Combi and hybrid saunas
The short answer
"Combi" and "hybrid" mean two different things. A combi heater is a traditional heater with a built-in steamer, for dry sauna or softer, humid heat. A hybrid sauna usually has both infrared panels and a traditional heater. Both suit households who like different heat. Ask each seller exactly what's included.
On this page
What combi and hybrid mean
| Type | What it is | Good for |
|---|---|---|
| Combi heater | Electric heater with stones and a built-in steamer | Switching between a hot, dry sauna and a cooler, steamy one |
| Infrared and traditional hybrid | One cabin with infrared panels and a heater with stones | Gentle infrared on weekdays, a full sauna at weekends |
| Infrared and steam | Infrared cabin with a small steam generator | Adding humidity to infrared |
Irish sellers listing combination or combi saunas include Crystal Bathroom and Spa Solutions Ireland.
Combi heaters
A combi heater looks like a normal sauna heater, with a water tank and steamer built in. As an example, Harvia's Virta Combi HL90S:
- 9 kW, for saunas of 8 to 14 m³, with a minimum room height of 2 m.
- A 5 litre steamer tank, which can be filled automatically from a water outlet.
- 50 kg of stones, plus cups for sauna fragrances.
- Needs a separate control unit and a dedicated supply (3 × 16 A fuses).
Infrared and traditional hybrids
A hybrid cabin gives you infrared heat, at about 43 to 57°C, or a traditional sauna at about 66 to 91°C with steam from the stones. Some let you run both together.
- Infrared mode warms up faster and costs less per session. See running costs.
- Traditional mode needs the heater's dedicated circuit, so a hybrid won't usually plug into a socket.
- Panels and stones share the space, so check the panels are guarded from the heater and positioned where you'll sit.
What to check
- What "combi" means for that model, in writing.
- Electrical supply for the heater, the steamer and any panels together.
- Water: manual fill, or a plumbed supply.
- Controls: whether a separate control unit is included.
- Wood and finish suited to humid use, since steam makes the cabin wetter.
Common questions
What is a combi sauna?
It usually means a sauna with a combi heater: a normal electric heater with a built-in steamer, so you can have a hot, dry sauna or a cooler, more humid one. Some sellers also use "combi" or "hybrid" for cabins with both infrared panels and a traditional heater.
What is a hybrid sauna?
Most often, a cabin with both infrared panels and a traditional heater with stones, so you can use either, or both together. Check what a seller means, because the terms aren't used consistently.
Are combi saunas worth it?
If more than one person will use the sauna and you like different heat, yes. If you're sure you only want one type, a single-purpose heater is simpler and cheaper.
Does a combi heater need a water supply?
Some do. Harvia's Virta Combi has a 5 litre tank that can be filled automatically from a water outlet. Others are filled by hand. Check before planning the install.
Do combi saunas need special wiring?
Combi heaters usually need the same dedicated circuit as a traditional heater, and often a separate control unit. A hybrid cabin with a heater and infrared panels may need more supply than either alone. A registered electrician should check.
Sources
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