Grant Air Source Heat Pumps

The Grant Aerona 290 is Grant UK's fifth-generation inverter-driven air-to-water heat pump range, using natural R290 refrigerant (GWP of just 3) for exceptional efficiency and ultra-low environmental impact. All models are MCS accredited, Quiet Mark certified, A+++ rated, and fully eligible for the UK Government's Boiler Upgrade Scheme (BUS) grant of up to £7,500.

Available in five single-phase outputs — 4kW, 6.5kW, 9kW, 12kW and 15.5kW — the range suits everything from small well-insulated homes to large older properties replacing gas or oil heating.

Why Choose Grant Aerona?

  • Natural R290 refrigerant — GWP of just 3, zero ODP
  • A+++ ErP energy rating across the entire range
  • Quiet Mark accredited — ultra-low noise operation
  • Maximum flow temperature of 75°C — no immersion heater needed
  • 7-year guarantee available via G1 trained installers
  • Compatible with the Aerona Smart Controller for remote monitoring
  • Operating range: -25°C to +35°C ambient air temperature
  • Connect and Notify approved — BUS grant eligible