Harnitek HeatBoost Fan Coil Radiators
Revolutionary fan coil radiators that deliver 3–7x more heat output than a standard radiator. Works brilliantly with heat pumps AND gas boilers. Available in two sizes: 350 (3.1kW) and 550 (6.3kW).
How HeatBoost Works
Unlike a standard radiator that relies on natural convection, HeatBoost uses a near-silent DC fan to actively push warm air into the room — delivering heat faster and more evenly.
With a Heat Pump
HeatBoost radiators are specifically designed for low-temperature heating systems. They operate effectively from just 35°C flow temperature — allowing your heat pump to run at peak efficiency (higher COP) and significantly reducing running costs.
- ✓Operates from 35°C flow temperature
- ✓Allows heat pump to run at peak efficiency
- ✓Eliminates rooms not reaching temperature
- ✓Qualifies alongside BUS grant installations
With a Gas Boiler
You don't need a heat pump to benefit from HeatBoost. They work brilliantly with your existing gas or oil boiler. Because HeatBoost heats rooms so quickly, you can turn down your boiler thermostat — the boiler switches off sooner, which may help reduce your gas bills.
- ✓Heats rooms significantly faster than standard radiators
- ✓Turn down boiler thermostat — boiler switches off sooner
- ✓May help reduce gas bills
- ✓No heat pump required — retrofit to existing system
Available in Two Sizes
HeatBoost 350
Bedrooms, home offices, and smaller living spaces
HeatBoost 550
Open-plan living areas, kitchens, hallways, and commercial spaces
HeatBoost in Real Homes
Interested in HeatBoost Radiators?
Whether you have a heat pump or a gas boiler, HeatBoost can transform your home's heating. Get a free, no-obligation quote today.