The best infrared saunas, compared on every published spec

No — that is the whole practical case for infrared. Every indoor cabin here that publishes its electricals runs on 120V and draws roughly 10-13A, so it plugs into an ordinary household outlet. Compare that with a traditional 6kW electric heater, which draws 25A at 240V and wants a 35A dedicated circuit and an electrician. The one caveat is the 1,500W unit: at 12.5A it sits close to a 15A outlet's continuous-load limit, so it is happiest on its own 20A receptacle.

No. They share a name and almost nothing else. A traditional sauna heats the air and stones to 150-195°F and makes steam when you throw water; an infrared cabin skips the hot air and warms your body directly at around 110-135°F, with no stones and no steam. The Finnish health research everyone cites was done on traditional saunas, so it does not automatically transfer to infrared. If you want the ritual of steam and löyly, infrared is not a cheaper version of it — it is a different machine.

Full-spectrum cabins add near- and mid-infrared emitters (often marketed alongside red-light wavelengths) on top of the far-infrared panels that do the bulk of the heating. Three of the cabins here are full-spectrum; the two carbon-panel units are far-infrared only. The heating experience is broadly similar; the extra emitters are the main thing you are paying more for, and the health claims attached to specific wavelengths are the manufacturer's, not ours.

Very little. A ~1,300W cabin used four 40-minute sessions a week works out to roughly $2.27 a month at the US average rate of 18.83 cents/kWh, assuming the panels are energised about 80% of the session. That is a stated assumption, not a hidden one — substitute your own utility rate on the cost-to-run page, because the national average is wrong for almost everybody.

Not published by these manufacturers in a way we can verify, and we have not measured it, so we are not going to print a number. Infrared warms you rather than the room, so it is often usable sooner than a traditional sauna even before the cabin air is fully warm — but heat-up time depends on wattage and cabin size, which is exactly why the wattage column is the one we chase hardest here.

The EASYHAWK and the Dynamic Saunas Cordoba are the two-person cabins here; the Real Relax, Albott and ENSTVER are single-person. 'Two person' in this category usually means two people seated fairly close, not two people lying down, so check the seat width against the published dimensions where a listing states them — only the Real Relax does.