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Short answer: almost always yes. Of the seven brands we read on November 7, 2026, six ask in writing for a circuit that feeds the sauna and nothing else, and the seventh (Almost Heaven) prints an amp "requirement" and "hard-wire connect" for each heater, which means its own circuit too. The only exceptions we found are two Peak Saunas cabins that the maker says need "no dedicated circuit". Here is what each maker asks for, in its own words.
What each maker says
- Sun Home: "The 1- to 3-person models each take a dedicated 120V, 20A circuit; the 4-person requires 240V. Dedicated circuit with GFCI protection (GFCI breaker or GFCI outlet); check local code." Traditional Nova: "A licensed electrician installs the dedicated 240V circuit: 30A for Nova 3, 40A for Nova 6."
- Peak Saunas: Everest and Fuji, "dedicated 20A circuit required (NEMA 5-20P)"; Mini, "use a dedicated 15A circuit"; Rainier and Shasta, "no electrician, no dedicated circuit"; outdoor models, "dedicated outdoor-rated circuit required (NEMA L6-30P locking, electrician required)".
- Sunlighten (spec sheets): "Dedicated 120V 20A circuit required" or "Dedicated 240V 20A circuit required"; "plug sauna directly into wall outlet; not a power strip, extension cord or converter".
- SaunaBox: Solara 2-Person, "requires a 20A NEMA 5-20 grounded outlet"; Forge Indoor, "240V, hardwired on a dedicated 20A double-pole circuit".
- Almost Heaven: on each traditional sauna, for example "Heater size: 6kW, 240V, 30-amp requirement, hard-wire connect", and a separate "Lighting electrical: 110V, 15-amp service, plug-in connect".
- Redwood Outdoors: "Voltage: 240V", "Breaker: 30A (6kW) & 40A (8kW)"; 50 A for its 9 kW packages.
- Sweat Kingdom: "Homecraft Revive Slim 6kW: requires a 40A breaker and an 8/3 hardwired connection"; "Requires a dedicated hardwired connection by a licensed electrician."
Why a sauna gets its own circuit
A sauna draws close to its full rated current for as long as it heats: 16.7 A for a 2,000 W cabin at 120 V, 25 A for a 6 kW heater at 240 V, 33.3 A for 8 kW [calc]. The National Electrical Code sizes a circuit for a load that runs three hours or more at 125 % of its current (NEC 210.19(A)(1) and 210.20(A)). Put a sauna on a circuit that already feeds other outlets and the total can pass what the breaker and wire are rated for. Every model with published watts is in the table on the panel check, with 125 % worked out.
Before you call the electrician
- Pick the model and note the exact heater or wattage (the price you see often includes the smallest heater).
- Note what the maker asks for: volts, amps, outlet type or "hardwired", GFCI, and the wire if it is printed.
- Note where the panel is, how far the sauna will be, and for outdoor saunas the route outside.
- Ask for a quote with the permit. Sweat Kingdom writes that most customers pay $500 to $1,500 for its hardwired connection, depending on the distance from the panel; that is the maker's estimate, not ours.
Licensed electrician, the maker's manual, your local code. This page reports what makers ask for and the arithmetic behind it. It is not a wiring method, and only an electrician who has seen your panel can tell you whether it has room for the sauna.
Saunas that avoid a new 240 V circuit: plug-in 120 V saunas. What the circuit will cost you to run: the cost calculator. All models: the home sauna comparison.
Frequently asked questions
Do infrared saunas need a dedicated circuit?
Most makers we read say yes. Sun Home: every 120 V cabin "on its own dedicated 120V, 20A circuit" with GFCI protection. Peak Saunas: a dedicated 20 A circuit for its Everest and Fuji, a dedicated 15 A circuit for its Mini, but "no dedicated circuit" for its Rainier and Shasta. Sunlighten's spec sheets print "Dedicated 120V 20A circuit required" or the 240 V equivalent.
Does a sauna need GFCI protection?
Sun Home asks for it on all of its cabins (a GFCI breaker or GFCI outlet, or a GFCI breaker on the Luminar 5) and says that skipping it "voids the warranty". The other pages we read do not mention GFCI. Your electrician applies the code your town has adopted.
Does a sauna require a disconnect?
None of the product pages we read says so. Where a disconnect is required depends on the code edition, the heater and the location (outdoor runs in particular): ask your electrician or your building department.
Can a sauna share a circuit with other things?
Not by the makers' instructions: Sun Home warns "Do not share the outlet with other appliances", and the others ask for a dedicated circuit. A sauna draws its full current for an hour or more, which is exactly the kind of load a shared circuit is not sized for.