SIDE BY SIDE

Compare products.

See prices, running costs, specifications and trade-offs side by side. Choose two to four products of the same type.

Change products

Product 1Product 2Product 3 (optional)Product 4 (optional)

Installed infrared cabin

Sunlighten Amplify III

3-person installed infrared cabin, eucalyptus/obsidian

$6,999US price, checked Oct 13, 2026

Three-person cabin with ten heaters on a dedicated 120 V circuit

Check price at Sunlighten Full review →

Installed infrared cabin

Clearlight Sanctuary 1

1-person indoor full-spectrum infrared cabin, mahogany (basswood also offered), 120V/15A plug-in

Price on requestNo published price, checked Oct 13, 2026

One-person full-spectrum cabin that plugs into a standard 120V outlet

Check price at Clearlight Full review →

Criterion	Sunlighten Amplify III	Clearlight Sanctuary 1
US price	$6,999Checked Oct 13, 2026 · Price details in the review	Price on requestChecked Oct 13, 2026 · Price details in the review
Three-year ownership estimate	$6,999 Incomplete known subtotal. Not included: installation, energy use.	Not enough data Incomplete known subtotal. Not included: purchase price, installation, other annual costs, energy use.
Choose if	Two or three people who share sessions, with a dedicated 120 V, 20 A circuit and about 63 × 46 in of indoor floor.	A solo user with about 42.5 × 48.25 in of floor space who wants full-spectrum heaters running off a standard 120V, 15A outlet.
Main trade-off	Opened saunas can't be returned, and the product page skips wattage, top temperature and a safety listing number.	There's no published price, labor is covered for 7 years rather than for life, and the 14.6A draw leaves little headroom on a 15A circuit.
Key specifications	Heaters: 7 SoloCarbon far-infrared heaters and 3 halogen full-spectrum heaters. Wattage of each isn't stated Electrical: 120 V on a dedicated 20 A circuit and outlet. Wattage, amperage and outlet type aren't on the product page Inside and seating: 56.8 W × 39.9 D × 70.3 H in. One bench, 56.7 W × 20.3 D in and 19.5 in high, for up to three people Weight: 642 lb Delivery and assembly: Freight to a flat, paved surface at your garage door, left on a pallet. Two people assemble it in about 2 to 3 hours Heat-up: Sunlighten suggests preheating for 45 to 60 minutes and says it warms about one degree per minute Options: Eucalyptus or Obsidian at the same price, basswood $200 less. The 2-person size costs $1,000 less. Integrated red light was marked not available Extras: Bluetooth sound system, chromotherapy lights and a CELLIANT heater cover	Heaters: Two 500 W True Wave full-spectrum heaters on the front wall. True Wave far-infrared heaters on the back wall, side walls, behind the calves and under the floor (count and wattage not stated) Electrical: 120 V, 1,740 W, 14.6 A. Plugs into a 120 V, 15 A outlet with a NEMA 5-15P plug Capacity: Built for 1 adult Weight: 425 lb Operating temperature: 115–125°F, per Clearlight's FAQ, which says cabins typically reach that range even when set to 150°F. Another FAQ answer says 115–130°F. Neither figure is given for this cabin specifically Controls and extras: Digital keypad (temperature, time, lights, heater intensity, reservation mode), smartphone control, Bluetooth/AUX audio and charging station, 12-color chromotherapy. Red light therapy upgrade available EMF: Marketed as low EMF/ELF. The product page says the heaters "cancel out both EMF and ELF." Clearlight's FAQ says True Wave heaters measure less than 1 mG when tested directly on the heater. No test standard, lab or report is named.
Exact variant	3-person installed infrared cabin, eucalyptus/obsidian	1-person indoor full-spectrum infrared cabin, mahogany (basswood also offered), 120V/15A plug-in
Dimensions	Outside: 62.3 W × 45.9 D × 77.7 H in, including 2 in feet. Inside: 56.8 W × 39.9 D × 70.3 H in. The door opening is 28 in. The bench is 56.7 in wide and 20.3 in deep, 19.5 in off the floor. It weighs 642 lb. Sunlighten says it fits under a standard 8 ft ceiling and its panels fit through a standard 30 in doorway. The product page gives no clearance to leave around the cabin.	Exterior 42.5 W × 48.25 D × 77 H in. Interior 37.5 W × 45.5 D × 72.5 H in. Bench 35.5 W × 21.75 D × 19 H in. It weighs 425 lb. If you build it into an enclosed space, Clearlight recommends leaving 4 in around the sauna.
Installation	It needs a dedicated 120 V, 20 A circuit and outlet. Sunlighten's FAQ says a power strip or converter voids the warranty. The warranty page also rules out extension cords and shared circuits. It asks for at least 5 ft between the sauna and a cold plunge, shower or bathtub. The product page suggests booking an electrician so the outlet is ready on build day. It doesn't list the wattage, amperage or outlet type. Freight delivery needs a flat, paved surface up to your garage door. The carrier leaves the sauna there on a pallet and can't carry it up steps. It comes in two to three mattress-sized boxes of 130 lb each. The Magne-Seal panels lock together without screws or nails. Sunlighten says two people take about 2 to 3 hours.	It plugs into a standard 120 V, 15 A household outlet with a NEMA 5-15P plug. The product page doesn't say it needs a dedicated circuit. Shipping is advertised as free. The sauna arrives by freight with lift-gate service at a scheduled delivery appointment, and someone 18 or older must sign for it. Clearlight says two people usually assemble it in about 1 to 1.5 hours with a screwdriver and the included Allen wrench. Its FAQ says 1 to 3 hours. Clearlight offers installation service in some areas but doesn't state a price.
Materials	It's eucalyptus in Sunlighten's black Obsidian finish. Plain eucalyptus costs the same, and basswood is $200 less. It comes with a CELLIANT heater cover. Sunlighten says its eucalyptus is sustainably sourced. It also says the glue on the tongue-and-groove boards is non-toxic and was third-party tested by Franklin International.	Mahogany or basswood. Clearlight calls it furniture-grade natural wood and notes that grain and color vary from cabin to cabin.
Warranty	Sunlighten's warranty page groups Amplify with its other cabin saunas. For home use, the cabinet and heaters get 7 years, the controls 3 years, and the glass door and audio 1 year. Commercial use gets 5 years on the cabinet and heaters and 1 year on everything else. You pay the freight on parts shipped for service. A general disclaimer says coverage is for replacement parts only, not labor or technician costs. It sits right after the red light panel's terms, so it's unclear whether it applies to cabins. The warranty covers only the original buyer and ends if you sell the sauna. It's void on a power strip, extension cord, converter or shared circuit, or within 5 ft of water. Sunlighten says its saunas aren't designed to be placed outdoors. If you put one outside anyway, its cover (sold separately) has to stay on at all times, even during sessions. The sauna must also be bought and put into use within a year of its manufacture date. The page shows no version or effective date.	Clearlight says its residential Limited Lifetime Warranty covers the entire sauna for as long as you own it. That means the heaters, control panels and electrical components, wood cabin, audio and chromotherapy lighting. Parts and shipping are covered for life, but labor isn't. The warranty page says labor is covered for an initial period without giving its length. The Sanctuary owner's manual, which lists Sanctuary 1, sets labor at 7 years for indoor home use in the US and Canada. The manual counts coverage from the purchase date. It also says the warranty can't be transferred without written consent from Sauna Works, which issues it. Commercial use falls under a 5-year warranty. The warranty page says registration is automatic when the sauna ships. The manual instead asks you to register within 30 days of purchase.
Returns	Non-custom saunas like Amplify can be returned or exchanged within 30 days of delivery, but only in the original, unopened packaging. Opened saunas can't be returned or exchanged. Charges can include a 3% administrative fee, a $499 restocking fee, storage fees and return shipping to the warehouse. Cancelling before it ships can cost the 3% fee, plus storage fees if the sauna has to be re-routed. Sunlighten reserves the right to refuse a return, exchange or cancellation. It refunds to your original payment method after it inspects and restocks the sauna.	Clearlight calls it a "30 Day Risk-Free Return Policy," but a return isn't free. You have 30 business days from receipt and need a return authorization (RMA). The sauna must be in new or like-new condition, with undamaged original packaging and all manuals. Clearlight deducts a 25% restocking charge and the original shipping charges. If the sauna shipped under a free or discounted shipping promotion, that means the actual freight cost. You also pay return shipping. Custom, private-label and non-standard models are non-refundable. Orders canceled before shipment are fully refunded. Concealed damage must be reported within 5 business days of delivery.
Unresolved questions	The cabin's rated wattage and amperage, and so its running cost The maximum cabin temperature Which outlet type it needs and whether GFCI protection is required How much clearance to leave around the cabin Whether the warranty's no-labor line covers cabin saunas or only the red light panel What the owner's manual and power box installation guide require, since those PDFs couldn't be opened Whether an ETL listing covers this exact model, and its file number What the linked EMF test measured, on which models and at what distance Carton weights, since two to three boxes of 130 lb each don't add up to 642 lb Whether the $6,999 sale price outlasts the October 14 event	The current quoted price, and whether the Save $600 promotion applies Whether the owner's manual or spec sheet recommends a dedicated circuit (the linked spec sheet couldn't be opened) Whether the red light therapy upgrade needs a bigger circuit. Clearlight's FAQ says add-ons may require a circuit upgrade, typically from 15 A to 20 A or from 20 A to 30 A, but doesn't name models Whether the manual's 7-year labor term is current, since the warranty page gives no length Number and wattage of the far-infrared heaters Which models and components the claimed ETL and CE certification covers Delivery timeline

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.