I've asked for photos of his & the other engineer's certificates, to include his public liability insurance, which I suspect may have lapsed (I've been doing some digging) & he says he will send them Tues as he's away for the w/end. We've got quotes to get the pond sorted & it's best part of £1k.Ask him for the engineers qualification certificate if you want to tbh I wouldn’t want them back
The incorrectly installed combo block/ prv unit seems the worst issue, so far. Could you just explain that a bit more please? We're not heating the hot water & worried to even turn the tap on!