Heater database · HUUM
HUUM Drop 6
HUUM Drop 6 is a 6 kW electric heater rated for sauna rooms of 177–318 ft³ (5–9 m³). Wall-mounted, open stone design.

6 kW25.0 A at 240 V · 8.7 A per phase at 400 V
177–318 ft³rated room · 5–9 m³
121 lbstones · 55 kg
30 Abreaker per spec · 10 AWG wire · rule of thumb 40 A
Affiliate link. Heaters are listed by fit, not by commission.
Size and weight
- Weight
- 24.3 lb (11 kg) without stones
- Note
- Separate HUUM controller required, sold separately.
- Clearances
- See the installation manual
Size, weight and circuit: The Sauna Heater, retailer specification.
Rooms it fits
Indoor rooms with insulated walls, a 7 ft ceiling and a glass door, which counts extra. Warm-up is from 68 °F to 176 °F, estimated with the calculator's model. For your own room, glass, masonry or log walls, use the calculator.
| Room | Counts as | Fit | Warm-up |
|---|---|---|---|
| 4 × 5 ft | 199 ft³ | ✓ Rated for this room | 51 min |
| 5 × 5 ft | 234 ft³ | ✓ Rated for this room | 57 min |
| 5 × 6 ft | 269 ft³ | ✓ Rated for this room | 63 min |
| 6 × 6 ft | 311 ft³ | ✓ Rated for this room | 71 min |
| 6 × 7 ft | 353 ft³ | Too small for this room | – |
| 7 × 8 ft | 451 ft³ | Too small for this room | – |
| 8 × 8 ft | 507 ft³ | Too small for this room | – |
| 8 × 10 ft | 619 ft³ | Too small for this room | – |
Similar heaters from other brands
- Helo Himalaya 706.8 kW · 177–318 ft³
- Tulikivi Usva M 686.8 kW · 177–318 ft³
- Saunum Air 76.9 kW · 177–318 ft³
- Helo Roxx 606 kW · 177–353 ft³
Source
Rated room range and stone load from HUUM's product information, checked October 2026. Ranges are the manufacturer's calculated room volumes; check the manual for safety distances, and have a licensed electrician make the connection. Photo: HUUM, used with permission.