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A boiler is a closed vessel in which water or other fluid is heated. The fluid does not necessarily boil. (In North America, the term "furnace" is normally used if the purpose is not to boil the fluid.) The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central heating, boiler-based power generation, cooking, and sanitation.

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  1. E

    Boiler pressure normal or not

    Hi everyone. I have recently installed a new gloworm energy 35 kwh combi boiler. The heating and hot water is functioning fine. In the first 4-5 days , the pressure was dropping from 1 bar to 0.5 bar requiring me to top up the pressure. Its now been over a week and Ive noticed the pressure...
  2. S

    Boiler losing pressure

    My boiler has started to lose pressure since I put the heating back on 2 days ago. It is losing it when the boiler is off and on.
  3. C

    Glow worm combi boiler - HW is working, CH isn't coming on, Radiator icon is flashing?

    My heating isn't coming on, the boiler is working but the radiator icon is flashing. It is a new glow worm combi. How do I stop the radiator icon from flashing so the central heating starts? Thank you. Kind regards Craig
  4. J

    Drain off valve *this* close to boiler flue

    Hope you're well. After finding a leak on our CH drain off valve (that our servicer missed). have realised it's very close to the boiler flue, like impossible to use and right up against it. It's on the return CH and hidden behind the flue. What do people think? I'm going to drain down and...
  5. Bengie

    Free Biasi boiler, take it away

    My boiler stopped working on hot water and having checked it out found it was the change over valve so I bought a repair kit for it only to find my son had bought me a new boiler. So I have this one going free, I can't remember the model but it has digital timing etc and the kit to repair the...
  6. L

    Copper push fittings used for a boiler swap.

    Hello everyone. Iv just read an article on installers magazine that says how much better gas installers find using copper push fit fittings for a boiler swap. According to the article, unlike plastic push fit fittings which cant be used in close proximity to the boiler, the copper ones can. So...
  7. T

    Condensation inside Heat only boiler casing - a couple of questions.

    Hi all, I've got a British Gas 330+ Heat only boiler and it displayed an F25 error (lack of water iirc) on Sunday. I read the manual and bled the radiators (1 rad had quite a bit of air) and topped the system up a little and sure enough I could then hear water flowing back into the boiler. I...
  8. Y

    Volkera boiler not igniting with filling loop working

    Hello, Please can anyone offer help with my Volkera Mynute HE. I have no pressure at all according the gauge and when opening the valves of the filling loop water has definitely gone into the boiler. The gauge does not show any increase in pressure and when removing the filling loop water is...
  9. S

    Worcester boiler condensate won't drain.

    Good afternoon all, I have a Worcester boiler installed recently. It was moved from the first floor to the loft. Existing 22mm condense pipe was extended to the loft. It looks like the old pipe has no slope and prevents air to get into the boiler condensate trap, preventing condensate to drain...
  10. G

    boiler install gas pipe size

    I need a new boiler and would prefer a 35KW combi boiler but wanted to know if my existing gas pipe will allow it. I wanted to check this first so i can look at my boiler options before getting somebody around. I don't have any other gas appliances and my existing pipe is 22mm. The gas meter is...
  11. R

    URGENT! - Riello RDB not firing - 2 weeks after boiler servicing

    Hi We moved in to a new house (a 200 year old cottage) 2 months ago and had the boiler serviced just 2 weeks ago. The guy said that the boiler has had some good money spent on it in the past and that it should be working perfectly. However I noticed over the past few days that the water...
  12. S

    What boiler advice, British Gas quote

    Just had quote from British gas to fit a new combi boiler. My old boiler is on its way out and is very old 25 years plus. Quote was for removing old boiler and copper tank and tank in loft. Move new boiler location to garage. Fit hive controls. Theres also already a waste pipe in garage to take...
  13. A

    Rhino boiler component ID

    Hi, Could anyone please assist in identifying the boiler component on the attached photo? The boiler is a Rhino Combi
  14. N

    Water backing up, leaking out boiler

    Hello everyone, I need a bit of advice please. I have bought a flat and have an issue in the kitchen. There is a boiler, then dishwasher, then washing machine, then sink in that order right to left along the same wall. The waste runs all along the one pipe, starting with the condensation pipe...
  15. B

    TMV/water flow boiler Query

    Hi everyone, I contacted the boiler company about the DHW temperature control as there is no LED to indicate the temp so have used a digital thermometer to see how hot the water is as sometimes when I run any tap or the shower the water temp changes cooler/hotter when the tap is running. The...
  16. N

    Grant Vortex 26 combi boiler help!

    Hi all, new to this forum and hoping to find some advice on my Grant Vortex 26 external combi boiler, Basically the heat exchanger sprang a leak, dripping on to the terminal box of the hot water pump below causing a short. I replaced the pump and the fibre washers on the heat exchanger, problem...
  17. trickyguns

    Ideal Vulcan SX / DLX gravity fed boiler - No hot water

    HI everyone, I went to look at a prehistoric gravity fed Ideal Vulcan SX / DLX boiler with reports of no heating or hot water. This is a 4 pipe 28mm pump fed heating and gravity fed water pipes to water cylinder. I found that the heating pump had stopped spinning and found sludge behind the...
  18. N

    Central heating pump and boiler

    The house has a gravity heating system. I replaced an old failing pump Grundfos UPS 15-50 (130) with Grundfos UPS3 15-50/65 130 I have drained the system and bleed the radiators for air. The problem is that since replacement of pump boiler Glow warm (about 15 years old) comes on for about 5...
  19. H

    Whistling Boiler on DHW Startup

    For around six months my Vokera Vision 25C has been making a short whistling noise when the hot tap is turned on. It started intermittently initially but now its everytime hot water is called for. I can’t recall any works to anything when it started. The noise lasts for two seconds max and I...
  20. B

    Combi boiler combined with immersion heater using solar PV

    Hello, I have solar panels (PV not thermal) on my roof which generate a lot more electricity than I use, but no batteries. My combi boiler has just broken and I need a new one. I was wondering how feasible it would be to get an immersion heater installed as well as a new combi boiler and an...

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