Air source heat pumps are being used by UK households to provide home cooling, according to data from the Microgeneration Certification Scheme (MCS). While traditionally installed for heating, these systems can move heat energy out of a building.
How Heat Pumps Provide Home Cooling
A heat pump functions by transferring heat energy from one location to another rather than burning fuel to generate warmth. In cooling mode, the system extracts heat from the interior of a home and releases it outside. Andrew Ingram, who lives in Maidenhead, Berkshire, reports that his air-to-water system can lower indoor temperatures from 35C to 21C. The system utilizes “emitters,” such as radiators or specialized fan coil units, to circulate cool air or water throughout the property.
Did you know?
The government has updated permitted development rights to allow heat pumps to be used for cooling. To qualify for funding, the heat pump must be certified through the Microgeneration Certification Scheme.
Government Grants and Financial Support
Financial incentives are available to assist with the cost of installing heat pump technology. The government’s boiler upgrade scheme provides grants of £7,500 for air-to-water or ground-to-water systems in England and Wales. Households not connected to the gas grid may qualify for an additional £1,500, bringing the total grant to £9,000. The government is to offer £2,500 grants for air-to-air heat pumps, which cost about £4,500 to fit in a flat or small house.
Performance in Extreme Weather
Research conducted at the University of Salford’s Energy House 2.0 facility demonstrates the effectiveness of heat pumps in mitigating overheating. In a climate-controlled chamber simulating 32C external temperatures, scientists paired a heat pump with fan coils in a modern home. The system maintained indoor temperatures between 19C and 24.9C. According to Prof. Lubo Jankovic, the scientist leading the research, these findings demonstrate that reversible heat pumps can play an important role in protecting future homes against overheating.
Managing Costs and Energy Efficiency
Energy bills remain a concern for homeowners. Because heat pumps operate on electricity, which is generally more expensive per unit than gas, the Energy Saving Trust notes that costs can be higher on standard tariffs. To maximize efficiency, the Trust suggests heat pump users moving on to a time-of-use tariff can save about £330 a year. Integrating solar panels and battery storage can further reduce costs, as seen in the Ingrams’ setup, which allows the heat pump to run on free or very cheap electricity.
Pro Tips for Heat Pump Maintenance
- Condensation Control: When pumping cool water through a property, condensation can occur. Pipes should be wrapped in sophisticated trunking or have them outside.
- Visit a Home: The charity Nesta operates a “visit a heat pump” scheme, which offers tours of more than 1,200 homes.
- System Compatibility: Consult with installers about the system design.
Frequently Asked Questions
Can any heat pump provide cooling?
To qualify for funding, the heat pump must be certified through the Microgeneration Certification Scheme. Reversible heat pumps can provide cooling.
Is cooling with a heat pump expensive?
Running costs depend on your energy tariff. Research at the University of Salford showed cooling cost £2.50-£3 a day, though using solar panels and battery storage can lower these expenses.
Do I need planning permission for a cooling heat pump?
The permitted development rights rules have been updated to allow cooling.
Are you considering a heat pump for your home? Explore our guide to green energy tariffs or share your experiences in the comments below.
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