hot water

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...

Hello, Apologies if this is a stupid question, there's a bit of a story to this. So, back in April I noticed that our hot water was temperamental, you could draw some at 10a.m and it would be fine, at 11a.m it would heat up briefly before running cold. I looked at the LCD display when this...

Hi… I have an old Vaillant Ecomax 824/2e that is making some very hot water! The water temp gauge is set to 50 degrees Celsius (on the lcd display on the boiler - the dial is about half way between coldest and hottest). However, when I turn on the top tap fully, the reading on the same gauge...

Hello all I'm returning to DIYNOT after a long hiatus and lapsed account. As ever, I only come on here if I want to know something or (as in this case) to reaffirm a decision I am about to make. I'm in the process of buying a one bedroom first floor flat, built c.1990. It's on E7 supply...

I have just bought a house with a Vaillant ecoTec 637. The previous owner had some terrible Honeywell system installed but took all the controllers. So I can’t control the system, and in particular I can’t get the hot water on, no matter what I do. I had previously used a tado system, so I have...

Hi, I have an issue with the hot water supply to our new bathroom which has stumped a couple of plumbers and a builder, short of spending a lot of money for something that might cause more problems. I'll try to explain it clearly and would be grateful for any ideas: We live in a 200 yr old...

Having moved into a house with a Rayburn it's an ongoing battle. Latest is that I thought simply switching from "Heating/Hot Water" to "Hot Water" I would continue to have hot water (heated up at the previous central heating times). Not so much. - I have a separate wireless Honeywell thermostat...

Hi, Summary: I am looking to buy a replacement battery. Does anyone know where or how to find one? I believe this is the problem. I changed the tank to a thermal store. I left the Horstmann switched off at the mains ie no power to charge the battery, for several years. Apparently they won't...

I hope someone can help with a perplexing problem I'm having with my hot water system. I have a Worcester outdoor oil boiler. My hot water schedule is set for 6am to 10am and 5pm to 10pm. The boiler will always come on at 6am and at 5pm, but it is not able to keep the water up to temperature...

Hi Can someone please offer advice on which water pump to pick? It'll be for the hotwater to the bath and a downstairs shower room, the cold is on mains and the upstairs shower is electric. We have a hot water cylinder at ground level (about 5m away from the original wall of the house) which...

Hi, first post. Engineer is booked for 5th of June. But just would like some clues. I’ve read the other posts and the zone valve is likely culprit still. ch fine Zone valve for hw doesn’t move I do hear a click in the nest heat sync when I choose hot water. If I open and lock the zone...

We’ve heard a loud noise from the pipe work above the living room recently like a tapping when the hot water comes on. Sound file https://sndup.net/7z8c Is this normal?

Greetings all. I'm after a bit of advice as we have an issue with our HW kettling and on closer inspection the wiring on our 2-port Valves looks a little suspect to my untrained eye. Background: The house was built in 2001 and has an 'S' CH/HW System installed. If the HW is on and the CH is...

Hey all, this may sound like an unusual question - I asked here about my particular setup before and people here helped me understand it, so now I have a concrete (DIY) plan here and need a sanity check. I have a Danfoss TP9000 thermostat for both my hot water and heating. However, the heating...