Free Air Source Heat Pump Grants
Understanding Air Source Heat Pumps
Air source heat pumps are highly efficient and utilize the heat in the surrounding area to heat the rooms. Compared to old heat pumps, modern ones run with little energy as they present heat to warm up your rooms. Air source heat pumps consist of two units; the indoor unit and the outdoor unit.
Boiler 20+ Year Old
Boiler must be non-condensing
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For Homeowners


How does an Heat Pump Work?
We’ve previously established that an air source heat pump comprises an outdoor unit and an indoor unit. Some sub-components help in producing the warmth you need in bone-chilling winters. Here’s what you need to know about the air source heat pump mechanism.
- Outdoor Unit The outdoor unit comprises a fan and a coil. The function of the coil is that of a condenser or an evaporator. Air from the surroundings is blown from the fan to facilitate heat exchange.
- Indoor Unit An indoor unit, also called a handler unit, contains a fan and a coil. The coil works as a condenser and an evaporator. Whereas the fan helps in transporting air across the coil to the ducts in the home.
- Refrigerant Refrigerant is a substance that soaks up and rejects heat as it transports throughout the heat pump system.
Our Certifications and Awards
ECO4 Grant: Your Ticket to Green Savings!
The ECO4 Grant is a government-backed scheme that makes installing an air source heat pump even more affordable. Berks Insulation is an approved ECO4 installer, meaning we can help you navigate the application process and secure up to £7,500 towards your new heat pump! ECO4 (Energy Company Obligation) replaced ECO3 on 1 April 2022 and will run until March 2026.
This government supporter scheme aims to reduce household carbon emissions, alleviate fuel poverty and improve energy efficiency in UK homes.


EPC Ratings
An Energy Performance Certificate (EPC) is like an energy label for your home, grading it on a scale from A (highly efficient) to G (inefficient). The lower your EPC rating, the more energy your home wastes and the higher your bills.
To qualify for a free boiler grant under ECO4, your property must have an existing EPC rating of D (lower), E, F, or G. This means homes already struggling with energy inefficiency are prioritized.
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