Heavenly Heat sauna review: the 1, 2 and 3-person far infrared models, compared on price and specs

Heavenly Heat's menu also lists a BOX model, an ECO far infrared, two- and four-person cabins with red light and near infrared, combination cabins with a traditional heater, an outdoor combination and a traditional sauna. Those aren't in our database yet, so this review covers the three far-infrared cabins only. The brand says the 1-Person has 31% more interior volume than the ECO.

All three cabins in our database heat with far-infrared carbon panels and nothing else. The brand doesn't give the panel count or wattage for the 1- and 2-Person; for the 3-Person it gives 3,145 W. If you want near and mid infrared as well, that's a full-spectrum cabin; the difference is explained on full-spectrum saunas, and Heavenly Heat's own red light and near-infrared models are the ones to ask about.

None of the three product pages states a maximum temperature. The brand's guidance is to get in when the cabin reaches 90–110°F and let it keep heating.

Heavenly Heat says every cabin is "non-resinous 100% Canadian hemlock wood (no plywood)", built with "zero-glue construction" and no chemical stains. Those are the brand's claims, which I can't check from the outside. Smaller details on the pages: 8 mm tempered glass, wooden covers over the Bluetooth speakers instead of plastic, and glass covers on the light strips. The brand says most buyers assemble a cabin in 1–2 hours with basic tools; the assembly manuals are linked from each product page.

The 1-Person and 2-Person are listed as compatible with a standard 120 V household outlet (NEMA 5-15), with a 120 V 20 A circuit "recommended for best performance". That's rare at this size: every Sunlighten cabin and every Sun Home cabin needs at least a 20 A circuit.

The 3-Person draws 3,145 W and needs a dedicated 240 V circuit, installed by a licensed electrician; Heavenly Heat tells you to plan for the electrician and a look at your breaker panel before ordering. Note the warranty condition: "Failure to provide the correct voltage, circuit protection, or electrical configuration ... will void warranty coverage."

Each product page says: "In our testing, EMF levels are below 2 mg and ELF below 7 v/m," with grounded heaters and Faraday shielding. That's the brand's own test, with no distance and no report to read, so it can't be compared with figures measured at a stated distance. I haven't found an independent measurement of these cabins.

Warranty. The limited warranty runs 10 years from purchase for indoor saunas, covering the cabin, heaters, controls, power supply and wiring, and 5 years for red light panels and accessories; outdoor saunas get 3. It covers the original buyer only. Parts are repaired or replaced, labor isn't covered, and the total of all remedies is capped at the purchase price. Two clauses matter if you're buying used: the warranty isn't transferable, and saunas sold before the company's current ownership ("Legacy Units") aren't covered at all.

Returns. The refund policy calls the first 30 days an "in-home trial". To return, you take the sauna apart, repack it in its original packaging and pallet, and pay return freight, which Heavenly Heat says typically runs $750–$1,500. The same policy lists "assembled or installed saunas" and "products that show signs of use" as not eligible for return, which sits awkwardly next to the word trial. Ask how the brand applies that before you order. Canceling before shipment can cost up to 4.5% in payment fees and up to $750 in administrative costs.

Heavenly Heat has the longest fixed warranty of the three and the simplest wiring, and its price isn't tied to a sale. Clearlight has a lifetime warranty and also plugs into a standard outlet, at a sale price for now. Sun Home's Equinox adds full spectrum. None of the three takes a sauna back cheaply.