What It Actually Costs to Run a Transcend Sauna (I Did the Arithmetic)

One of the hesitations we oftenI hear from people considering a home sauna is: “What’s it going to do to my electric bill?”

It’s a fair question, and we understand where it comes from. A sauna sounds like it should be expensive to run. It draws electricity, it makes heat, heat costs money. We’ve all watched our electric bill spike after a cold January, so the instinct is real.

But in this case the instinct is wrong, and it’s wrong by a wide margin. But rather than just say “don’t worry about it” (which is what most companies say, and is not an answer), I want to show you the actual arithmetic. Wattages, rates, sessions per week, dollars per year. You can check every step.

And I’m even going to be deliberately pessimistic in the math. I’d rather overstate our operating cost and have you find it lower than the reverse.

The wattages

Everything starts here. Our Transcend saunas draw:

• TR-1 / TRS-1 (1-person): 960 watts 
• TR-2 / TRS-2 (2-person): 1620 watts
• TR-3 / TRS-3 (3-person): 1920 watts

For scale: our 1-person sauna draws less power than a typical hair dryer, and about the same as a countertop toaster oven. The 2-person draws roughly what a window air conditioner does.

Our 1-person and 2-person plug into a standard 15-amp household outlet. No electrician, no dedicated circuit, no permit. Our 3-person needs a 20-amp circuit, which most homes already have somewhere.

The assumptions, stated plainly

Here’s where a lot of “cost calculators” quietly cheat, so let me put my assumptions on the table where you can vet for yourself.

Electricity rate: 18.83¢ per kilowatt-hour which is the U.S. residential average as of April 2026 (1). Your rate is probably different and I’ll deal with that below.

Session length: A 45-minute session with 15 minutes of preheat.

Draw: Here’s the pessimistic part. I’m going to assume the heaters pull full power continuously. That is not what actually happens, like any thermostatically controlled heater, ours cycle down once the cabin reaches temperature, so real consumption is meaningfully lower. But I’d rather hand you a number that’s too high than one you can’t trust.

Frequency: Every other day. That’s the rhythm we generally recommend which comes out to about 3.5 sessions a week or 182 a year. Frequent enough to keep the adaptation going, sustainable enough that you’ll still be doing it next year.

The numbers

Impressive right?!

Using our two-person sauna every other day, all year, costs about fifty-five dollars. Not per month. Per year. It’s roughly a dollar a week which is much less than a single cup of coffee out!

And remember, those figures assume the heaters never cycle off. Factor in realistic thermostatic cycling and the annual numbers drop even lower. 

There are so many reasons I love our infrared saunas, and I still find this one of the most underappreciated facts about them. People agonize over the purchase price (understandly, we do have high end saunas made with high quality parts that last for decades) and then assume there’s a lurking operating cost that will bite them later. There isn’t. The sauna is the cheap part of your utility bill.

Why it’s so low: heating a body, not a room

This isn’t magic, and I don’t want to present it as though we’ve broken physics. It comes down to what the two kinds of sauna are actually trying to do.

A traditional Finnish sauna heats air and stones so a whole cabin’s worth of atmosphere is raised to 175–195°F, plus a heavy mass of rocks brought up to temperature. That takes a great deal of energy, and much of it goes into the room rather than into you.

Far infrared works differently. It emits infrared energy that warms your body directly, which is why a far infrared cabin can sit at a far gentler air temperature and still raise your core temperature and produce a serious sweat. You’re not paying to superheat a volume of air. You’re paying to warm a person.

That’s the efficiency story in one sentence: less energy is required because less of the energy is going somewhere other than you. 

There’s a design layer on top of that, too. Our patented sauna heaters and electrical wires were designed by our owner who is an electrical engineer. Compared to other infrared saunas ours are noticeably more efficient. 

The traditional sauna comparison

Now to the contrast people ask about most.

A residential traditional electric sauna heater typically runs 6 to 9 kilowatts (1) — a figure you can verify on the spec sheet of any traditional heater sold. Against our 0.96–1.9 kW, that’s roughly four to nine times the draw. Traditional saunas also take considerably longer to preheat, since you’re waiting on all that air and stone mass.

Let me run their numbers as generously as I can. I’ll assume the traditional heater cycles down to half power once it reaches temperature — a favorable assumption I didn’t grant our own saunas above:

Even handicapping the comparison in their favor, a traditional sauna uses roughly five to seven times the energy per session.

The cost before you ever flip the switch

There’s a second cost that doesn’t show up on a utility bill at all, and it’s the one I’d want to know about as a buyer.

Traditional electric saunas almost always require a dedicated 240-volt circuit, hardwired by a licensed electrician. (You’ll see this called 220V, 230V, or 240V; in North American homes it’s the 240V split-phase service that also runs your dryer or an EV charger.) A standard wall outlet does not cut it.

As for what the wiring costs: independent home-services cost data puts a new dedicated 240V circuit at roughly at a national average near $750. And if your panel has no spare capacity, you’re looking at a subpanel or a service upgrade on top of that.

Our TR-1 and TR-2 plug into an outlet you already have. That difference is a real part of the cost comparison that rarely makes it into companies’ information.

I’d rather you weigh it now than discover it after you’ve bought a sauna.

Two honest caveats

These are estimates, not meter readings. They rest on assumptions about session length, preheat, and cycling. Your sessions may run longer, your room may be colder, your preheat can vary. 

Operating cost is not the whole cost of ownership. It’s a small line in a bigger picture that includes purchase price, build quality, and how many years the sauna actually lasts. A cheap sauna that fails in year three is expensive no matter what it drew from the wall. We’ve written separately about the full ownership math here.

Conclusion

• TR-1: about $33 a year. TR-2: about $55. TR-3: about $65 — using every other day, at the national average rate, with deliberately pessimistic assumptions.
• Traditional saunas use roughly five to seven times the energy per session, and require a dedicated 240V circuit that typically adds $750+ in electrician work.
• Our 1- and 2-person models plug into a standard household outlet.
• Your local rate and household environment can vary the numbers.

Electricity was never the expensive part. It’s the one worry I hope this article took it off your list! 

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References

1. U.S. Energy Information Administration. Electric Power Monthly, Table 5.6.A: Average Price of Electricity to Ultimate Customers by End-Use Sector, by State. https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_a (accessed July 2026)