Yes, without swearing, they’re dire. Some on here rave about them and haven’t had issues. We fit them (unfortunately) as my boss thinks they’re good boilers. Yep, some are loud, others (I’ll give credit here) are extremely quiet. I’ve replaced several parts on boilers that are only 2/3 years old, some less than that, and parts ain’t cheap. I know they’re not big in Scotland as a mate has told me. We’ve had issues with some Honeywell thermostats too, I know these aren’t to do with intergas, apart from the range fitted link up direct with the boiler.