central heating

Two Nest 3rd generation units (PDF) need to be installed for dual zone central heating (but not hot water) with one in the living room (zone 1) and one in the hallway for rest of property (zone 2). The combi boiler is an Ideal Logic 35 which is wired as follows: I have situated both Nest...

Hello One radiator in my house is always hot even when the TRV is turned to 0. If you turn it to 5 it is boiling. When the central heating is off then this radiator is cold. The rest of the radiators works as expected, i.e. if you turn the TRV to 0 it becomes cold. I've taken the TRV off and...

The pump in my system is behaving strangely. Normally it indicates that it is running at about 43W. Since Xmas morning, it has only been at about 18W. When it starts up, it goes up to 45 for a few seconds and then back down 3 or 4 times. Added to this, it worked perfectly for a time yesterday...

can anyone help i have no hot water I've tryed the valve moving little handle but not working i have the water tank in loft

Regarding: Clean sealed central heating system, powerflushed and inhibitor added a few years ago and system water still remains clear as tap water. Question: After cleanly installing a few brand new radiators with no flux, in reality is cleaner really required before fully flushing the system...

Hi, I've been looking into integrating my smartfit system with an evohome and I've quickly realised it's not possible. I'm going to have to replace my controls but I'd really rather not have to do any plumbing... With that in mind does anyone know of any suitable actuator heads I can use with...

Hi there, I have a 10-15 year old Worcester Combi Junior 24i that kettles only on Central Heating cold start. This winter is the first time it's started doing it. When it kettles, if I turn off the boiler via the thermostat for a few minutes then turn it back on again it runs no problem until...

Hi there, Second post in 11 years and boiler related... Couple of days ago I noticed the display on 7501 had gone off and heating permanently on, so went and got some more bats and was about to install when I noticed there was some corrosion residue. So I popped it of the wall and saw that...

Hi we’ve had a new wireless thermostat fitted to our combi boiler. we have it on manual temp mode and most of the day it appears to keep it within 2 or 3c of what we set. Not great but will do however in the evenings we will have it set to say 20c but the boiler just keeps firing the heating...

Hi all, Speccing some rads for a flat renovation and need to order rads ASAP as plumber just become available. On a budget but will pay where needed. I want to buy white column rads that are good value from somewhere I can easily return if needs be. Gathered quotes for the specs I need and I'm...

Hi all I'm moving into a new house, we got it for a bargain because it's in pretty poor condition. Floor plan Photos I'm not sure about the order in which we should do work to it. The 'essentials' that need doing are: -Rip up the carpet and restore wooden floors (DIY) -Repair/replace any...

I've got a problem towel rail in the house and I've been scratching my head what the problem might be. The towel rail only gets luke warm at best and there are no colder or warmer patches on the rail itself. All of the other radiators in the house are roasting. I've checked for an air lock by...

Sorry- yet another smart thermostat wiring question. I want to install a Drayton Wiser two channel system. I currently have a Honeywell wireless thermostat (connects to a R6660D) controlling my central heating. I have a Honeywell wired timer (ST9100c) controlling my hot water cylinder. I have...

we've got quite an old central heating system (regular boiler) with a tank in the loft. i could have sworn the water in this tank used to be hot, but i assume i'm mistaken and that it's a cold water tank? anyway, recently the heating has been making lots of creaking noises and the pump it's...

Hi, so we have a potterson promax so boiler and a water tank ... we have gas however the boiler has completely cut out and there is no hot water or heating, the pressure on the tank is very low... how do I increase the pressure? I have tried turning both valves but nothing happens - pictures for...

Hi all, Apologies in advance if this is a stupid question, I am totally helpless. Recently moved into a new flat and today turning the heating on for the first time since the move in date. We have a potterton performer 28, and as far as I can see I've set everything how it should be, but...

I know there are tons of questions from people asking whether they can use flexible tap connectors for central heating. To which the answer is always no. The reason why I am looking into flexible hosing is that my pipes knock. That's fine by itself as the noise from the pipes is muffled by the...

Hello I'd like to relocate the radiator in my lounge to the other side of the room which has a concrete floor. The is no neat or easy way to reach the other side of the room by running pipes around the walls, so I was wondering if it is viable to cut a channel in the concrete floor and hide the...

Hi I have a Valiant Combi (Home) 35 Boiler that is just over 2 and a half years old. We had an issue earlier in the week where the boiler was causing the rcd to cut the power, which stopped after a few hours. Presuming heavy rain may have got in the flue and caused condensation which dried up...

Hi, I'm having problems understanding the exact configuration of the CH/HW piping in my house. In particular, I have to understand where and how to place piping for additional radiators at the upper floor. My configuration is the classical one: loft cistern, indirect cylinder on the upper...