central heating

Hi everyone, I'm new to the forum! I recently purchased a three-year-old house which, as I understand it, is still under the 10-year warranty with Barratt Homes (the builder). I’ve recently discovered a leak on my dining room radiator. It’s only a small dribble leak, but it’s enough to affect...

Hi All, I have a leak coming from the Heating Coil flange on our HW Cylinder. Long story short if I replace the Cylinder which is 25 years old I may as well go unvented and replace the boiler and power showers (not compatible with mains pressure water) also. The costs are obviously significant...

Hi, I have a Honeywell CM927 thermostat that's at least a decade old. Some of the buttons are starting to only work intermittently, so I'm looking to buy a replacement. I can see a few models online that claim to be a replacement for the CM927, but they all seem to come with a receiver. Is it...

I am trying to repressurise my boiler, this has previously been a routine task but the process I would usually follow isn't working this time. I have attached an image of the pipes and valves. Previously I would need to turn the blue and black valves nearest the loop, but this is not working...

Hi all, Firstly apologies if this is something already covered; I did search the forum prior but couldn't find anything specific that replicates the issues I'm having. System: Gravity Fed, cold header tank in loft. Boiler: Worcester Bosh Greenstar 15Ri Pump: Archergas 15-60/130 – fitted...

Quick question, out of the two boilers below, what would you say is the better and more reliable one? 1) Vaillant ecoTEC plus 940 Boiler 2) Viessman Vitodens 111-W Boiler 3) Or how about the Vaillant EcoTEC Pro 24 which is not a storage combi, but has the "aquaCOMFORT System" which is...

I moved into a house in November and therefore regularly used the heating so didn’t notice this issue. However now that we are in June, we almost never have the heating on, and we are not getting hot water. We have 2 slides on the thermostat for hot water or heating, we therefore put the hot...

Hi all. Does anyone know if there are any combi boiler that can heat both the hot water and the radiators at the same time? I know most don't, but was wondering if there was any exceptions? I can't see why this would not be physically possible as you could have a diverter valve in the boiler...

Just a question, what happens if a live current goes down the orange wire on a not energised (position W) drayton mid position valve, not as an output but as an input?

Hi All. I have a S plan system where the boiler serves underfloor heating, cylinder and radiators. For some time now, we have had this loud noise when the hot water 2 port zone valve stops, i.e when the stat tells it to stop, we have a loud clambering noise that always wakes us up, and my next...

Hi all my boiler is losing pressure. It seems to be only happening when we use the central heating which suggests that its a leaking component in the system. Thing is this has been going on for a year or so ( we tend to use the log burner rather than the ch) so I would have thought if it was a...

Good afernoon, I recenlty extended the house and added a small area of UFH to the main heating (radiators) system. Since the installation, the boiler randomly overheat and shut down. This only happens when the UFH starts, mainly in the mornings and especially if it starts at the same time as...

Hi, I have run into some issues with my heating over the past few weeks. I have a Viessmann Vitocal 222 with heat pump system, the hot water seems to be working fine at 45 degrees but the heating isn't getting any hotter than 32 Celsius. The radiators are barely getting any warmer than if the...

I've moved into a house with very basic central heating controls (one of those timer dials from the 80s) and non traditional piping set up which is causing some complications and I want to do the minimum work at the minute to modernise it. The way they've piped up the house the boiler sits...

You may ask why I would want such a thing. Our home central heating comes on at 4.30pm. But we don't need to heat the bedrooms until 9.30pm. that's 5 hours of wasted energy every day. If we could time the thermostatic valves to come on at 9.30 it would solve the problem. I know I could install a...

Hi, I just moved into a new house (built 1996) and struggling to work out why I have two circulating pumps on a vented central heating system with open vented hot water cylinder. Circulator 1: Permanently running (even when the boiler is not running) and is hard wired to an on/off switch...

Hi, I am looking for some qualified advise here to deal with a 'noisy' radiator issue (not because of air .. but because of a high flow of water through the radiators due to heavy pump installed by the engineer. It all started when I got new boiler and plumbing done recently as part of house...

Hi, Here's the issue, I've been in the house ever since i was born( 28 years), and we've never had radiators downstairs Hot when the central heating is on, only the upstairs.( Strangely its all radiators downstairs with the issue) The system we are running is an Ideal Mexico Boiler, expansion...

Hi all . I have just noticed that the bleed valves on a lot of our radiators are on the same side as the TRV's - some other radiators have them opposite the TRV/Flow side but majority on the TRV side. Does it matter where the bleed valves are positioned on CH radiators? I would have...

hello all can I have some advice / experiences please. if a radiator is cold/colder than the others on the system would I be looking to open the return lockshield valve more, or less? all rads have thermostat valve (TRV's) on which is turned up to highest (5) and radiators all bled so its no...