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Sauna electrical supply and permits

Most electric sauna heaters are hard-wired and draw a lot of current. The North American Sauna Society, Almost Heaven and Saunum all say to have a licensed or certified electrician connect them; this page collects what the makers publish so you know what to ask.

Use a licensed electrician

Saunakivi does not give electrical instructions. The statements below are the makers' and the society's, quoted so you know what your electrician will ask about.

NASS says to always read the heater instructions and use a licensed electrician for wiring. Almost Heaven tells buyers who are not licensed electricians to hire one to hard-wire the heater. (North American Sauna Society; Almost Heaven Saunas)

Saunum's US manual says the sauna may only be connected by a certified electrician following the NEC and local building codes.

Circuits and breakers

NASS says heater sizes typically run 1.5–15 kW, with breakers from 15 to 60 amps, and advises having an electrician confirm your panel has capacity. (North American Sauna Society)

Almost Heaven says its standard kit heaters need a 240 V hardwired connection on 30–40 amps, with some premium heaters needing up to 60 amps. (Almost Heaven Saunas)

Finnleo says standard breakers sized to the heater per the National Electric Code should be used. Harvia's KIP manual says the heater, control and contactor must be grounded per the NEC and local codes. (Harvia (manual distributed by Almost Heaven Group / Baltic Leisure))

Wood-burning heaters and permits

Harvia notes that some areas require professional installation of a wood-burning heater by law.

Harvia advises checking local rules first, because some areas restrict wood-burning heaters or require permits or inspections.

Examples on Saunakivi

HUUM DROP 9

HUUM · electric · 9 kW · rated for 8–13 m³ (about 283–459 ft³, our conversion)

Questions

Does a sauna heater need a dedicated circuit?

NASS says heater sizes typically run 1.5–15 kW, with breakers from 15 to 60 amps, and advises having an electrician confirm your panel has capacity. Almost Heaven says its standard kit heaters need a 240 V hardwired connection on 30–40 amps, with some premium heaters needing up to 60 amps.

Sources: Build a Sauna; Almost Heaven Saunas | Frequently Asked Questions

Do I need an electrician to install a sauna heater?

NASS says to always read the heater instructions and use a licensed electrician for wiring. Almost Heaven tells buyers who are not licensed electricians to hire one to hard-wire the heater.

Sources: Build a Sauna; Almost Heaven Saunas | Frequently Asked Questions

Read next

Sources

  1. Build a Sauna — North American Sauna Society
  2. Almost Heaven Saunas | Frequently Asked Questions — Almost Heaven Saunas
  3. Saunum-Air-US-ENG-_V_25_12.1_WEB.pdf — Saunum
  4. Frequently Asked Sauna Questions, Answered by Finnleo — Finnleo
  5. Harvia KIP sauna heater Owner’s/Operator’s Manual (installation, wiring, operation) — Harvia (manual distributed by Almost Heaven Group / Baltic Leisure)
  6. Choosing the right wood-burning heater — Harvia