It would be the same or more if he had gas.
I suspect its not a small house.
Steve, a company director from Harlaxton, Lincolnshire, who started using the system in July said: “The equipment cost £17,000, then there was the installation so add another £10,000 at least.
Thats not a small heat pump. Ours installed was £7,000 and the bills are £2000 p.a. and the house is set at 21 degrees, as its rental.
