boiler

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 actually 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. Indiana Jones

    Gas Boiler High Pitch Whistle

    Noticed this a few weeks ago but finally decided to do something about it last Saturday by arranging for British Gas to come out and have a look. Basically whenever I run the hot water tabs a high pitch whistle can be heard coming from the boiler, it does not do this when the central heating is...
  2. M

    Question Interference From CH Boiler

    I have an old (16 years) Panasonic plasma TV connected to a Humax HB-1100S Freesat box via HDMI. For a while, although I couldn't say how long exactly, I've been losing signal on some channels temporarily - it'll go off for a second or two (normally a snowy picture like an untuned analogue TV)...
  3. N

    Urgent ! Boiler advice please

    Hi, Cant find the thread about boilers. Hope this will be seen. Found a small white plastic part on the floor of my cupboad last night that could have come from my boiler. I had my boiler serviced last week. Guy seemed a bit clueless but left him to it. Its working OK but I'm worried about this...
  4. Davekale86

    Question Boiler keeps turning on

    As per the thread question for some reason my boiler keeps coming on at all daft hours even though there is no timer set,the thermostat downstairs is turned off but heating keeps coming on randomly bugging the hell out of me anyone got any ideas why it’s doing that? Thanks
  5. tigermad

    Honeywell Evohome HR92s changing temperature themselves

    Last week the Honeywell TRV in my hall decided to turn to 22.5c on its own even though the programme was set to 14c. Luckily hubby works from home and noticed the boiler had kicked in so managed to change the temperature back. I am not sure where 22.5c came from, it’s not in the programming...
  6. C

    Outdoor temperature sensor for boiler. Weather compensation

    Morning all I appreciate this is a very long shot but can anyone help me with a (failed/failing/non-working) outside temperature sensor for a combi boiler? I’m not sure if we are unlucky or lucky to have moved into a house where the boiler is totally controlled by an outdoor sensor. We can set...
  7. J

    Boiler Control Automation with Alexa - Help

    I have a boiler where the target temperature can be controlled by Alexa but the boiler itself does not have an internal timer. I am looking for room thermometer that can read by Alexa. I then want to increment the boiler target temperature to a value, say 24C (it is working in weather...
  8. Alps

    Boiler coming on without timer!

    Guys, further to my attempts to cut down on my daily energy use, I've just noticed that my boiler is coming on even when I've not set it to come on. Not helping in my attempts! Currently my boiler (Vaillant EcoTec 837 is set to come on at 5pm, however, at 4:15pm it was firing away and turned...
  9. sykotik

    New boiler fitted and smart thermostat ( cant figure out the programme settings)

    Just got the navien boiler and smart plus wireless thermostat fitted and having difficulty working out the program settings On the website page 23 it says I have "upto" 6 programs ( settings for the day )...
  10. M

    New Boiler problems

    I had a new combi gas boiler installed in January this year but it was dead when he went to commission it. He rang the manufacturer's helpline and they sent someone out the following day. They said there was moisture on the electrical contacts. Fuses were changed and all was working. The...
  11. Barrovian

    Recommended Boiler and cylinder temp settings

    I'm hoping someone give me some advice. I have a 10 year old British Gas 330 condensing boiler and a hot water cylinder in the airing cupboard which has a thermostat setting on the side. I'm always struggling trying to get a balance between hot water that is more than lukewarm and radiators that...
  12. J

    Hive Heating Not Communicating With Boiler

    I recently installed a Hive Active Wireless Heating package, but am having trouble with the system communicating with my combi boiler and would really appreciate some help. I'm not a certified electrician or plumber, but electrically competent, and think I'm 90% of the way there, but Hive won't...
  13. noiseboy72

    Replacing boiler - stick with hot water tank or heat on demand

    Hi All Our Ideal Standard gas boiler is 20 years old, so is probably about due for replacement. What's the current consensus on heating, should we be looking to just replace the boiler or do we go for a heat on demand system instead? We are a family of 3/4 (daughter at university) and have a...
  14. C

    Baxi combi boiler issue

    Hi Mother-in-law has a Baxi combi that will no longer heat the radiators, hot water through the taps is fine. It is controlled through a Baxi wireless remote programmer. It seems OK because if I turn up the temperature on that to tropical the boiler fires up and both the 'running' and...
  15. bogart99

    Question Boiler control

    Might be a tad off topic but here goes. The heating/hot water boiler is in an outbuilding some 20m from the main house. Currently the boiler gets the signal to switch on via an underground cable. Now this is the problem it is just a piece of T&E buried about a foot below the surface, not an...
  16. A

    Boiler Programmer / Controller Swap Help

    Hi All Looking for help. My sisters boiler programmer is faulty, so I've bought a like for like programmer (Worcester Bosch DT20RF), think her boiler is a Worcester Bosch Greenstar 24i/28i Junior. Seen a video online that showed a few seconds of installation, I.e. taking old programmer out...
  17. C

    Efficient programme for water heater

    Hi everyone, I’ve just moved into a 1 bed flat and everything is electric - just got our first electric bill through and it was £145!! I think the culprit may be the water heater which we currently have on all night. It is a OSO Super S unvented hot water cylinder controlled by a Horstmann...
  18. vvolkov

    Question Replacing Danfoss to Nest thermostat Help!

    Hello nice people. Im trying to replace my existing Danfoss thermostat with Nest 3rd Gen. Lack of diagram understanding! I really do appreciate if you can give me not only clear answer, but also share how to read these simple diagrams. I really want to understand it. My Combi Boiler is ideal...
  19. Veni Vidi Vici

    Anyone had a new combi boiler installed recently?

    I was just wondering what a new combi boiler costs these days, it looks like I might have to replace mine. I might go for a Vaillant, any ball park figures or tips/recommendations? Are the wireless controls a built in feature of something you have to pay extra for or is that feature a waste of...
  20. Ugg10

    Boiler Room Guildford 05 Jul 18

    Went to the Boiler Room in Guildford last night to see Jinjer (band) unfortunately they had work permit issues so did not play but fortunately the promoter gave us the two support bands for free (with a promise to re-book or refund). I had already OK'd it with the promoter to take in my camera...
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