Heat Pumps Now Cool Homes in UK Heatwaves

Many UK homeowners are discovering that heat pumps offer a novel solution to combat overheating during summer months. These systems, typically used for heating, can also be reversed to provide cooling, transforming homes into cooler sanctuaries. Andrew Ingram in Maidenhead reported achieving a 14C temperature drop indoors during a 35C outdoor heatwave.

The government is supporting this transition with grants. In England and Wales, homeowners can receive up to £7,500 for air-to-water or ground-to-water systems, with an additional £1,500 for those not connected to the gas grid, bringing the total to £9,000. Scotland offers interest-free loans or grants.

Research from the University of Salford's Energy House 2.0 facility demonstrated that reversible heat pumps, paired with fan coils, can significantly reduce overheating in modern homes. In tests simulating 32C external temperatures, indoor rooms remained comfortably between 19C and 24.9C.

Previously, cooling-enabled heat pumps required planning permission, but updated permitted development rights now allow for their installation solely for heating or cooling. This change, alongside new grants for air-to-air heat pumps, is expected to boost their adoption.

While upfront costs and energy tariffs are considerations, integrating heat pumps with solar panels and home batteries can optimize savings. The Ingrams utilize solar power and a battery system, allowing their heat pump to run on free or very cheap electricity, significantly reducing operational costs.