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Grant Aerona Heat Pump Review 2026

Grant is a UK-focused manufacturer with heat pumps designed for the British climate. Our review.

📅 ⏱ 5 min read Last updated:
Myles Robinson, Founder of UK Heat Pump Servicing

Written by , Founder, UK Heat Pump Servicing

Myles Robinson founded UK Heat Pump Servicing, the trading name of Home By Eight Ltd, to give heat pump owners across the UK a single nationwide point of contact for annual servicing, fault diagnosis and repair, cover plans and new installations. The guides published here are written and maintained by Myles with input from the company's MCS-accredited engineering team, and are reviewed whenever grant schemes, prices or manufacturer advice change.

Rural outbuilding with a gas cylinder beside the door

About Grant Engineering

Grant Engineering is an Irish manufacturer with strong UK presence, historically known for oil boilers. Their Aerona range is designed for UK and Irish retrofit applications.

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Aerona4 R32

The current Aerona4 R32 achieves SCOP up to 4.08. R32 refrigerant offers a better environmental profile than older refrigerants. Good UK installer support network.

Our Verdict

Solid, practical choice — especially for oil-to-heat pump conversions in rural areas. Good installer support and UK-focused design. Strong choice for replacing Grant oil boilers.

Related reading: brand rankings, comparison table, annual servicing and holiday cottages.

Sources: Grant UK and MCS certification.

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