Affordable heat stores will work with any heat pump. When using a heat pump, our technology works independently of the heat pump, allowing your heat pump to work better.
In designing an air source heat pump system, all air source heat pump systems have a hot water cylinder for potable water. The standard hot water cylinder normally fitted with an air source heat pump holds 300 litres, has an internal coil, and costs £2,000. Mixergy has 250 litre tank, with an external plate mix exchanger, and costs £2,000.
Our cylinder is 210 litres, stores twice the energy, and costs £500. You will also have the advantage that it can be used as a smart and connected device which can store energy one week and use it the next, store low cost and free energy when its available, and help balance the energy network. If you generate your own PV electricity then this can be diverted to storage whenever you want.
Air source heat pumps may need to increase the volume of water in the heating system by adding a buffer tank. Buffer tanks should hold approximately 15 litres of water for every kilowatt of heat pump capacity. For instance, a 10kW heat pump would ideally be paired with a 150-litre buffer tank.
Only an affordable heat store gives you a super-efficient heat store that adds energy storage to an air source heat pump system, as well as providing the potable water hot water cylinder essential for every home.
In order to qualify for the Boiler Upgrade Scheme “the new heating system will be capable of meeting the full space and water heating needs of the property, and it is designed to do so” also “ all heat-generating components of the original heating system will be replaced (where applicable, you may retain circulation pumps, solar thermal collectors, wood-burning stoves, and supplementary electric heaters, including immersion heaters)”
Many air source heat pump systems that qualify for the grant include immersion heaters as a backup or supplementary heating source for domestic hot water. The immersion heater can be integrated to ensure a consistent hot water supply, especially during peak demand, or added if the heat pump is unable to reach the desired temperature.

