The Heaters

The heart of every sauna.

A sauna is only as good as the heat inside it. Every Saunest sauna is matched with a genuine Nordic heater from HUUM or Harvia, with electric, Wi-Fi, and wood-burning options depending on the model.

Find your heater

Pick your Saunest model or enter the room size, and the heater lineup below will filter to the matching options.

The lineup below is now filtered to your matches. Use the filter buttons to see everything again.

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WoodHarvia M3 wood-burning sauna heaterPhoto blocked by host.

Harvia · Wood

M3 Wood-Burning Heater

Classic wood-fired heat with a glass door and a traditional sauna atmosphere.

Wood-fired212–459 cu ft

Harvia describes the M3 as a classic heater for small saunas, designed for even heat, efficient air circulation, and the warm glow of fire through a glass door.

  • Dropdown labelHarvia M3 wood-burning heater
  • TypeWood-burning
  • Room size212–459 cu ft
  • FinishGraphite black
  • OriginFinland

Best for: Tube, Barrel, Mini Three, Sauna House One

Official product source
LocalHUUM DROP 9 kW electric sauna heaterPhoto blocked by host.

HUUM · Electric

DROP 9 kW · Local

A wall-mounted, water-drop-inspired heater with a deep stone bed for gentle steam.

Local control55 kg stones

HUUM’s DROP is inspired by the shape of a drop of water. It is compact, wall-mounted, and holds a larger-than-expected stone volume for mild, long-lasting steam.

  • Dropdown labelHUUM DROP 9 kW electric heater - Local controller
  • Power8.5 / 9 kW class
  • Room size8–13 m³
  • Stones55 kg
  • OriginEstonia

Best for: Tube, Barrel, Mini Three, Sauna House One

Official product source
Wi-Fi
HUUM DROP heaterHUUM UKU WiFi sauna controller and mobile app

HUUM · Electric + Wi-Fi

DROP 9 kW · Wi-Fi

The same DROP heater paired with UKU WiFi control for app-based preheating.

Wi-Fi controlPhone app

The Wi-Fi option uses the same DROP heater body and adds HUUM’s UKU WiFi control system, so the sauna can be started from the wall panel or mobile phone.

  • Dropdown labelHUUM DROP 9 kW electric heater - Wi-Fi controller
  • ControlPanel + mobile phone
  • App featuresStart/end time, target temp, ready notification
  • ControllerUKU WiFi
  • OriginEstonia

Best for: Tube, Barrel, Mini Three, Sauna House One

Official controller source
ElectricHarvia KIP 8 kW electric sauna heaterPhoto blocked by host.

Harvia · Electric

KIP 8 kW

A traditional wall-mounted heater with built-in manual controls and a generous stone space.

8 kW7–12 m³

Harvia’s KIP is a proven wall-mounted heater. Its large stone space supports optimal heat release, while the outer casing stays low in temperature.

  • Dropdown labelHarvia KIP 8 kW electric heater
  • Power8 kW
  • Room size7–12 m³
  • ControlManual switches
  • InstallWall-mounted

Best for: Tube saunas

Official product source
ElectricHarvia KIP 6 kW electric sauna heaterPhoto blocked by host.

Harvia · Electric

KIP 6 kW

The same trusted KIP family, sized for compact sauna rooms.

6 kW5–8 m³

This 6 kW KIP keeps the classic wall-mounted format, manual controls, and large stone space, but is matched to smaller rooms.

  • Dropdown labelHarvia KIP 6 kW electric heater
  • Power6 kW
  • Room size5–8 m³
  • ControlManual switches
  • InstallWall-mounted

Best for: Mini Two, Egg sauna

Official product source
CompactHarvia Vega Compact 3.5 kW electric sauna heaterPhoto blocked by host.

Harvia · Electric

Vega Compact 3.5 kW

A small-space electric heater with ergonomic top controls and low wall mounting.

3.5 kW2–4.5 m³

Harvia describes Vega Compact as a powerhouse for small saunas. It installs easily on the wall, can mount low, and helps bathers on lower benches enjoy steam down to their toes.

  • Dropdown labelHarvia Vega Compact 3.5 kW electric heater
  • Power3.5 kW
  • Room size2–4.5 m³
  • ControlManual switches
  • InstallWall-mounted

Best for: Mini sauna

Official product source
ElectricHarvia Cilindro PC90 9 kW electric sauna heaterPhoto blocked by host.

Harvia · Electric

Cilindro PC90 9 kW

A pillar heater with a massive stone volume for soft or sharper steam.

9 kW80 kg stones

The Cilindro’s grate-like outer shell lets bathers adjust the steam: softer when water is thrown onto the side, sharper when poured directly on top.

  • Dropdown labelHarvia Cilindro 9 kW electric heater
  • Power9 kW
  • Room size8–14 m³
  • Stones80 kg
  • ControlIntegrated timer + thermostat

Best for: Barrel, Mini Three, Sauna House One

Official product source
PremiumHUUM STEEL 10.5 kW electric sauna heaterPhoto blocked by host.

HUUM · Electric

STEEL 10.5 kW

A slim, powerful floor-standing heater with fast airflow and a large stone capacity.

10.5 kW150 kg stones

HUUM presents STEEL as a sleek, powerful choice for modern home saunas. Its built-in air tunnel supports effective airflow and quicker heating, while the large stone amount creates gentle steam.

  • Dropdown labelHUUM STEEL 10.5 kW electric heater
  • Power10.5 kW
  • Room size10–16 m³
  • Stones150 kg
  • ControlUKU Local or WiFi

Best for: Mini Three premium electric option

Official product source
ControllerHUUM UKU WiFi sauna controller with appPhoto blocked by host.

HUUM · Controller

UKU WiFi Control

A smart control package for heating the sauna from the wall panel or phone.

Mobile appUp to 18 kW

UKU WiFi is designed for saunas with Wi-Fi coverage. It can start heating from the control panel or phone, set target temperature, schedule heating, and send a notification when the sauna is ready.

  • ForHUUM Wi-Fi heater packages
  • ControlPanel + smart phone
  • Temperature40–110°C
  • Heating time1, 3, 6, 12, or 18 h
  • SafetyOverheating protection + child lock

Pairs with: HUUM DROP Wi-Fi and HUUM STEEL packages

Official controller source
ControlsHUUM UKU control panel design options and appController panel image blocked by host.

HUUM · Control Panels

UKU Panel Options

Control panel design options for matching the sauna interior.

ClassicGlassWood

HUUM notes that UKU control panels come in CLASSIC, GLASS, and WOOD designs. The panel style changes the look, while the UKU system provides the control function.

  • Panel stylesClassic, Glass, Wood
  • UseOn-site sauna control
  • Wi-Fi versionAdds mobile app control
  • IncludedClassic Black panel in UKU set

Note: Panel image is informational; actual included package depends on selected heater option.

Official controller source

A note on HUUM control

HUUM DROP Local and HUUM DROP Wi-Fi use the same heater body. The difference is the control package: Local is operated at the sauna, while Wi-Fi adds app control, scheduling, target temperature, and ready notifications. The UKU set includes a CLASSIC Black control panel, with GLASS and WOOD design options available.

Still deciding? Come feel the difference in person.

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