01 — Heaters compared
Heaters compared
| Heater | kW | Room (m³) | Controls | Price from |
|---|---|---|---|---|
| Electric Sauna Heater SAWO30 Wall NBSawo | 4.5kW | 3–6 | Built-in | £407 |
| Electric sauna heater – SAWOTEC Tower Wall, without control unit 6 kWSawo | 6kW | — | Separate panel | £447 |
| Sawo sauna heaterSawo | 9kW | 8–14 | — | £300 |
02 — Key facts
Key facts
- Heaters checked
- 3
- Power range
- 4.5–9kW
- Cheapest
- £300
- Where to buy
- saunainter.com, Esaunashop, Alibaba
03 — Match the heater to your room and supply
Match the heater to your room and supply
The Electric Sauna Heater SAWO30 Wall NB is rated at 4.5kW for rooms of 3–6m³. It has built-in controls, uses a three-phase supply and is listed from £406.86 at saunainter.com. If your room falls within that volume range, these details give you a starting point for comparison.
The 6kW SAWOTEC Tower Wall is listed by Esaunashop. It uses a single-phase supply and comes without a control unit. Its room-volume fields do not provide a usable sizing range. Confirm the suitable room volume and control requirements before choosing it.
The 9kW Sawo sauna heater listed on Alibaba is rated for rooms of 8–14m³. It uses a three-phase supply and starts at £300. Controls are not specified in the listing data.
04 — Look beyond the purchase price
Look beyond the purchase price
The lowest listed price belongs to the highest-powered heater here. That makes price alone a poor way to narrow your choice: check your room volume and supply phase first.
All three heaters exceed the 3.6kW dedicated-circuit threshold.
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