Air source heat pump replacing costly oil fired boiler. Best purchase ever. Saving over £2,000 pa on oil and £26 per month on boiler maintenance. Electricity bill only gone up by £1,000. Home is much warmer throughout the day, which is ideal now my wife and I are retired and spend a lot more time at home during the day. Found the company to be very professional, helpful and knowledgeable at all times without being pushy. We were dealt with by Mark Roper and all times we found that he had our best interest at heart.