Heating
Industrial fan heater 15 kW
Master B15
15 kW of clean electric heat for warehouses, halls and workshops.
The Master B15 is a three-phase industrial fan heater that pushes 1,700 m³ of warm air an hour — enough to bring a cold warehouse, sports hall or workshop up to temperature quickly. Switch between 15 kW and 7.5 kW, set the thermostat and leave it. Electric, so no fumes, no flue and no fuel deliveries: safe to run indoors where propane and diesel heaters aren't. Fan-only mode doubles as ventilation on warm days.
Good for
- Warehouses & distribution units
- Sports & village halls
- Workshops & factory floors
- Agricultural buildings
- Construction sites with 3-phase power
- Event spaces & marquees
What's included
- Thermostat 5–35 °C
- 2 heat settings (7.5 / 15 kW) + fan-only
- 32 A 5-pin three-phase plug
- Quick-start card
Specifications
| Model | Master B15 (B15IT) |
|---|---|
| Heat output | 15 kW / 7.5 kW (51,000 / 25,600 BTU) |
| Airflow | 1,700 m³ / hour |
| Coverage | Up to ~125 m² per unit at normal ceiling height |
| Supply | 400 V three-phase · 32 A 5-pin plug · rated current 22 A — will not run from a 13 A socket |
| Running cost | Approx. £3.75–£4.50 per hour on full, half that on 7.5 kW |
| Thermostat | 5–35 °C, with overheat cut-out and thermally protected motor |
| Protection | IP24 |
| Size / weight | 35 × 47 × 49 cm · 15 kg |
| Warranty | 3 years (manufacturer) |
Common questions
I don't know if I have three-phase.
Look for a red 5-pin 32 A socket, or ask whoever looks after your building's electrics. Most warehouses and workshops have one; most shops and offices don't. If you only have single-phase, several of our 2.2 kW infrared heaters run from normal sockets instead.
How quickly will it warm a space?
A 15 kW unit raises the temperature of a 125 m² workshop by roughly 10 °C in 30–45 minutes, then the thermostat holds it there. Bigger or draughtier spaces take longer — hire two.
Is it noisy?
It's a big fan, so there's a steady whoosh — fine in a warehouse or workshop, not something you'd want next to a desk.
