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Choosing a home infrared sauna: size, power and running costs
Work out which size fits your room and your electrics, see the published specs side by side, and estimate what a home sauna will add to your power bill.
Sizing and running-cost calculator
Running cost
The cost figure assumes the heaters draw full rated power the whole time, so treat it as an upper estimate. Find your rate per kWh on your electricity bill. The 17 cent default is only a starting point.
Spec comparison: Peak Saunas indoor cabins
Rows that fit the people, space and power you entered above are highlighted. All six are full spectrum infrared cabins with a published maximum of 150°F. Prices are the selling prices shown on peaksaunas.com on 29 October 2026; Peak runs frequent promotions, so check before you buy.
| Model | People | Exterior (W x D x H) | Interior | Electrical | Rated power | Wood | Price |
|---|---|---|---|---|---|---|---|
| Peak Mini | 1 | 31.5" W x 31.8" D x 67.1" H | 27.5" W x 26.6" D x 62.6" H | 120V / 10A, plugs into a standard outlet (NEMA 5-15P) | 1,200W | Canadian Hemlock | $5,550 |
| Peak Shasta | 1 | 42" W x 40" D x 75" H | 38" W x 36" D x 67" H | 120V / 15A, standard outlet (NEMA 5-15P) | 1,800W | Canadian Hemlock | $7,250 |
| Peak Crown | 2 | 48" W x 44" D x 79" H | 42" W x 38" D x 71" H | 120V / 15A, about 1,800W, on its own dedicated breaker (NEMA 5-15P) | 1,800W | Canadian Hemlock | $5,950 |
| Peak Everest | 2 | 53" W x 44" D x 75" H | 49" W x 40" D x 67" H | 120V / 20A, dedicated 20A circuit required (NEMA 5-20P) | 2,050W | Canadian Hemlock | $8,250 |
| Peak Fuji | 2 | 53" W x 44" D x 75" H | 49" W x 40" D x 67" H | 120V / 20A, dedicated 20A circuit required (NEMA 5-20P) | 2,050W | Canadian Red Cedar | $8,950 |
| Peak Denali | 3 | 61" W x 44" D x 75" H | 57" W x 40" D x 67" H | 240V / 20A, dedicated 240V circuit (NEMA 6-20P, electrician needed) | 2,850W | Canadian Hemlock | $9,950 |
Featured retailer: Peak Saunas
Peak Saunas sells indoor full spectrum infrared cabins direct in the lower 48 states. Its product pages list exterior and interior dimensions, the exact outlet or circuit each model needs and the assembly time (Peak says about 2 hours for two adults). Peak also says some models are HSA/FSA eligible if you qualify, so check with your plan administrator.
Home sauna buying guide
1. Size it for real use, not the label
Count how many people will use it at the same time on a normal day. A 1-person cabin suits one adult sitting upright. For two people side by side, look at interior width: in the table above it runs from 42 inches on the Crown to 49 inches on the Everest and Fuji. Measure your room, then allow space for the door to swing open and for the clearance the manual asks for around the cabin.
2. Check your power before anything else
This is where most installs go wrong. There are three common set-ups:
- Standard 120V 15A outlet: the Mini and Shasta plug straight in. The Crown also uses a 15A plug but Peak asks for it to be on its own dedicated breaker.
- Dedicated 120V 20A circuit: the Everest and Fuji need a 20A circuit with a NEMA 5-20 outlet.
- 240V circuit: the 3-person Denali needs a 240V 20A circuit put in by an electrician.
Don't run a sauna from an extension cord, and get a licensed electrician to check the circuit if you're not sure what you have.
3. Infrared, full spectrum or traditional
Far infrared panels are the most common type. "Full spectrum" means the cabin adds near and mid infrared emitters too; Peak lists 700 to 25,000nm across carbon far infrared and halogen/quartz emitters. Traditional saunas heat the air with a stove and rocks, run hotter and usually need more power or a 240V supply. If you want steam from water on hot rocks, an infrared cabin won't give you that.
4. Wood and build
Canadian Hemlock and Canadian Red Cedar are the two woods on this list. Cedar has a stronger smell and is usually more expensive; hemlock is lighter in colour and has little scent. Cabins weigh 300 to 400 lbs, so check your delivery route, doorway widths and that the floor is level.
5. EMF figures and extras
Many brands advertise low or near-zero EMF. These figures come from the manufacturer, so ask for the test report if it matters to you. Extras like red light panels, Bluetooth speakers, app control and chromotherapy lights add cost. Decide which ones you'll actually use.
6. Warranty, delivery and returns
Read the warranty terms for the cabin and for the heaters separately, check who pays for return freight on a large crated item, and confirm the delivery area. Peak ships to the lower 48 states.
Frequently asked questions
How much does a home infrared sauna cost to run?
Multiply the heater wattage by the hours you run it, then by your electricity rate. A 2,050W cabin running for 45 minutes including warm-up uses at most about 1.5 kWh, so at 17 cents per kWh that is roughly 26 cents a session. Heaters often cycle once the cabin is up to temperature, so the real figure is usually lower. Use the calculator on this page with the rate from your own bill.
Do I need an electrician to install a home sauna?
It depends on the model. Some 1-person and 2-person cabins plug into a standard 120V 15A outlet. Others need a dedicated 120V 20A circuit or a 240V circuit, which means a licensed electrician and possibly a permit under your local code. Check the electrical line in the spec table and the owner's manual before you order.
What size home sauna should I buy?
Buy for the number of people who will use it at the same time, then check the exterior footprint against your room with space left for the door to open and for airflow. Interior width matters more than the headline person count if you want to sit comfortably side by side.
What is the difference between an infrared and a traditional sauna?
A traditional sauna heats the air, usually with an electric or wood stove and rocks, and runs hotter. An infrared sauna uses heating panels that warm your body more directly, and the published maximum air temperatures are lower. The Peak cabins on this page list a maximum of 150°F. Which one you prefer is personal; infrared cabins tend to be easier to install indoors.
Is a home sauna safe for everyone?
Not always. Heat exposure isn't suitable for everyone, for example during pregnancy, with some heart conditions or with medication that affects how you handle heat. Talk to your doctor first if any of that applies to you. We don't make health claims about saunas.
Can I put a home sauna in a basement or garage?
Many indoor cabins can go in a dry basement or an insulated garage with a level floor and the right power supply. Damp, unheated or very cold spaces can affect the wood and the warm-up time. Follow the manufacturer's placement and clearance guidance in the manual.