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flue

A flue is a duct, pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors. Historically the term flue meant the chimney itself. In the United States, they are also known as vents for boilers and as breeching for water heaters and modern furnaces. They usually operate by buoyancy, also known as the stack effect, or the combustion products may be 'induced' via a blower. As combustion products contain carbon monoxide and other dangerous compounds, proper 'draft', and admission of replacement air is imperative. Building codes, and other standards, regulate their materials, design, and installation.

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  1. R

    Condensate dripping from boiler flue - advice please

    I have an Alpha Intec boiler installed on my loft wall. The flue goes horizontally from the top of the boiler and passes through the wall, exiting high up in the gable end. The boiler was installed about 6 years ago. My attached garage joins the gable wall directly below the flue. I had the...
    • robertm67
    • Thread
    • advice america boiler condensate dripping flue please usa
    • Replies: 2
    • Forum: USA
  2. S

    Help with Convesa Black Twin Wall flue

    Hi Could anyone help or advise me please? I have a Black 5'' Convesa Twin Wall Flue from my dining room to outside wall, the flue needs another 1000 mm pipe fitting as the cowl is to close to the ridge on my dormer window, the flue was fitted in June 2016, the current Convessa flue is KC which I...
  3. K

    Flue alignment

    Hi all Ive jjust had a new Baxi 836 installed.The engineer couldnt line up the flue from the top of the boiler to existing hole.He,s offset the flue at an angle to go thru said hole and placed sealing ring on the flue but it doesn,t cover existing hole,there,s an inch gap one side.Would this be...
  4. R

    Is this ridiculous (boiler serviced and flame adjusted with flue buried in snow)?

    The boiler downstairs was serviced (not to be confused with the one with the gas leak - this is a separate boiler). The chap said the flame was not burning that well and so he readjusted it. All seemed well. Today I looked up at the house. Given that the downstairs boiler is never used...
  5. S

    Leaking Flue pipe from Boiler

    Hi all, Had a plumber come round today to service our boiler and it turns out he's had to turn it off as unsafe due to some water leaking on the outside of the flue pipe. At the time the plumber said that the instillation was done terribly and that if I really wanted I could report the job as...
    • squirejones
    • Thread
    • america bad job boiler flue flue pipe leaking pipe usa
    • Replies: 13
    • Forum: USA
  6. K

    Combi boiler with low flue???

    Hi all, I hope someone will be able to advise. I have recently purchased a flat with a faulty Potterton Netaheat Profile system boiler. The system is pressurised and I would like to replace it with an efficient Combi. The current boiler is situated close to the floor and the current flue is at...
    • keenphotography
    • Thread
    • america boiler combi combi boiler flue usa
    • Replies: 14
    • Forum: USA
  7. R

    High pitch noise from boiler flue

    Hi, My boiler has started making a very high pitch noise when the heating turns on. It seems to be originating from the boiler flue (see video https://bit.ly/3pYMFrI ) Is this an indication of air trapped in the system ? Do radiators need bleeding ? Or a sign of faulty boiler part ? Thanks
    • Rajen
    • Thread
    • america boiler boiler flu boiler noise flue high noise usa
    • Replies: 3
    • Forum: USA
  8. S

    Eon boiler grant upgrade extra costs

    I've been approved for a new boiler on the scheme. My old Greenstar 28i Junior mark 3 has been great. They're fitting a replacement Greenstar 30i. However there's some high charges extra for a new flue, new brackets, flashing kit and other bits and bobs. This is around £300. A few services ago...
  9. M

    Boiler Flue

    Hi Guys My Baxi Duo Tec Boiler as developed a condensate leak where the flue pipe connects into the flue elbow. I suspect the seal as gone in the elbow and so I want to replace it. Having looked on top of the boiler casing, where the elbow connects to the boiler adaptor there are two, for...
  10. B

    Boiler Flue

    Hi. Could you tell me if a flue that exits a wall horizontally for approximately 8cm and then goes upright at 45 deg for another 8cm is legal? I was wondering if the flue could get blocked or let in a lot of rainwater. Thanks.
  11. D

    Flue location concern

    Hi looking for some advice. I need to get a new boiler fitted in the next few months and I’m concerned about the flue location above my conservatory (ignore the mess which is due to be cleaned away). Can anyone give me there opinion on this? If it’s a problem, can it be resolved in its current...
  12. CorgiDirect

    If you're thinking of upgrading your flue gas analyser, we've got some great news for you

    If you're thinking of upgrading your flue gas analyser, we've got some great news for you. New testo 300 domestic models (limited edition black handset) have price offers, and get a free testo 830 IR thermometer with testo 327 and 320B kits -...
    • CorgiDirect
    • Thread
    • america analyser flue flue gas analyser gas gas analyser great news testo thinking usa we've you're
    • Replies: 0
    • Forum: USA
  13. J

    Boiler Flue Regulations

    Does a window need to be atleast 30cm away from the base of the boiler flu (the part that comes out of the wall/opening) or the end of the flue where the fumes actually come out. Our window opening is less than 30cm from the hole where the flue comes out, but the end of the flue is more than...
    • JoeJoey
    • Thread
    • america boiler boiler flu flue regulations usa
    • Replies: 3
    • Forum: USA
  14. J

    rain water coming into Ideal Combi boiler through flue and causing main circuit board to blow.

    The main circuit board has gone 3 times in the last 3 months after heavy rain. I have a maintenance contract with British Gas but they will not keep replacing the board FOC. How can I stop his happening? The boiler is 7 years old and I have not had this problem until recently so what will have...
    • Jonas L
    • Thread
    • board boiler causing circuit combi combi boiler coming flue ideal ideal combi main through water
    • Replies: 11
    • Forum: Central Heating Forum
  15. J

    Renewing flue

    I’ve to renew a Flue on a Vokera Unica HE today. Nothing wrong with it, there’s a new window going in and the flue needs moved along a bit. Maybe just a case of Fitting a 45 to the bend to take it out a bit. Anyway, I’ve never done this before, I never do maintenance work, only installs. Would...
  16. 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...
  17. J

    Flue too close to window above flue

    Hello! Hope you're all well. I've read guidance and searched the forums before posting this..... Had our boiler serviced and had a risk notice put on it due to the flue being too close to an openable window. A flue installation fault was also found (sloping down wrong angle for condensing to...
  18. 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...
    • Hadventure
    • Thread
    • america boiler dhw flue noise usa whistling
    • Replies: 10
    • Forum: USA
  19. eagleeye

    Do any manfactures do side exist flue boilers

    No really researched this yet but can anyone tell me if there is a heat only boiler on the market that does a side exit flue ? We get quite alot of old boilers that we have relocate because the new top or rear flue type just wont be possible. Normally if replacing a boiler in a kitchen cupboard...
  20. J

    Worcester ri flue, does this look right?

    Hi all, this is a telescopic flue from a Worcester greenstar RI, I am looking for a replacement, I need the elbow that usually comes with boiler (with the test point).... my question is, if I get a new elbow will it fit on the end of this flue in the pics? are they a turn and click connection...
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