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I have a Permutit Metered Water softener (from B&Q) and it has been working fine for the last 3 years. Few months ago we let our property and 1 month after the tenants moved in they reported a unacceptable low water pressure if the water is going through the water softener and good pressure when...

Hello, I just bought a new house and the builder told me that the chimney has been lined and it has insulation. When I looked inside up at the chimney opening from the fireplace I can see it is round all the way up. My question is do I need an additional flexible flue liner to be installed to...

Hi All, I have a 2 port Honeywell motorised valve in my central heating which was working fine up untill I powerflushed my system and now when the valve close it cause a water hammer effect (big bang noise in the pipes). The other 2 port valve in my central heating is working fine and...

Hi, I have sealed system with Keston boiler and I have the system pressure set to 1.8 bars when cold (2.4 bar when hot). I know that it is much higher than the recommended 1-1.2 bars but the only reason I’ve set it to be so high is that if I set it on recommended pressure (e.g. 1 bar) I can hear...

Hi, I have sealed central heating system with Keston condensing boiler. I've drained the system recently and refilled it. I've also set my EV pressure to ~1Bar (15psi) when the system was drained. After I've bled all the rads and pump few times I'm experiencing the 0.3-0.4 Bar instant...

Hi, I have MEGAFLO unvented hot water cylinder and I realised that when the vater is heated there is a small leak from either the temperature and PRV installed on the cylinder or the PRV on the inlet pipe. Unfortunately I don't know which one is leaking because they come to the same...

Hi, I have a sealed CH system and I have a valve which I don't know what its purpose (See pictures below) is. The pipe that feeds in to it is the Primary return of the HW but it also can go below, I guess to the boiler. Could you please advice me what is it for and shall I keep it open or...

I have a Keston boiler with sealed CH which I've recently drained and refill for treatment. After flushing the system, adding the restorer and I also added Fernox leak sealer, I'm experiencing the following problem. When the water is Hot (i.e. boiler working) after the pump starts I can hear the...

Hi, After I added Fernox Leak Sealer to my sealed CH system and bled the rads and pump multiple times, every time when the pump starts there is a "water running like" noise coming from the pump for few seconds and the it disappears. Any idea how to get rid of it? PS The pressure is set to...

I have Keston boiler with pressurized CH system. After I cleaned the CH with Fernox Restorer and flushed it then added Fernox Protector, my pump (Grundfos) seemed to get a bit noisier than before (lauder humming noise). I've bled the system several times and it doesn't seem that there is air in...

Hi I have Keston Boiler with a pressurised central heating system. After i've installed recently 5 TRV my system looses pressure ~0.4 Bar/week and it is obvious that the system is sucking air from somewhere. I think that I have a micro-leak in my system but I can't find it where it is exactly...

I have Keston Gas boiler with a pressurized central heating currently set to 1.2 bar. The system is 5 years old and I recently have drained to install 5 Drayton TRV. After running it with Fernox restorer for a week I add Fernox Protector and bled all the rads, pump multiple times (with the pump...