Best Indoor Saunas of 2026: Infrared, Traditional and Combo Picks

We sell 13 ready-made indoor saunas plus wood packages for building your own room. This guide sorts them by what matters indoors: power, size, heat type and installation. Prices, specifications and delivery terms are from our store as of October 1, 2026, and the installation requirements come from the manufacturers' manuals, listed at the end. Shopping for the backyard instead? See the best outdoor saunas.

Our picks at a glance

Element prices include a heater. Delivery is free on the Finnmark and Canadian Timber saunas; the rest are covered below.

Infrared or traditional indoors?

This is the first choice, because it decides your wiring. Infrared saunas warm you with infrared panels, run cooler and need no stones or water. Finnmark's reach 170°F. A traditional sauna heats the air with an electric heater and stones, so you can ladle water for steam. Kohler's indoor saunas run at 158 to 176°F. Most traditional heaters need a 240V circuit put in by an electrician, while most of the infrared saunas we sell plug into a regular outlet. Our guide to infrared vs. traditional saunas goes deeper on heat, power and running cost.

Best plug-in infrared saunas: Finnmark FD-1, FD-2 and FD-3

Finnmark's full-spectrum infrared cabins are the easiest indoor saunas to own. There is no heater to choose, delivery is free, and the one- and two-person models plug into a standard household outlet. The outside is Thermo-Aspen and the inside Western Canadian cedar.

The FD-2 is our pick for most people: room for two and no electrician needed, as long as the sauna has its own outlet. Finnmark's manual warns against overloading outlets and extension cords. The FD-3 plugs in too, but into a 240V outlet that most homes don't have, so plan on a licensed electrician.

Best combination sauna: Finnmark FD-4 Trinity

The Trinity is an infrared sauna with a real sauna heater inside, so you can choose gentle infrared heat or a hot, steamy traditional session in the same room. The FD-4 seats two and comes with a Harvia Vega Compact 1.9 kW heater. Finnmark rates it at 170°F on infrared and 190°F traditional.

• FD-4 Trinity, $7,795: 2 people, 48 x 48 in, 83 in tall. Everything runs on 120V, but on two circuits: a 15 A circuit for the infrared side and a 20 A, 120V circuit for the heater, which Finnmark says needs an electrician.
• FD-5 Trinity XL, $8,995: 3 to 4 people, 75 x 64 in. The infrared side plugs into a 240V outlet, and the included Harvia KIP45B 4.5 kW heater is wired separately on 240V.

Best traditional indoor saunas

SaunaLife X2: lowest-priced traditional cabin

At $6,789.75, the X2 is a prefabricated cabin of Nordic spruce walls with aspen benches, about 5 by 5 feet and 6 feet 8 inches tall, for up to two people. SaunaLife says two people can put it together in 4 to 6 hours. The heater, stones and accessories are sold separately, and delivery is $950. Call us and we'll match a heater to it.

Canadian Timber Element Nook, Loft and Studio: best traditional saunas for most homes

The Element series is built for indoors only and runs on an electric heater. Each one has 10 mm glass, comes with a choice of heaters sized to the room, and ships free. The sauna carries a 5-year warranty and the heater 3 years.

Each model can also be ordered without a heater, starting at $8,465.50 for the Nook. Canadian Timber requires a licensed electrician to make the final electrical connection, or the warranty is void.

Kohler C1: best if you want it installed

Kohler's C1 indoor sauna comes in 2-, 3- and 5-person sizes, in Scandinavian spruce (from $15,412.50) or graphite grey (from $17,156.25). The electric heater is included and runs on 240V. It is the only indoor sauna we sell with professional installation as an option, for $2,250 more, and you can order it with or without a floor. Delivery is $950 for the 2- and 3-person sizes and $1,990 for the 5-person size.

ThermaSol Astra, Aalto and Lumaria: best luxury cabins

ThermaSol's glass-fronted cabins come with a Harvia Virta 9 kW heater and a Harvia Xenio Wi-Fi control. The Astra ($23,604) and Aalto ($23,455) seat three to four behind semi-panoramic glass. The Lumaria seats up to five behind floor-to-ceiling glass on the front and side, from $21,276 in the medium size to $23,648 for the large.

Building your own indoor sauna room

If you have a spare room, basement corner or closet you want to turn into a sauna, a wood package may fit better than a cabin. Our Hotass Saunas packages include the thermally treated Western Red Cedar for four walls and the ceiling, two tiers of benches, a backrest, trim, duckboard flooring, a heater guard and the hardware. They come in ten sizes between 5 and 8 feet on a side, priced from $7,700 to $12,500. The largest sizes need some boards cut to length. The heater, door and vents are separate. Our DIY sauna guide walks through the full build with a real parts list.

What you need before an indoor sauna arrives

The manufacturers' installation manuals agree on most of this:

• A level, moisture-safe floor. Kohler recommends concrete, brick, tile or hardwood and says not to use carpet, which can hold moisture. ThermaSol prefers a stone or tile floor.
• Enough ceiling height. Kohler and ThermaSol both require at least an 8-foot ceiling in the room. Finnmark asks for at least 3 inches of clearance above and around its cabins.
• Space from the walls. Kohler, ThermaSol and SaunaLife all call for at least 2 inches between the sauna and the room's walls.
• Ventilation, and sometimes a drain. ThermaSol's cabins need a vent ducted to the outside. SaunaLife asks for a well-ventilated room with a water drain on or near the spot.
• The right power. Check the table above. A plug-in sauna needs its own outlet of the right type. A hardwired heater needs a licensed electrician.
• Two people for assembly. Kohler, SaunaLife and Finnmark all say installation takes at least two people, and ThermaSol says two to four.

What an indoor sauna costs to run

The 120V infrared saunas use 1,450 to 1,750 watts, and the FD-3 uses 3,150. The traditional heaters in these rooms run from 1.9 kW in the Trinity to 9 kW in the ThermaSol cabins. For the full cost per session at U.S. electricity rates, and everything else that goes into the price, see how much a home sauna costs.

Browse every indoor sauna and infrared sauna, or call us with your room size and outlet and we'll tell you which models fit.