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Installed infrared cabin

Clearlight Sanctuary 2

2-person full-spectrum infrared cabin, mahogany (basswood also offered), 120V / 20A plug-in

Price on requestNo published price, checked Oct 13, 2026

Two-person full-spectrum cabin with a lifetime warranty, sold by quote

Check price at Clearlight Full review →

Installed infrared cabin

Sunlighten Amplify II

2-person installed infrared cabin, black Obsidian exterior with eucalyptus interior, no red-light option

$5,999US price, checked Oct 13, 2026

Two-person cabin with eight heaters on a dedicated 120 V circuit

Check price at Sunlighten Full review →

Criterion	Clearlight Sanctuary 2	Sunlighten Amplify II
US price	Price on requestChecked Oct 13, 2026 · Price details in the review	$5,999Checked Oct 13, 2026 · Price details in the review
Three-year ownership estimate	Not enough data Incomplete known subtotal. Not included: purchase price, installation, other annual costs, energy use.	$5,999 Incomplete known subtotal. Not included: installation, energy use.
Choose if	Two adults with a 20 A outlet and about 60 × 56 in of floor space who'd rather have long warranty coverage than a published price.	Two people with a dedicated 120 V, 20 A circuit, about 51 × 46 in of indoor floor and a paved path for freight.
Main trade-off	You can't compare its cost upfront with listed-price cabins like the Sunlighten Amplify II, labor coverage ends after 7 years indoors, and a return costs 25% plus freight and the original shipping charge.	Opened saunas can't be returned, warranty labor is on you, and the panel magnets can affect pacemakers.
Key specifications	Heaters: Two 500 W True Wave full-spectrum heaters on the front wall. True Wave far-infrared heaters on the back and side walls, behind the calves and under the floor (count and wattage not stated) Electrical: 120 V, 2,260 W, 18.83 A. NEMA 5-20P plug for a 120 V, 20 A outlet Capacity and bench: Up to 2 adults. Bench is 44.5 W × 21.75 D × 19 H in Weight: 450 lb Maximum temperature: Programmable to a maximum of 175°F (80°C). The session timer goes up to 60 minutes, but the manual recommends starting with sessions of no more than 30 minutes Controls and extras: Digital keypad for temperature, time, lights, heater intensity and reservation mode. Also a smartphone/tablet app, Bluetooth and AUX audio, and 12-color chromotherapy Assembly: Two adults, about 1 to 1.5 hours with a screwdriver and the included Allen wrench, per Clearlight's general assembly page	Heaters: 5 SoloCarbon far-infrared heaters and 3 halogen full-spectrum heaters. Wattage of each isn't stated Electrical: 120 V, 1,880 W, 15.67 A. Dedicated 120 V, 20 A circuit with a NEMA 5-20R outlet Inside and seating: 45.4 W × 39.9 D × 70.3 H in. One bench, 45.2 W × 20.3 D in and 19.5 in high, for one or two people Weight: 541 lb Delivery and assembly: Freight on a pallet to your garage or a flat, paved spot on the driveway. Two people assemble it in about 2 to 3 hours Options: Eucalyptus or Obsidian at the same price, basswood $200 less. Integrated red light isn't available. The 3-person size costs $1,000 more Extras: Bluetooth sound system, chromotherapy lights and controls that let you lower the temperature Warranty (home use): 7 years on cabinet and heaters, 3 years on controls, 1 year on glass door and audio. Labor not covered
Exact variant	2-person full-spectrum infrared cabin, mahogany (basswood also offered), 120V / 20A plug-in	2-person installed infrared cabin, black Obsidian exterior with eucalyptus interior, no red-light option
Dimensions	Outside: 51.75 W × 47.75 D × 77 H in (listed as 51 3/4″ × 47 3/4″ × 77″). Inside: 46.5 W × 44.25 D × 72.5 H in. It weighs 450 lb. The owner's manual asks for at least 4 in of clearance on all sides for air circulation. The product page recommends 4 in around the sauna if it's built into an enclosed space.	Outside: 50.9 W × 45.9 D × 77.7 H in, including 2 in feet. Inside: 45.4 W × 39.9 D × 70.3 H in. The door opening is 28 in. The bench is 45.2 in wide and 20.3 in deep, 19.5 in off the floor. It weighs 541 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.
Installation	It plugs straight into a 120 V, 20 A wall receptacle with a NEMA 5-20P plug. It's rated at 18.83 A, close to the circuit's 20 A rating. Clearlight doesn't say you need a dedicated circuit or an electrician. The manual calls for a properly grounded 3-wire socket and advises against extension cords. It strongly recommends a GFCI in potentially wet locations, and asks for a dry, level surface with at least 4 in of clearance. The sauna ships by liftgate freight, with a scheduled delivery appointment. Clearlight's general assembly page says two people usually assemble it in about 1 to 1.5 hours, using a screwdriver and the included Allen wrench. Installation service is available in some areas, at no stated price. Outdoors, Clearlight requires its optional canvas cover, with the sauna on a deck or concrete pavers.	It needs a dedicated 120 V, 20 A circuit with a NEMA 5-20R outlet. Sunlighten rates it at 1,880 W and 15.67 A. The product page tells you to book an electrician so the outlet is ready, but doesn't mention GFCI protection. Under Sunlighten's warranty, a power strip, extension cord, converter or non-dedicated circuit voids coverage. So does placing it within 5 ft of a shower, bathtub or cold plunge. Sunlighten says its saunas aren't designed to be placed outdoors. If you put one outside anyway, its separately sold cover and plastic sheet must stay on, even during sessions, or the warranty is void. Freight needs a flat, paved surface up to your garage door. The carrier leaves the sauna on a pallet in the garage or on the driveway and can't take it up steps. A local agent calls to schedule delivery. It ships in two to three boxes of 130 lb each, and Sunlighten says to have at least two people to unpack. The Magne-Seal panels lock together without screws or nails. Sunlighten says two people take about 2 to 3 hours. Its support page links an owner's manual, spec sheet, assembly guide and power box guide, but those PDFs couldn't be opened for this review.
Materials	Mahogany or basswood, which Clearlight describes as genuine, furniture-grade natural wood. It says the heaters combine ceramic and carbon.	The outside has a limited-edition black finish that Sunlighten calls Obsidian. The inside is natural eucalyptus, which Sunlighten says is sustainably sourced. Plain eucalyptus costs the same, and basswood is $200 less. It comes with a CELLIANT heater cover.
Warranty	Clearlight says its lifetime residential warranty covers the entire sauna for as long as you own it: the wood cabin, True Wave heaters, controls and electrical components, audio and chromotherapy lighting. Parts and shipping are covered for life. Labor is covered only for an initial period. The "Sauna Works Limited Lifetime Warranty" table in the owner's manual sets that at 7 years for indoor residential use (USA and Canada only). Outdoor residential use is covered only if you bought Clearlight's water-resistant cover with the sauna and kept it on. In that case, the manual limits cabin and labor coverage to 5 years. Commercial use carries a 5-year warranty. Clearlight's warranty page and manual differ on registration. The warranty page says it's automatic when the sauna ships. The manual says you must register within 30 days of purchase. The manual also says the warranty can't be transferred without Clearlight's written consent.	The product page shows a 7-year warranty badge. Sunlighten's warranty page groups Amplify with its other cabin saunas. For home use, the cabinet and heaters get 7 years. The cabinet includes the benches, floor grates and heater cover frames. The controls (in-sauna tablet, control pad and power box) get 3 years. The glass door and audio get 1 year, and chromotherapy lighting has its own 1-year term. Commercial use gets 5 years on the cabinet and heaters and 1 year on everything else. The warranty's disclaimers say labor and technician costs aren't covered. You pay all freight, including on parts shipped for service. Coverage is for the original buyer only and ends if you sell the sauna. It's void on a power strip, extension cord, converter or non-dedicated circuit, or within 5 ft of a shower, bathtub or cold plunge. Sunlighten says its saunas aren't designed for outdoor use. Outside, the separately sold cover and its plastic sheet must stay on at all times. The sauna must be bought and put into use within a year of its manufacture date.
Returns	Clearlight calls it a "30 Day Risk-Free Return Policy", but returns aren't free. They're accepted within 30 business days of receipt, and you need a Return Merchandise Authorization. The sauna has to be in new or like-new condition, in undamaged original packaging with all manuals. The refund is the purchase price minus any original shipping charges and a 25% restocking charge. If the sauna shipped under a free or discounted shipping promotion, the actual original freight cost is deducted. You pay return shipping. Custom, private-label and non-standard models are non-refundable. You must open the boxes and inspect them for concealed damage within 5 business days of delivery.	You have 30 days from delivery to start a return or exchange, and the sauna must be in its original, unopened packaging. Opened saunas can't be returned or exchanged. Returns, exchanges and cancellations may carry a 3% administrative fee and a $499 restocking fee for each Amplify sauna. Storage fees for re-routing the sauna and return shipping to the warehouse may also apply. Exchanges can add shipping back to you. If it hasn't shipped, you cancel by emailing your sales representative, or through Sunlighten's order portal if you don't have one. Refunds go to the original payment method once the sauna is received, inspected and restocked, with no stated timeframe. Sunlighten reserves the right to refuse a return, exchange or cancellation.
Unresolved questions	The quoted price Whether mahogany and basswood are priced differently Number and wattage of the far-infrared heaters Whether registration is automatic at shipment (warranty page) or due within 30 days of purchase (owner's manual) Measured EMF/ELF values Any safety-listing file number behind the Intertek and CE logos What the optional installation service costs and where it's offered	The maximum cabin temperature The wattage of each heater and average power use during a session Measured EMF or ELF values and how they were tested Whether an ETL or UL listing covers this exact model, and its file number How much clearance it needs and whether it needs GFCI protection Carton weights, since two to three boxes at 130 lb each don't add up to the 541 lb listed weight Whether the $5,999 sale price lasts past the October 14 sale

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.