boiler

Central Heating Boiler, Combi Boiler, Hot Water Boiler

Central Heating Boiler | Boiler - Hot water boiling system​


A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. 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.
Central Heating Boiler | Boiler - Hot water boiling system

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  1. F

    Oil Combi Boiler Hot/Cold/Hot

    Hello. I have an oil fuelled combi boiler and the hot water starts hot, then goes cold for a few seconds and then back to hot... Is this right? Thank you.
  2. P

    ProBoil hot water tap boiler leaking

    I have a proboil 2x boiler for my instant hot water tap. It has developed a leak from inside the casing. This is the 3rd boiler i have had now as replacements and all developing the same leak. I live in a soft water area, any ideas what could be causing this or is this a known fault?
  3. Jamro91

    Gas pressure dropping to zero when demand kicks in?!

    I have an Ariston combi e on lpg, the gas pressure drops from a lovely 37mb to 0 the second gas valve opens and fan starts to run, usually would drop to around 35mb on comparable systems. Any ideas what could cause that? I suspected a blockage in the regulator so changed that and attached the...
  4. dilligaf

    Peglar Ventair Feed?

    Can anyone tell me where the feed for the water comes from that feeds into the bottom of this Ventair?
  5. dilligaf

    Heat storage tank only?

    Is it okay to use the boiler to heat the storage tank only whilst the central heating radiators are drained on with a conventional system?
  6. U

    Pros and cons of running boiler gas supply pipe indoors Vs outdoors

    Hi all, Does anyone have any feedback as to which is best. Running the pipe from the outdoor gas meter to a new boiler on an outside wall or run the pipe under the floor (suspended timber) which is our existing setup and the new boiler is being sited in same location as old. I ask just in...
  7. P

    Boiler takes multiple times to stay fired up

    Hi there. I have Grant oil fired boiler which when cold, takes multiple times to fire up. It will run for say 20 or 30 seconds with hot exhaust gases then it stops. The fan is still going then it starts off again and stops again. After 4 or 5 goes it runs fine. When the boiler gets up to...
  8. U

    Boiler upgrade options

    Hi all, We're looking to update our existing central heating setup and wanted to get a few more opinions. We currently have an open vented conventional boiler with cold water expansion tank in attic and indirect vented hot water cylinder. Initially we thought we would just swap to a combi...
  9. G

    Boiler firing when the cold water is turned on

    Hi all, Hope you’re all doing well. I had a new bathroom installed recently which involved new piping, and also capping off some redundant pipes. Since then, my boiler (pretty new Vaillant combi) turns on when I turn the cold water on. I’ve done some reading and it seems like the problem is...
  10. M

    New Boiler advice - System or Combi?

    I am currently in the middle of a complete rennovation of my house and need some advice on what kind of boiler to get. The house will have 4 bathrooms in total. One on the ground floor (shower), two on the 1st floor (en suite has a shower and family bathroom has a bathtub and seperate shower)...
  11. J

    Worcester Boiler - GREENSTAR 8000 Life - Heating anomaly

    Worcester Boiler - GREENSTAR 8000 Life - Heating anomaly I have recently noticed when I have lost power to my boiler and power is then reinstated that the Central Heating comes on. Is this the norm?…ALL CH controls are off.
  12. 6

    Roofing replacements and repair work to properties with vertical flues

    Can anyone turn a boiler off to work around the flue for roofing as an example, as long as a registered gas engineer carries out the required checks and certification before turning it back on?
  13. Jrtyson95

    worcester Green star 4000 f-1019 & f2965

    Hi Fitted a new out the box’s boiler today. It worked for 30 minutes. Then stoped and went to fault codes 2965 B Flow temperature too high ▶ System is not filled with water. ▶ No water flow,because CH system is closed. ▶No water flow, because pump is not operating correctly. ▶ Check flow...
  14. T

    Condensing boiler with rads possible? (no UFH)

    Hi, I have an 20yrs heat only potterton 50e boiler with 196x old house - suspended floor - designer radiators, open vent system and hot water cylinder on first floor with two motorised valves and stat. I want to replace the boiler with minimal cost and max efficiency so thinking of replacing...
  15. PhilTilson

    URGENT Replacement Boiler Advice

    Grateful for any advice regarding this problem. Flat about to be let and main heat exchanger in Worcester Bosch Greenstar 24i Junior has failed! I can replace with identical model (I think!) but would prefer to use GC2000iW C if possible. Question is, can the 2000 fit directly onto the 24i...
  16. J

    Unable to lower boiler flow temperature.

    Hi. Just got a new Worcester Bosch 28cdi. The central heating temperature control will only turn clockwise from the "e" point which is 62 degrees to the maximum which is 85 degrees. It will not turn anti-clockwise from the "e" point to decrease the temperature. The manual says the "e" point...
  17. R

    Boiler hot water issue & water pressure issue upstairs. please help!

    Hi everyone, New here & my first post! I have a Worcester greenstar 24i, it is a conventional boiler, it has a water tank upstairs. For the past year the hot water when turned on was intermittent. I repressurised the expansion vessel to 1 bar and the hot water switch when turned on worked...
  18. E

    Back boiler venting and flue requirements

    Hi all, Apologies if this has been covered elsewhere but I can't find an answer to my questions. I have a back boiler and gas fire which h has been serviced regularly over the years by different engineers with no issues. Last time , the guy wanted to condem it due to not being compliant with...

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