The pressure on our Vaillant ecotec 630 boiler steadily drops and usually sits at around 0.8 cold / 1.2 hot (after being filled to 1.4 cold a fortnight earlier).
Been told that there must be a leak somewhere. Other than 1 radiator valve which leaks a bit, which I have since closed, I cannot see any visible leaks from the radiators or exposed pipework.
1. I have however noticed that 2/3 of the radiators seem to fill up with air quite quickly (the other 10 are okay). Specifically, the towel radiator in the bathroom (about 1/4 now cold only 2 weeks or so after system filled).
Does this indicate that there is a leak somewhere in the vicinity of these airy radiators? Is there an easy way to find out? Really don't want to have start smashing up my lovely new bathroom tiles!
2. I have heard of leak sealant - is this effective/advisable?
3. Been quoted £380 + vat or £89 per hr for a company to detect the leak using thermal imagery , tracer gas, and sound detection. Sounds quite pricey and something I'd wish to avoid. They say they've never failed to find a leak which exists. Is there a cheaper alternative?
4. The system is newly installed sealed unvented - mostly new pipes - although I should add it was not powerflushed by the builders nor was inhibitor added. (Having inhibitor added and a Spirotech filter installed this week.) Would that have any bearing on the above?
Many thanks ..
Been told that there must be a leak somewhere. Other than 1 radiator valve which leaks a bit, which I have since closed, I cannot see any visible leaks from the radiators or exposed pipework.
1. I have however noticed that 2/3 of the radiators seem to fill up with air quite quickly (the other 10 are okay). Specifically, the towel radiator in the bathroom (about 1/4 now cold only 2 weeks or so after system filled).
Does this indicate that there is a leak somewhere in the vicinity of these airy radiators? Is there an easy way to find out? Really don't want to have start smashing up my lovely new bathroom tiles!
2. I have heard of leak sealant - is this effective/advisable?
3. Been quoted £380 + vat or £89 per hr for a company to detect the leak using thermal imagery , tracer gas, and sound detection. Sounds quite pricey and something I'd wish to avoid. They say they've never failed to find a leak which exists. Is there a cheaper alternative?
4. The system is newly installed sealed unvented - mostly new pipes - although I should add it was not powerflushed by the builders nor was inhibitor added. (Having inhibitor added and a Spirotech filter installed this week.) Would that have any bearing on the above?
Many thanks ..
