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I have a Vaillant ecotec plus 637 boiler installed about 5 yrs ago as a S plan plus unvented installation. Question I have is the room stat is 1.5C below the set level (20C) but the boiler flow temperature is around 42C when the target is set at 60C. The boiler is oversized and I set the power...

Some background. Went from vented to unvented system 5yrs ago when I added an extension to the house. I have 15 radiators and underfloor heating. Boiler fitted was a Vaillant Ecotec plus 637. It's a 3 port valve system for heating, hot water and underfloor heating. Water cylinder is 290 litres...

I have an existing Risco alarm system which include 3 wireless internal detectors upgraded 4 years ago. My alarm company doesn't 't want to maintain them anymore because they are out-dated and want me to upgrade again. Can't afford that right now but need to replace the batteries ( they were...

Old Villeroy and Boch cistern had leaky donut seal ( see pictures below). Replaced donut seal with 2inch seal from Villeroy and Boch. Noticed the seal rested on the outer lip of the toilet bowl ( second picture) so the cistern was slight raised by a few mms. Didn't think this was an issue once...

Replaced old Geberit valve ( see pic below) with a new one as I was renewing a failed doughnut seal and decided to replace everything after 22yrs. I noticed I get water hammer with the new old but when I put old valve back on, it works ok with no water hammer. Is there some adjustment I need...

I'm trying to lift cistern away from wall but angle valve supply in the way. I'm assuming I can't rotate the angle valve arm and the only answer is unscrewing the nut to the right of the angle valve. Any thoughts/advice appreciated.

Replacing a cistern and the wingnut is in a tight space. Tried WD40, mole grips but wingnut won't bugde, just spins when I turn the screw in the cisterne. Any suggestions on how to remove anyone? (see pictures)

8 months ago I had some plaster water damage from leaking window seal (see picture below). Leak has been fixed and I let plaster dry out over the summer. Not sure the best way to paint the plaster. Do I apply sealer or I do I mist like new plaster before applying another coat? Any help...

I'm replacing a fill valve and noticed a small constant drip after removing old fill valve - see picture ( plugged with green tissue). It's been dripping for a few days. I'm trying to figure out if this constant drip is something to worry about or it goes away when I fit new fill valve as valve...

Need some help figuring out if I can isolate the cold supply using the angle valve in picture below - I don't have stopcock in house so alternative would be to to switch off from the road

I have a leak from a toilet waste pipe when I flush. See attached picture. Looks like leak in the middle of bellows. Can I get away with taping up or do I need to replace? Thanks in advance for any suggestions.

Kitchen mixer tap is stiff suddenly. It is 16 yrs old. Not sure how easy it is to fix or whether I should just buy a new tap. Would appreciate any advice. Thanks

I've just cleaned the spirotec filter. System pressure is 0.1bar. Question I have is can I top up my radiator with an inhibitor without draining radiator as pressure seems so low already.

I have some kind of damp patch appear on wall plaster on 2nd second floor bedroom. The plaster has flaked off. The bedroom was decorated 3 years ago. The patch is near a radiator so I thought pipes might be leaking. Had the heating system checked and it's ok. The wall is below a window sill so...

I have 3yr old unvented system with a Vaillant 637 Ecotec plus boiler. The heating system was upgraded from a vented system as a part of a house extension which included extra underfloor heating, a larger 300L cylinder and a new vertical radiator in the bathroom directly above the boiler. When...

I have a downstairs blocked toilet. Tried plunger but no joy. Water does drain away slowly over many hours. When I flush toilet directly above on next floor notice downstairs toilet filling up. Not sure whats going on - next step will is to get a flexible coil from Wickes use it on downstairs...

General question to Vaillant engineers - is it possible for the boiler to create air bubbles in a sealed system. Reason I ask is i'm bleeding air from the same radiator every night for the last 2 weeks. It's a new vertical radiator on the floor directly above boiler. Wondering if installing...

Before I ask my question some background on my heating system. Installed Vaillant 637 Ecotec boiler two years ago when I had my garage converted into a room. Had underfloor heating installed into garage and a new vertical radiator installed in room above. Went from a vented to unvented system...

Boiler goes into anti-cycling mode for a few minutes at the end of each cycle after pump over-run. Does anyone know if it's normal or whether I need to make adjustments to my heating set up

I have a Vaillant Ecotec plus 637 boiler fitted 2 years. I also went from a vented to unvented hotwater system and had underfloor heating fitted in a converted garage. I understand the pump overrun is supposed to protect the boiler heat exchanger from damage but where does the heat go? Reason I...