I have a 3 year old oil fired combi boiler (Worcester) in a new house, when it was serviced in December the engineer showed my that the water pressure was low and how to top it up. I monitored it closely and am now topping it up twice a day: I top it up to 1.5 bars and within 12 hours it's on O, I also don't have enough hot water to run the shower twice in quick succession which I don't understand because I thought a combi boiler meant unlimited hot water.
So I spoke to the boiler engineer who told me that there is nothing wrong with the boiler and advised me to bleed all the radiators and if that didn't work it meant I have a leak in the pipe work to the radiators therefore not his problem. I have a large house covered in very expensive flooring/carpets etc and all pipe work runs under the floor 😫. Needless to say bleeding the radiators didn't work, finding anyone to do anything round here is virtually impossible, so in desperation I paid a leak detection company to come and find it, 4 hours later including draining the central heating down and putting some sort of gas in and £900 worse off due to the distance they had to travel to get here (I'm very rural) they are 99.9% sure there is no leak in the pipe work in the central heating and the problem lies in the boiler itself. He cranked the heating up to max and ran it and the pressure in the boiler actually went up to 3, he then turned the CH off and ran the shower and the pressure dropped to 0 immediately there is no leak in the shower pipe work.
I'm annoyed that I paid £900 to be told that I don't have a leak and feel the boiler engineer should have looked more carefully at the problem instead of just dismissing it and saying there is a leak in the CH especially knowing how difficult it would be to find it. Do I have any come back? He is a corgi registered engineer.