Which listed IKI heater is cheapest?

The electric IKI WALL 6 kW has the lowest listed starting price at £1105, from Esaunashop.

Which IKI heaters are wood-fired?

The IKI Original Plus and IKI LÖYLY are listed as wood heaters. Their stated room-volume ranges are 20–30m³ and 20–40m³ respectively.

Does the Pillar IKI include Wi-Fi controls?

The Pillar listing offers an optional IKI UKU Wi-Fi Controller or no control unit. Check which option you are buying rather than assuming a controller is included.

IKI sauna heaters

The five IKI sauna heaters checked include electric and wood models, with listed outputs from 4.5–20kW. Prices start at £1105 for the electric IKI WALL 6 kW. Suppliers listed are Finnmark Sauna, Esaunashop, Homeiswherethesaunais and saunainter.com. Room-volume details are available for three of the five heaters.

By the zauna editorial team · Updated 7 October 2026

01 — Heaters compared

Heaters compared

Heaters compared
Heater	kW	Room (m³)	Controls	Price from
Pillar IKI Electric Sauna HeaterIKI	4.5kW	3–6	App or Wi-Fi	£1229
Electric sauna heater - IKI WALL 6 kWIKI	6kW	—	—	£1105
Wall IKI Electric Sauna HeaterIKI	9kW	—	—	£1199
IKI Original PlusIKI	9kW	20–30	Manual	£3100
IKI LÖYLYIKI	20kW	20–40	—	£1837

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02 — Key facts

Key facts

Heaters checked: 5
Power range: 4.5–20kW
Cheapest: £1105
Where to buy: Esaunashop, Homeiswherethesaunais, saunainter.com

03 — Compare room sizes and heater types

Compare room sizes and heater types

Start with your sauna’s room volume and your choice of electric or wood heating. The 4.5kW Pillar IKI Electric Sauna Heater is listed for rooms of 3–6m³, with a starting price of £1229.

The two wood models have larger listed room ranges. The IKI Original Plus is listed at 9kW for 20–30m³ and starts at £3100. The IKI LÖYLY is listed at 20kW for 20–40m³, starting at £1836.89.

No usable room-volume range is provided for either electric Wall model. Ask the supplier for sizing details before you choose either one.

04 — Check controls and electrical supply

Check controls and electrical supply

The electric IKI WALL 6 kW is listed as single-phase and starts at £1105. The 9kW Wall IKI Electric Sauna Heater is listed as three-phase and starts at £1198.99. The Pillar is also listed as three-phase.

For the Pillar, the listed options are an IKI UKU Wi-Fi Controller or no control unit. The IKI Original Plus has manual controls. Control details are not provided for the other three models, so check what is included before you buy.

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