Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

heating

  1. P

    Should I insulate vent pipes in loft (from DHW cylinder and central heating)

    Hi I recently did some pipe insulating in my loft. The only two I didn't do were the vent pipes. Not sure if that is the right term for them? They are the pipes that feed water back into the top of the tanks when there is excess, presumably from steam, expansion, etc. The one going to the cold...
  2. D

    Nu-heat Blend valve not working on underfloor heating

    Hi, I have I blend valve from Nu-Heat ( they bought it from Reliance, as per attached spec). I have dismantled the valve now 3 times and replaced it with new components from Nu-Heat but the valve is not working properly. The valve replacement seems very simple with 4 main components and some...
  3. ericmark

    Google Nest Central heating control how to improve?

    I have a home with an oil boiler in a garage turned into a flat, heating both flat and main house, running c plan with two pumps, two motorised valves simple bi-metal thermostat on wall in flat with 4 standard TRV's rarely used so not worried about the flat, and main house has Nest Gen 3 in the...
  4. J

    Radiators not heating as expected? previously were

    Hi All, In Dec 2023 I had my annual boiler service and asked the plumber to change 2 radiator valves as the radiator in the toilet downstairs was not working. He changed both valves and still the radiator was not working. He put some chemicals in and said it should break up anything that is...
  5. Merton69

    Combi boiler - heating not working

    Hello The heating side of my Ariston Combi A23 has stopped working since a new 3 way valve has been installed. It's been a hugely reliable boiler up until now with regular servicing. When the heating is turned on the boiler ignites and looks to start up but then a few seconds in, knocking sounds...
    • Merton69
    • Thread
    • boiler combi combi boiler heating
    • Replies: 10
    • Forum: Boilers
  6. F

    Vertical Radiator Makes A Bang When Heating Up & Cooling Down

    Hello, I have a customer with a modern anthracite vertical radiator and a modern TRV and lockshield. The radiator makes a loud metallic bang from within the radiator, when it heats up and cools down. I have opened the lockshield fully, lowered the boiler pressure from 2.5 bar to just over 1...
  7. S

    Where is the hidden central heating pipe leak causing low pressure?

    I have been facing central heating low pressure on unvented hot water RM Cylinders but can't see any leak on the PRV, expansion vessels and plasterboard celling. I have got unvented pressurized RM Cylinders hot water system with 27KW Worchester gas boiler with expansion vessels . When...
  8. H

    can this be done in a pressurised heating system

    Hi all , on a pressurised heating system is it ok to take a flow and return up into the loft and down again to install new radiator also would it be prudent to put AAV at the high point , thanx in advance . Howy
  9. mattgriff88

    Flushing/Cleaning central heating system?

    Hi I have recently bought a house which is 17 years old. There was a small leak from one of the radiators So I took the pipe off and drained the radiator and the water was black/brown. I took the radiator off and flushed it out with a hose pipe out the garden but it's got me thinking and I...
  10. B

    Central Heating T up & downstairs, valve to restrict upstairs?

    Hi, I have 3 port value for HW & CH. Loft extension added many years ago so they added a T to go upstairs, only 2 rads up but 11 downstairs covering at leave twice the floor area As per diagram has free flow Up or Down, no way to balance. Works pretty well but last few Rads (in kitchen) are...
  11. M

    Hot water demand effect on central heating for Combi boiler

    Hello, We’ve recently moved into a fairly old, fairly big detached house (i.e. fairly draughty, but not too bad by any means) with a fairly new well maintained Worcester combi boiler. We weren’t convinced the heating was working right and then got hit with a £610 energy bill for the first 6...
    • MartinPod81
    • Thread
    • boiler central central heating combi combi boiler heating hot water water
    • Replies: 0
    • Forum: Boilers
  12. K

    hot water but no heating

    We have a dual heating system, a solid fuel stove with back boiler and a external kerosene heater. The kerosene heater is working fine heating the radiators and the water for the taps The solid fuel stove will heat the water for the taps but the radiators will only get luke warm. Can anyone...
    • Kenneth1
    • Thread
    • heating hot water water
    • Replies: 1
    • Forum: UK Plumbers Forums
  13. seweller51

    Vertical radiator not heating up

    Hi all. Could someone help with a issue I have been having with my vertical radiator. I have one vertical radiator in my bungalow and it does not heat up unless the surrounding radiators are shut off. I have tried turning the surrounding radiators down but the have to be completely or very...
  14. M

    Baxi boiler pressure drops after heating

    Hi, we have a back combi heater. Whenever the heating comes on it seems to lose pressure within a few hours and I have to refill each morning. The boiler seems to function well, and the pressure only drops with the heating and not the water being on. Ie it started last winter and was then...
    • Martin Pearce
    • Thread
    • baxi boiler heating pressure
    • Replies: 1
    • Forum: Boilers
  15. H

    Vaillant ecotex 831 - heating only working in service mode

    Wishing everyone on tgmhis forum a very happy Christmas!! I am working on a combi boiler which has problem with heating only. Water is heating normally. Here are the symptoms 1. Signal from thermostat is not firing the boiler. It does not make any sound when heating is on from thermostat. 2...
  16. J

    Banging noises in central heating - Help!!!

    Desperate for some help! Be a life saver of someone can help as suffer from a high intolerance to noise. Moved into new house 1940s (copper pipes) and having serious issues with banging pipes only when central heating is on. Not when running taps We have a wall in living room that has stop tap...
  17. mehmet

    Combi underfloor heating and external boiler connection?

    Hello, I have a gas boiler in my apartment that heats a net area of 300 m2 with an underfloor heating system. The boiler has a capacity of 45 kW. There's no issue with the heating system, but I want to increase the hot water capacity. I plan to connect an external 200-liter boiler. How can I...
    • mehmet
    • Thread
    • boiler combi connection heating underfloor underfloor heating
    • Replies: 3
    • Forum: Boilers
  18. B

    Radiators not heating.

    Hi. I hope some one can help. I have a condensing oil burner and it runs fine but the radiators don't heat. Heats the hot water fine. The pump runs and the thermostat turns the boiler on and off. Thinking it could be a thermistor. All help greatly appreciated.
  19. Dan

    My Central Heating Doesn't Work - Master Thread

    I thought I'd create a master thread to move all of these similar threads into, over time like. If your central heating doesn't work boiler doesn't work radiators not working radiators or heating system is cold thermostat wont work or respond Then post a reply in this thread. Rather than us...
  20. A

    14,15mm pipe for central heating

    Hi guys. A couple of things. 1 am I better fabricating bends in 14 mm copper for my ch or are 90 degree elbows fine, ref flow, friction ect. 2 my ch boiler, non condensing is playing up, I can get hot water, but when heating is on pipes only get hot for 1st mtre or so? I can hear feel the...

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Back
Top