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UK/Ireland · Grant UK

Grant UK heat pumps from £500 after grant

Heat Geek Elite-designed Grant UK air-source installation in Staffordshire. BUS grant handled. MCS certified. COP up to 4.50.

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Heat Geek Elite·Octopus partner·MCS 162733·Gas Safe 635521·4.9★ Trustpilot·23 years local
Why Grant UK?

UK/Ireland engineering, designed for UK homes.

Grant UK specialises in renewable heating solutions and their Aerona3 range is designed specifically for the British and Irish climate. As a company focused entirely on heating, Grant brings deep expertise and a product range tailored to retrofit installations. Their oil-to-heat-pump expertise is particularly valuable for off-gas properties.

  • Designed specifically for UK and Irish climates
  • Specialist renewable heating company — heating is all they do
  • Excellent retrofit performance for older properties
  • Particularly strong for oil-to-heat-pump conversions
  • G1 performance monitoring system included
  • 5-year warranty as standard
Key specifications
  • RefrigerantR32
  • Max Flow Temp65°C
  • Max COP4.50
  • MCS ListedYes
  • BUS Grant EligibleYes (£7,500)
The Grant UK range

Prices include installation and MCS certification.

£7,500 BUS grant deducted where eligible. Final number confirmed after heat loss survey.

Aerona3 R32 6kW
Monobloc · 4–6 kW
  • COP up to 4.50
  • Up to 65°C
  • 50 dB(A)
  • 5 years
  • Smaller homes (1–2 beds)
£500after grant
Full price from £8,000 · Install included
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Most popular
Aerona3 R32 10kW
Monobloc · 8–10 kW
  • COP up to 4.20
  • Up to 65°C
  • 53 dB(A)
  • 5 years
  • Average homes (2–3 beds)
£2,000after grant
Full price from £9,500 · Install included
Quote this model
Aerona3 R32 17kW
Monobloc · 14–17 kW
  • COP up to 3.90
  • Up to 65°C
  • 56 dB(A)
  • 5 years
  • Large detached homes (4–5+ beds)
£4,000after grant
Full price from £11,500 · Install included
Quote this model
Before any Grant UK

A heat loss survey confirms Grant UK is the right fit.

£250 for a room-by-room assessment. Refunded in full against the install. If Grant UK isn't the best match, we'll tell you which brand is.

Book a survey — £250How surveys work
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Questions?

Grant UK heat pumps, answered.

Grant UK is highly regarded by installers, particularly for retrofit installations. As a specialist heating company (rather than a huge conglomerate), they offer focused expertise and strong UK-based support. Their products are specifically designed for our climate.
The G1 is Grant's performance monitoring platform that tracks your heat pump's efficiency, energy consumption, and system health. Both you and your installer can access the data, making it easier to optimise performance and diagnose any issues remotely.
Grant is particularly strong for oil-to-heat-pump conversions, which is their heritage market. They understand the challenges of off-gas properties and design their systems accordingly. Many of their installations replace oil boilers.
Grant Aerona3 models achieve up to 65°C flow temperature, which is sufficient for most existing radiator systems. For optimal efficiency, we'd recommend running at 35–45°C with correctly sized radiators after a heat loss survey.
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Fixed price in 90 seconds. Grant handled. No home visit to get a real number.

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