hot water

  1. I

    Potterton Powermax HE 85 CP not switching on

    I have a Potterton Powermax HE 85 boiler, which is about 15 years old. This morning I noticed the boiler was off so I checked the house electrics to make sure there was no trip switch activated - there wasn't. I am insured with Baxi who are visiting next Thursday to repair and do a service...
  2. M

    Help understanding why I'm not getting enough Hot Water for a full bath

    Hi all, I moved into a new house earlier this year, so this is the first winter. The house is approx 25 years old and has the original (system) boiler with HW cylinder (serviced each year). When we first moved in we had plenty of HW. However, since winter has come along and we have had the...
  3. Doc_Jam

    Unvented cylinder constantly dripping (Ed.)

    Hi All Hoping for a bit of plumbing help. Our tundish is always dripping. It always (and I mean always) drips, 24/7 but since the heating has been back on its more like a flow of water as pictured. I assume its an overflow from the hot water tank but I dont understand why it would always be...
  4. B

    Water hammer when hot water comes on, following heating.

    I'm experiencing a water hammer when my hot water comes on, following on from the heating. My hot water is on a timer, to come on twice a day to fill a hot water tank. If I have my heating on in between, then when the hot water come on there is a nasty, loud water hammer. The hot water /...
  5. L

    Worcester Bosch 37CDi upgrade ?

    I have a 12-year old Worcester Bosch 37 CDi. The house has been extended (loft extension) a few years ago and it now has 7 double rads and 9 single rads all together. I've been told this is quite a lot for that boiler. We don't use much hot water because we have an electric shower and kitchen...
  6. A

    Viessmann vitodens 50 hot water issue

    Hi. I have a viesmanm vitodens 50 but I've noticed it's behavior change recently I think. When running a bath for example, the boiler will fire up and start providing hot water as expected. The temp on the boiler display climbs steadily to about 85 degrees with the burner indicator showing 5...
  7. N

    Loft shower controls hot water for house?!

    Hello. So I’ve recently moved into a 1900’s terraced house with a loft conversion from 2001. The shower in the loft is either scorching hot or Luke warm. It also had problems with being jammed stuck until I loosened it with WD40. However, as it’s the loft, it’s not a priority (I imagine a...
  8. M

    System boiler - should HW automatically come on when CH is turned on?

    Hi all, I moved in to a new house earlier this summer which I believe has a system boiler (I'm used to a regular boiler in my old house). The HW is programmed to come on twice a day. This week (as I am sure a lot of people have :)) , the CH went on for the first time. I noticed that when the...
  9. C

    Baxi boilder pressure drop and then returns to normal?

    Hi, I have a baxi duo tec 24 and its started having some weird behaviour. When I run the hot tap the pressure drops and it making a really quiet high pitch whistling sound. The sort of sound that would drive teenagers and dogs mad. No error codes and all work fine. Just want to know what checks...
  10. X

    Hot Water Only Warm in Bathroom

    Hi there I moved into a flat recently which uses a HIU for hot water and heating. I found that in the bathroom there is only luke warm water coming from the basin mixer tap and the thermostatic shower mixer. The kitchen is fine however so that tells me the HIU and water coming out is fine as...
  11. HomerJay99

    How does the DHW supply in a normal house work?

    I’m having the usual constant vs timed hot water debate with myself and just need to know how the tank behaves when supplying water. As far as I understand (and I’m probably wrong), if your DHW is timed, the boiler will come on and heat your water to 60C and go off. If you then go and have a...
  12. L

    System boiler has lost pressure after temporarily taking down radiator

    Hello, We recently took down a radiator temporarily for paintwork. (We have an Ideal Logic System boiler with hot and cold water tanks in the flat, if useful to know). We re-fixed the radiator this morning but now have no hot water or central heating. We have an F1 error message - all water...
  13. L

    Combi boiler AND 2x water tanks??

    Hi everyone, wondering if I can get some advice We have purchased and moved into a one bed flat which had a combi boiler and central heating system installed in 2014. For some reason though, we have an airing cupboard in which there is a massive cold and hot water tank. We think the water...
  14. I

    Direct Unvented hot water Cylinder Question

    Hi There, Wondered if anyone can help me work out how exactly my boiler works and how to use it efficiently to save money after some quite costly bills. I have a Santon Premier Plus Unvented hot water system as well as a slimline Amptec Electroheat boiler (C400) alongside. I'm pretty sure the...
  15. J

    vaillant ecotec plus 630 hot water issue

    I have a vaillant ecotec plus 630 boiler. The hot water is not working correctly. Sometimes HW will come on when programmed but not always. HW does come on when the heating and hot water are both programmed to be on. HW is now coming on when the Heating is on but HW should be off. I can...
  16. G

    Unvented cylinder loses heat super quickly

    Hi guys Great forum. I have an unvented cylinder which is a Telford Tempest 250 litres with external expansion vessel, which we have the hot water on from 6am - 10pm (gas boiler). But within 2 hours of the hot water going off, the water from the cylinder is stone cold. If I turn off the hot...
  17. S

    Grant Oil Combi Boiler Hot Water Efficiency

    Hi, We have just had a grant vortex oil combi boiler installed and we have two options to heat our hot water; we can have the water on continuously which will keep the very small water reserve in the boiler at a certain temperature. Or we can have the hot water off and then just boost it when...
  18. J

    New Boiler system sending bills sky high. Help with right setting

    Less than a year now. Got new plumbing system with Atag I40s system boiler with unvented cylinder 210l. Compared to the previous old vented system the gas bill seems to have double out. Plumber set up hotwater to 65° and heating to 70° Can you please advise if the hotwater can be keep lower...
  19. N

    Y system vented indirect - No hot water

    Radiators are totally working fine.. equal heat bloom on the Thermal imaging camera, but it shows the hot water is only getting halfway from the pump.to the cylinder, even when 3W valve is both positions All 3 Radiators are all hot which proves flow from pump to 3W valve port A to rads and...
  20. N

    Another combi boiler hot water problem

    I was wondering if anyone had a suggestion or idea that may help. We have a Baxi Duo Tec 33 erp, which is about 5 years old, and working absolutely fine until last week. The central heating is working perfectly, however, when you turn the hot water on, after a few minutes (long enough to fill a...
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