Air Source Heat Pump Resources

Do you need new radiators when installing an air source heat pump or will old or existing radiators suffice?

When heating with an air source heat pump it is important to understand low flow temperatures - and if you have low temperatures then you need a larger surface area. Compared to where a traditional radiator system warmed using gas boiler central heating you would have flow temperatures of around 75°C - however air source pumps have a lower flow temperature of around 35°C to 45°C. Underfloor heating is arguably the best solution in combination with a heat pump, which is why they an installation in a new build is a no-brainer - but in existing homes looking to save money and reduced carbon emmisions , through where when certain floor coverings, such as thick carpets, and those with solid, uninsulated floors, this is not always feasible. So radiators, old or new, will need to have larger surface area to allow the heat to transfer effectively around a room. Below are a few frequently answered questions as to what to consider, if you will need to replace
your radiators when installing.

Click on each consideration to find out more

Common misperceptions about air source heat pumps explained