Best infrared saunas

EMF: what brands claim and how to read it

Almost every infrared sauna is sold as "low EMF". The claims aren't comparable, because a magnetic field reading falls off quickly with distance and most brands don't say where they measured.

Of the 15 cabins with a figure and a distance, 12 come from Golden Designs and its Dynamic and Maxxus lines, which quote a range per heater type: "5–10 mG at 2–3 in" for standard carbon panels and "less than 3 mG at 2–3 in" for PureTech. Their own FAQ words it differently from the model pages, so read those numbers as the brand's. Health Mate is the only brand here that links the lab report itself.

JNH lists an average of 0.32 mG "from the center of the heater" and says Intertek and Vitatech measured it, but the reports aren't on the page. None of these figures has been checked by anyone independent that I could find, and this page doesn't say anything about what EMF does or doesn't do to health: I haven't found research on infrared cabins specifically.

Wiring: plug-in or electrician?

The pattern is predictable: one- and two-seat cabins on a regular outlet draw 1,350–1,780 W where the brand lists wattage, while three- and four-seat cabins mostly need more than a 15 A circuit can give. The exceptions matter if you rent or don't want to open a wall: Maxxus 4 Person Hemlock and Dynamic Saunas Lugano 3 Person Elite seat four and three on 120 V / 20 A, and Golden Designs Reserve Edition 4 Person Full Spectrum needs two separate 15 A outlets rather than 240 V.

"Dedicated outlet recommended" shows up on most spec sheets, even the plug-in models. If anything else shares the circuit, the breaker may trip. Check with a licensed electrician before you order, especially for anything marked 20 A or 240 V.

Far infrared vs full spectrum

31 cabins here list far-infrared carbon heaters only. The rest add "near" or "mid" infrared elements and call it full spectrum, or add red light. What brands mean by that varies: Clearlight adds 500 W full-spectrum heaters on the front wall, Golden Designs mixes near-infrared elements into its carbon panels, Sunlighten runs the ranges separately. Few publish wavelengths.

No study I found compares full spectrum against far infrared on any health measure, so the useful differences are price, heat and wiring. The breakdown by brand is on our full-spectrum page.

Warranty and returns: the fine print

"Lifetime" means different things. Clearlight and Health Mate put lifetime terms on the heaters or the whole cabin for residential use. Golden Designs, which makes Dynamic and Maxxus, calls its warranty "limited lifetime" and then, in a footnote, gives heaters and electronics 5 years and the wood structure 1 year; installing an indoor cabin outside voids it. Maxxus pages link the same warranty page written for Dynamic.

Returns are where infrared saunas get expensive. 38 models charge a percentage restocking fee of 15–30%, and 9 Sunlighten models charge a flat $499 plus 3%. Almost all add return freight on top: Golden Designs also charges storage (returns page), Clearlight takes 25% and both legs of shipping (policy), and Sunlighten won't take back an opened Signature I. On the $5,300 Enrich 2, Health Mate's 20% fee alone comes to $1,060.

That makes the measuring tape the most useful tool before you order. Exterior and interior dimensions for every model are in the table above.

Is the Costco infrared sauna good?

Costco sells Dynamic cabins made by Golden Designs. On Oct 8, 2026 its listings showed these prices, all marked out of stock:

• Dynamic Saunas Barcelona 1–2 Person: $1,699.99 at Costco (item 330719) against $3,499 on the brand's site, Costco listing.
• Dynamic Saunas Santiago 2 Person Full Spectrum: $2,699.99 at Costco (item 1916739) against $5,999 on the brand's site.
• Dynamic Saunas Lugano 3 Person Elite: $2,799.99 at Costco (item 1948823) against $6,999 on the brand's site.

The cabins are the same models, with the same 120 V / 15 A plug on the one- and two-seat versions and the same EMF claims, so the spec sheets above apply. What changes is who handles a return: Costco's own policy instead of Golden Designs' 20% fee. If Costco has one in stock, that difference alone can be worth more than any feature.