Infrared Sauna Electrical Requirements: 15A vs 20A, Circuits & Setup
Electrical setup is simpler than most buyers fear — with one exception. Here’s the complete picture.
The short version
Nine of the ten models in this guide plug into a standard 120V/15A household outlet. Unbox, assemble, plug in, sauna. Only the HeatWave Santa Fe 3-Person, at 1805W, requires a 120V/20A circuit.
120V/15A plug-and-play: what it means
A 15A circuit at 120V can theoretically deliver 1,800W, and in practice you want sustained loads well under that. The cabins in this guide draw 1,290W (SunRay Sedona) to 1,540W (JNH Joyous) — comfortably inside what a standard outlet handles. “Plug-and-play” is literal: no electrician, no panel work, no permits in most jurisdictions.
The 20A exception: HeatWave Santa Fe
The Santa Fe’s 1805W exceeds what a 15A circuit should sustain, so it specifies 120V/20A. Many homes already have 20A circuits — kitchens, garages, laundry rooms — but rarely in bedrooms or basements where saunas usually live. If you don’t have one where you want the sauna, you’re hiring an electrician. When comparing the Santa Fe ($1,799–$2,499) against the 15A Dynamic Madrid 3-Person ($2,199–$2,799), add the electrical work to the Santa Fe’s side of the ledger — the gap may be smaller than it looks.
The dedicated circuit recommendation
Even for 15A plug-and-play models, run the sauna on a dedicated circuit if you can. A 1,500W sauna plus a 1,500W space heater on the same 15A line will trip the breaker — possibly mid-session, in the dark, in a hot box. It’s not a safety crisis (that’s what breakers are for), but it’s annoying. If your panel has room, a dedicated 15A line is cheap insurance; if not, just make sure nothing else power-hungry shares the outlet’s circuit during sessions.
Operating cost math
Per-session electricity cost is simple: watts × hours × your electricity rate ÷ 1000. Examples at the US average of ~$0.17/kWh:
- SunRay Sedona (1290W), 45-min session: 1.29 × 0.75 × $0.17 ≈ $0.16
- JNH Joyous (1540W), 45-min session: 1.54 × 0.75 × $0.17 ≈ $0.20
- HeatWave Santa Fe (1805W), 45-min session: 1.81 × 0.75 × $0.17 ≈ $0.23
- HigherDOSE blanket (420W), 45-min session: 0.42 × 0.75 × $0.17 ≈ $0.05
Even daily use costs a few dollars a month — the purchase price dominates total ownership cost, not the electricity. Our running-costs guide breaks down the full picture.
Placement and the outlet
Put the sauna within cord reach of the outlet — extension cords are not recommended for sustained 1,500W loads. Plan placement (basement, garage, spare room) around outlet location, or have the electrician add an outlet where you want the sauna. More placement advice in our indoor vs outdoor guide.