hot water

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

Hi, I think we have had this issue since we moved into our house about 6 years ago. I've adapted how we heat our hot water (set to short periods and times of day) so it hasn't effected us much but after looking into this further I think there is seriously something wrong with our system. Basic...

Hello, Hoping someone can help! Not sure what else to try. We have a Vaillant eco tec boiler and we also have a Vaillant auro stor water heater, but for the last two months all of our hot water is coming out Lukewarm. When we first moved in it worked perfectly and the water was super hot. Our...

Hi All, I posted on this subject back in 2018 and never really got to the bottom of it! But I have an issue where air seems to be trapped in the heat store/exchanger on the hot water side of things. It fizzes and gurgles, knocks and bangs in various degrees of loudness and frequency. At the...

We need to install a HW recirculation pump and circuit in our Village Hall. There is a very long draw off from the HWC in the loft to the furthest tap in the Doctors Consulting room handbasin. As a result the water does not reach 55 degrees C within 1 minute which is the requirement for our...