Air Source Heat Pumps lower your EPC rating.

Here is an example of 2 draft EPC’s that were done on the same property.

The only difference is that the first one uses a new Mains Gas Condensing Combi Boiler, and the second one uses a new Air Source Heat Pump.

The new Air Source Heat Pump is 8 points lower.

You can find out more about Air Source Heat Pumps Here.