Don't have your install done by British Gas
Had an air source heat pump and 15 new radiators fitted in April. The guy who came to do the survey asked me twice if I had my partners permission to have the install done, which was a personal gripe but apparently the beginning of much worse problems.
Install which should have taken one week took 2, so that was 2 weeks without hot water, with 2 small kids. Not a lot of fun but we managed.
Then one of the radiators installed was faulty and didn't work from the start, needed replacing. That happened over 4 weeks later. Luckily the rest worked and didn't really need the heating on.
The radiators downstairs weren't getting very warm, the engineers tried rebalancing but he said the pipes going to the radiators were too narrow. Bearing in mind they have known the size of the pipes since the survey, and the size of the radiators needed. Surely that should have been taken into consideration.
Since beginning of May, the engineer has been saying he will speak to his manager to see what they can do. I've messaged his several times and called british gas themselves and 2 months later, he has now said his manager isn't around and basically it's not his problem any more and good luck. British Gas keep saying they will contact the manager but nothing has happened and I'm ringing them every week with the same response. I've put a complaint in through British gas and will be putting one in with ofgem. So much for their warm home guarantee. I'm stressed and sad and worried my home won't be warm in winter.