The best outdoor infrared saunas, compared on every published spec

They share the word 'sauna' and almost nothing else. A traditional outdoor sauna — a barrel or a cabin with an electric or wood heater and stones — heats the air to 150-195°F and makes steam when you throw water. An outdoor infrared cabin skips the hot air and warms your body directly at a much lower air temperature, with no stones and no steam. The practical consequence is electrical: the Albott infrared cabin here draws about 11.9A at 240V, while a 6kW traditional outdoor heater draws 25A and wants a 35A dedicated circuit. Infrared is the lighter load — but it is a different experience, not a cheaper version of a steam sauna.

It depends on the cabin, and most listings will not tell you outright. Larger outdoor infrared cabins commonly run on 240V and draw enough to want their own circuit; the Albott here is the honest example, publishing 2850W / 240V / 20A. Several of the others publish a wattage or an amperage but not a voltage, and two publish neither — which is exactly why the table says 'Not published' rather than guessing. Where a listing gives us wattage and voltage we compute the draw and the breaker the code requires; where it does not, confirm the circuit with the seller before you commit to a spot in the yard.

Only if it is built for it, which is the whole point of buying an outdoor-rated cabin rather than moving an indoor one outside. The cabins here add weatherproofing an indoor unit does not have — the Albott, for instance, publishes an asphalt-shingle roof. Even so, an outdoor cabin in a cold climate takes longer to warm and asks more of its heater, because it is fighting the ambient temperature the entire session. That is one reason outdoor infrared draws more power than an indoor cabin of the same size, and it is worth reading our guide on running an outdoor sauna in winter before you site one where it snows.

A little, and less than the marketing implies. Far infrared does the bulk of the heating in every cabin on the market; full-spectrum units (the LTCCDSS and SALUSHEAT here) add near- and mid-infrared emitters and usually a named red-light wavelength, and the KUNSANA uses ceramic emitters instead of carbon panels. These are real hardware differences and a legitimate preference. What they are not is a settled health advantage — the specific claims attached to particular wavelengths are the manufacturer's, and we do not repeat them as fact.

Less than a traditional sauna, more than an indoor infrared cabin. A ~2,400W outdoor cabin used four 40-minute sessions a week works out to roughly $4.19 a month at the US average rate of 18.83 cents/kWh, assuming the panels run about 80% of each session — a stated assumption, not a hidden one. Outdoor cabins draw more than the 1,240-1,500W indoor units because they are heating against the weather. Substitute your own utility rate on the cost-to-run page; the national average is wrong for almost everybody.

Take the seat counts as 'seated fairly close', not 'lying down'. The Albott and the LTCCDSS are the four-person cabins here, the SALUSHEAT seats three with reclining seats, and the OUTEXER and KUNSANA are two-person. Only the LTCCDSS publishes its exterior dimensions (73.1 x 48.7 x 83.5 in), so if the footprint on your deck is tight, that is the one you can plan around without asking the seller for a number the others leave off the listing.