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zauna
Electric sauna heater beside a wood-burning sauna stove.

Sauna heaters

10kW and above

This selection covers 11 sauna heaters rated from 10–36kW, with listed prices starting at £145. It includes electric heaters and wood-burning stoves. Room-volume ranges vary between models, so use the listed capacity alongside power when comparing options. For electric models, also compare the supply phase and control arrangements.

By the zauna editorial team · Updated 5 October 2026

01 — Heaters compared

Heaters compared

Heaters compared
HeaterkWRoom (m³)ControlsPrice from
Tylo Air Traditional Soft Sauna Heater Stainless SteelTylö10kW10–18—£1361
Narvi Peak Commercial Electric Sauna HeaterNarvi10.5kW—Separate panel£1907
Tylo Sense Elite 10 Sauna Heater c/w Elite Control PanelTylö10.5kW10–18App or Wi-Fi£2919
Harvia Virta Series 10.5kW Sauna HeaterHarvia10.5kW177–635Separate panel£2954
PortaSauna Hex XL - Portable Sauna11kW12–20—£2250
Scandia 40K BTU Gas Sauna Heater11.7kW17–34—£2867
HUUM HIVEHuum12kW12–25Separate panel£145
Harvia Hidden Heater HH12 12,0 KWHarvia12kW12–17Separate panel£892
Harvia Wood Burning Sauna StoveHarvia12kW10–25Manual£999
Harvia Hidden Sauna Heater 12kW - HH12Harvia12kW12–17Separate panel£1555
Small Sauna Pod12kW——£5225
Sauna Sanna12kW30–60Built-in£13990
IKI Original13kW14–30—£208
Saunum Air L Series, 15.2kW Sauna Heater w/Climate Equalizer, BlackHarvia15.2kW13–21—£4195
Harvia Legend 150 SL black (through the wall)Harvia16kW6–13—£1185
Harvia Virta Pro Series 16.0kW Sauna HeaterHarvia16kW10.1–26Separate panel£3036
Harvia M3Harvia16.5kW——£109
Garden Sauna Cabin ELDA S (44 mm), 2x2 m, 4 m²16.5kW6–13—£6530
Helo Elite Free Control PanelHelo17kW——£570
Huum Hive Wood 17 kW LS (through the wall)Huum17kW——£1269
UKU Wi-Fi Control Unit Glass/BlackHuum18kW—App or Wi-Fi£678
Narvi Kuru Wood Burning Sauna HeaterNarvi20kW8–14—£629
Narvi NC 16/20/24 Wood Burning Sauna HeaterNarvi20kW——£860
IKI LÖYLYIKI20kW20–40—£1837
Harvia Pro 20 SL Wood Burning Stove - BlackHarvia24.1kW8–20Controls on heater£1330
Harvia Qube Pro Commercial Sauna Heater Silver Black Protective CoatingHarvia30kW40–75App or Wi-Fi£3811

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02 — Key facts

Key facts

Heaters checked
26
Power range
10–30kW
Cheapest
£109

03 — Compare room volume, not just power

Compare room volume, not just power

Start with your sauna’s room volume and compare it with each model’s listed range. The 10kW Tylo Air Traditional Soft Sauna Heater Stainless Steel covers 10–18m³. The 12kW HUUM HIVE covers 12–25m³, while both Harvia Hidden HH12 listings cover 12–17m³.

A higher power rating does not necessarily mean a larger listed room range across different heater types. The 16kW Harvia Legend 150 SL has a range of 6–13m³. The 24.1kW Harvia Pro 20 SL covers 8–20m³. At the top of this selection, the 36kW Harvia Qube Pro lists 40–75m³.

04 — Check supply, controls and listed prices

Check supply, controls and listed prices

If you are comparing electric heaters, check the listed supply phase. The Tylo Air and Tylo Sense Elite 10 are single-phase models. The Narvi Peak, HUUM HIVE, both Harvia Hidden listings and Harvia Qube Pro are three-phase models.

Control arrangements also differ. The Tylo Sense Elite 10 lists an Elite Cloud Control Panel with WiFi connectivity. The HUUM HIVE requires a separate control unit, and both Harvia Hidden listings specify separate controls.

The lowest listed starting price is £145 for the HUUM HIVE. Compare that price alongside its separate-control requirement rather than treating price alone as the deciding factor.

05 — Frequently asked questions

Frequently asked questions

Not sure what size you need?

Work out the right kW for your room from its size, insulation and glass.

Heater size calculator