hot water

Hello All, Just wanted to get some feedback on a system design I came up with. I understand that in a vented system the water in the tank should remain below 20 degrees to prevent legionella but it never made sense why you would route the hot water vent pipe back into the tank. I took...

Hi, Just bought a new copper cylinder and looking inside, the central heating coil is rippled. From what I understand ripples are bad and can result in erosion over time. Since I want this cylinder to last 20 years would it be better to return it? Am I making something out of nothing? Thanks...

Hi there, I moved into a "second hand" new build just over a year ago. It has a large unvented Kingspan hot water cylinder in the airing cupboard. Last year I had the boiler serviced and my plumber noticed the tundish in the airing cupboard was dripping. He order a replacement valve of some...

Hi, I have a copper immersion heater which heats water for my hot taps, bath and shower. It is in a second floor flat and uses a seperate water pump. Both are plugged in on the same dedicated circuit. I want to update the water heating system so that I have hot water on demand. Currently I have...

System: Condensing Boiler downstairs, and hot water tank upstairs, with an external pump and expansion vessel. Closed S type system. 11 radiators in the house The heating is on a timer for a few hours in the morning and a few hours in the evening during the week and all day at the weekends The...

Hi all, I have got a new Vaillant EcoTec 418 installed recently and noticed that the set hot water temperature is being ignored, instead it gets generated by flow temperature. Also diagnostics menu says that DHW hours are 0. Could this be a result of an incorrect wiring? I'd like to set DHW...

Hi all, I wanted to get your thoughts on a couple of options for a small flat in a mid-terraced house. We currently have an old electric immersion heater and were looking to update. We have no gas supply and currently the heater supplies hot water to three sets of taps (kitchen, bathroom sink...

Hi all, I have just moved into a rented property and it have a unvented heater tank for the hot water. I am getting no hot water at all and just wondering if the knotches on this timer dial need to be in or out for it to be on? I suspect the timer is broken as when I set the current time it...

Hi, not sure if this is the right forum but I’ve just moved into a rented flat and we only seem to get hot water if we put on the boost for an hour, I have attached pictures of the boiler and just wanted to check that the hot tap was actually turned on and all the valves and things are on the...

We have a regularly WB boiler (with a Megaflo for HW, 14 rads mainly with TRVs and Wiser controls) and are having 2 distinct problems. Firstly, must add that following a misdiagnosis by BGAS about 3 months ago WB came out to check the boiler and it was fine then - it was subsequently serviced...

Hi, I currently have a combi system and would like to increase the water pressure for all outlets (mainly shower). I have been looking at the stuart turner mainsboost flomate mbf 12 as this states it increases mains pressure by 1.5bar...

We have gas central heating in our house for the radiators. We have a separate annexe and I want to pass the heating hot water to that building to supply a couple of radiators. If I pass a pipe between the two buildings, it will pass 1metre which is outside and above cover so needs to be...

A biasi boiler, which was working fine few daya ago. Then suddenly no ch, and giving very hot water. Temp goes upto 70c Cleaned pump, changed diverter valve rubbers, cleaned heat exchanger. Pump cleaned, is working but feels hot. After cleaning secondary HE, the hot water is not working...

Hi all As title, noticed water moving noise when on the loo and nothing was using water. Turned the stop cock off, it ceased. Started again when stop cock opened. Have checked all taps and pipes I can physically get to, no leaks. Went to the boiler (Worcester Greenstar Combi) and on...

Hi, I have an unusual question. When I switch on my hot tap, am I right in assuming that the hot water will be delivered solely to my hot tap? even though the path of the hot water may pass through multiple tee’s on the way (which will have cooled water at their other connections). I expect the...

Hi folks, I’m facing an issue and I’d appreciate your help. I have a conventional (gravity fed) central heating system with a water tank in the loft, a hot water cylinder and a diverter valve in an airing cupboard. My issue concerns my bathroom radiator and when it gets hot. It’s like this...

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...

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...

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...

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 /...