. Not included: installation, other annual costs.
Choose if	One person with a dedicated 120 V, 20 A circuit who wants red light and several infrared wavelengths in one cabin.	One person with a dedicated 120 V, 20 A circuit and about 38 × 40 in of floor plus 4 in or more around it.
Main trade-off	Sunlighten publishes no price, and you can't return the cabin once the boxes are opened.	You can't return it once the boxes are opened, and the warranty doesn't pay for labor.
Key specifications	Heaters: 5 far-infrared, 4 mid-infrared and 3 near-infrared and red LED panels. Sunlighten says its PulseIQ platform controls the four wavelengths separately. Per-heater wattage isn't stated Red and near-infrared light: Sunlighten says the LED panels peak at 650 nm (red) and 880 nm (near-infrared) and deliver 1 to 3 mW/cm² to the skin. It says that's lower than dedicated LED devices. No independent measurement is given Electrical: 120 V, 18 A, 2,160 W per the assembly guide. Dedicated 120 V, 20 A circuit with a NEMA 5-20 outlet. 10 ft cord. Dual-band Wi-Fi (2.4 and 5 GHz) Inside and seating: 37.8 W × 35.6 D × 71.5 H in. One bench, 37.8 W × 21.7 D in and 20.2 in off the floor, for one person Outside and weight: 43.6 W × 41.6 D × 79 H in with feet. 463 lb in eucalyptus, 432 lb in basswood. Leave 4 in to the walls and 6 in above Heat: Sunlighten says it warms about 1°F a minute and suggests 45 to 60 minutes of preheat. Its wellness programs aim for 120 to 130°F, and you can preheat to 130 to 140°F by hand. No top temperature is stated Controls: Built-in tablet and Sunlighten app to start, preheat (up to 60 minutes), schedule and adjust sessions. Six preset programs plus a custom one. Screen size isn't stated Delivery and assembly: Freight to a garage or flat, paved driveway, left on a pallet. Two cartons, 46 × 7 × 48 in and 47 × 17 × 76 in. Two people assemble it, about 1 to 2 hours per Sunlighten's FAQ Safety listing: Sunlighten says its saunas are ETL-certified. The spec sheet shows an ETL mark (US and Canada) beside RoHS, CE and TÜV logos, with no file number Running cost: Sunlighten's owner's manual estimates $0.20 to $0.50 an hour. The 2,160 W figure is the electrical rating, and Sunlighten gives no average power draw Extras: Chromotherapy lights with a remote, ceiling speakers, CELLIANT heater covers and a ceiling vent Cleaning: Wipe the bench and floor after each use, wipe all wood weekly with Sunlighten's natural cleaner and wipe heater surfaces monthly. Clear dust from the power box heat sinks twice a year	Heaters: 8 far-infrared heaters, with Sunlighten's SoloCarbon heater named as a feature. No near-infrared or full-spectrum heaters are listed, and per-heater wattage isn't stated Electrical: 120 V, 1,350 W, 20 A. Dedicated 120 V, 20 A circuit with a NEMA 5-20R outlet (5-20P plug) Inside and seating: 32.2 W × 33.6 D × 70.3 H in. One bench, 32.1 W × 20.2 D in and 19.5 in high, for one person Outside and weight: 37.8 W × 39.8 D × 77.7 H in with feet, 428 lb. Leave 4 in to the walls and 12 in above Heat: Up to 170°F on the product page. Sunlighten suggests preheating for 45 to 60 minutes and says it warms about 1°F per minute Delivery and assembly: Freight to a garage or flat, paved driveway, left on a pallet. Two people assemble it in about 2 to 3 hours Running cost: Sunlighten's product page estimates 15 to 35 cents an hour. Its owner's manual says $0.20 to $0.50 an hour Extras: Bluetooth sound system, chromotherapy lights, CELLIANT heater cover and a Reservation Mode that starts the preheat
Exact variant	1-person installed infrared cabin with red light, eucalyptus or basswood	1-person installed far-infrared cabin, eucalyptus
Dimensions	Outside: 43.6 W × 41.6 D × 79 H in, including 2 in feet. Inside: 37.8 W × 35.6 D × 71.5 H in. The bench is 37.8 in wide and 21.7 in deep, 20.2 in off the floor. It weighs 463 lb in eucalyptus and 432 lb in basswood. Sunlighten recommends 4 in to the walls and 6 in above the cabin. Sunlighten gives no minimum doorway width and asks you to measure doorways and hallways before you buy.	Outside: 37.8 W × 39.8 D × 77.7 H in, including 2 in feet. Inside: 32.2 W × 33.6 D × 70.3 H in. The door opening is 28 in, and the door swings outward to the right. Sunlighten's spec sheet recommends 4 in between the sauna and the walls and 12 in above it. The manual's FAQ asks for 8 to 12 in around the back and sides and at least 8 in behind so the electronics can cool, so leave the larger gap. The cabin fits under a standard 8 ft ceiling, and its panels fit through a standard 30 in doorway.
Installation	It needs a dedicated 120 V, 20 A circuit and outlet with a NEMA 5-20 plug. Sunlighten's assembly guide rates it at 120 V, 18 A and 2,160 W. The 10 ft cord exits at the back left of the floor and must plug straight into the wall. The assembly guide says to add a GFCI or dual-function breaker only if your local code requires one. The spec sheet says dual-band Wi-Fi (2.4 and 5 GHz) is required, while the product page says recommended. Freight goes to a garage or a flat, paved driveway, where the carrier leaves it on a pallet and can't carry it up steps. You need two people to unpack and assemble it, which Sunlighten's FAQ puts at 1 to 2 hours, and professional installation isn't required.	It needs a dedicated 120 V, 20 A circuit with a NEMA 5-20R outlet (5-20P plug). Plug it straight into the wall, not a power strip, extension cord or converter. Sunlighten's manual says a certified electrician should install the dedicated outlet, and that failing to do so voids the warranty. It also says to put a GFCI or dual-function breaker on the circuit, so check your local code. Freight goes to a garage or flat, paved driveway, where the carrier leaves a pallet and can't carry it up steps. It comes in two to three mattress-sized boxes of 130 lb each, and at least two people must carry in the panels. The Magne-Seal panels lock together without screws or nails, and Sunlighten says two people take about 2 to 3 hours.
Materials	Sunlighten says each sauna is built from sustainably sourced eucalyptus with natural variation in tone and grain. Its spec sheet also lists basswood. It lists kiln-dried wood, thick insulation, a glass front door and side glass, and CELLIANT fabric covers over the heaters on the interior walls. Its safety page calls the glue non-toxic, citing testing by Franklin International.	Eucalyptus, which Sunlighten says is sustainably sourced, with natural variation in tone and grain. Basswood was marked not available. Obsidian is offered on the same page at no extra cost. It comes with a CELLIANT heater cover. Sunlighten says the glue is non-toxic, citing third-party testing by Franklin International.
Warranty	Sunlighten's warranty page gives the cabinetry and heaters 7 years for home use, and one set of terms covers its mPulse, Signature and Amplify cabins. Coverage is for replacement parts only, with no labor or technician costs. You pay freight on parts shipped for service, and the page excludes costs or freight for parts shipped more than 90 days after delivery. Controls (tablet, control pad and power box) get 3 years, the glass door and audio get 1 year. Chromotherapy and the Blaupunkt sound system carry a separate 1-year manufacturer's warranty. Commercial use gets 5 years on the cabinetry and heaters and 1 year on controls, glass and audio. It covers only the original buyer and ends if you transfer ownership, and the sauna must be bought and put into use within a year of its manufacture date. It's void if the sauna is altered, misused or exposed to water. It's also void on a power strip, extension cord, converter or non-dedicated circuit. The same goes for a spot within 5 ft of a shower, tub or cold plunge, or a repair attempted without consulting Sunlighten. Sunlighten says its saunas aren't designed for outdoor use, and outdoors the separately sold cover must stay on at all times, even during sessions. The page doesn't say whether the red and near-infrared LED panels count as heaters.	Sunlighten's warranty covers replacement parts only, not labor or technician costs, and you pay all freight, including on parts shipped for service. For home use, the cabinet and heaters get 7 years. The cabinet includes the bench, floor grates and heater cover frames. Controls get 3 years, and the glass door and audio get 1 year. Commercial use gets 5 years on the cabinet and heaters and 1 year on everything else. Coverage is for the original buyer only and ends if you sell the sauna. The sauna must be bought and put into use within a year of its manufacture date. It's void on a power strip, extension cord, converter or non-dedicated circuit, within 5 ft of a shower, tub or cold plunge, or after unauthorized repairs. Sunlighten says its saunas aren't designed for outdoor use, and outdoors the separately sold cover has to stay on at all times.
Returns	You have 30 days from delivery to return it, but only while it's unopened in its original packaging. Opened saunas can't be returned or exchanged. Fees can include a 3% administrative fee and a $499 restocking fee for each mPulse sauna. They can also include storage fees, return shipping to the warehouse and shipping back to you on an exchange. To cancel before it ships, email your sales representative, and the same fees may apply. To return it, email your sales representative for an authorization, or Sunlighten's logistics team if you have none. Sunlighten then schedules the pickup and refunds your original payment method after it inspects and restocks the sauna. Sunlighten reserves the right to refuse a return, exchange or cancellation.	You have 30 days from delivery to start a return, but only while the sauna is unopened in its original packaging. Opened saunas can't be returned. Charges can include a 3% administrative fee, a $499 restocking fee for Signature saunas, storage fees and return shipping. You can cancel before it ships, but the same fees can apply. You start a return by emailing your sales rep or customer care for an authorization, and Sunlighten schedules the pickup. It refunds to your original payment method after it inspects and restocks the sauna, and it reserves the right to refuse a return, exchange or cancellation.
Unresolved questions	The price, and which models the Sale ends 10/31/26 footnote covers A ship date or lead time for the Aspire, since the shipping page says the estimated ship date varies by model Whether any EMF measurement covers the Aspire, since the Vitatech report tested other models and the safety page's 0.5 mG figure gives no model or distance The ETL file number and which models it covers A top cabin temperature Average power draw once the cabin is up to temperature The minimum doorway width its panels and cartons need Whether the 7-year heater warranty covers the red and near-infrared LED panels Whether your local code requires GFCI protection, and what an electrician would charge The tablet's screen size, and whether there's an automatic shut-off Whether the sauna works without Wi-Fi, since the spec sheet lists dual-band Wi-Fi as required and Sunlighten doesn't say	Whether an ETL listing covers Signature I, and its file number Average power draw once the cabin is up to temperature How many cleanings one $39 cleaning kit covers Whether the sale price continues after October 31, when Sunlighten's pages say the sauna sale ends

These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.