Sauna Heaters for Sale | HUUM, Harvia & Narvi

SweatDecks carries electric sauna heaters from HUUM, Harvia and Narvi, the three manufacturers that dominate Finnish and Estonian sauna building. Prices run from $1,064 for compact wall-mounted units to $4,497 for large commercial-grade packages, and most models ship with stones, controls and mounting hardware included.

Choosing a heater comes down to room volume: as a rule of thumb you need about 1 kW per 45 cubic feet of sauna space, with extra capacity for glass walls or outdoor installs. Every heater package on this page lists its recommended room size, and our team in Austin will confirm sizing and electrical requirements before your order ships. Orders over $5,000 ship free and Affirm financing is available at checkout. If you are building from scratch, pair your heater with a sauna kit or browse sauna stones and controls.

Frequently Asked Questions About Sauna Heaters

What size sauna heater do I need?

Plan on roughly 1 kW of heater power per 45 cubic feet of room volume. A typical 4-person sauna around 280 cubic feet runs well on a 6 kW unit, while larger 6-person rooms usually need 8 to 10.5 kW. Add capacity if your sauna has glass panels or sits outdoors in a cold climate.

How much does a sauna heater cost?

Electric sauna heaters at SweatDecks range from $1,064 to $4,497 depending on power output, controls and included accessories. Most residential buyers spend between $1,500 and $3,000 for a heater package with stones and a digital controller.

What electrical service does an electric sauna heater require?

Most residential sauna heaters run on a dedicated 240V circuit sized to the heater's draw, typically 30 to 60 amps. A licensed electrician should run the circuit and install the disconnect; we provide the spec sheet for permitting.

Which brand is best: HUUM, Harvia or Narvi?

All three are established Nordic manufacturers. HUUM leads on design and app-controlled convenience, Harvia offers the broadest range and price points, and Narvi is a solid traditional choice. Our team uses and installs all three and can match one to your build.