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combi

  1. L

    Noritz NRCB Combination Boilers

    A couple of main options from Noritz. NRCB199DV and NRCB180DV.
  2. H

    Electric Boiler vs Combi

    Hello, I'm looking for some advice please. I'm a keen DIYer but this is way beyond my pay-grade! My partner bought a house last year that's fitted with an electric boiler; I have attached a few photos. The property is a small, three bed Victorian mid-terrace with single story extension to the...
  3. H

    Worcester bosh combi boiler strange pressure problem

    ive been having problems with my boiler banging at night so ive had all my radiators changed and on Saturday had M C 3+ cleaner through the system and sentinel x100 inhibitor put in the boiler was fine that night Sunday night about 3 in the morning the boiler banged then i could hear a woosh of...
  4. NODDYNODSVILLE

    Costing to covert to a Combi boiler

    Goood afternoon all. My conventional boiler is over 15 years old and I want to convert to a combi boiler. My system is a typical wet system. 2 small header tanks in loft conversion loft. Hot water cylinder with electric immersion on top, with shower feed coming off the pipe, using a Surrey...
  5. whatsthenews

    Combi system.One radiator getting air in

    New Combi system (boiler and microbore re-pipe)about a year old. All radiators have TRV's apart from one of the bathrooms Started noticing a single loud bang,possibly from the hall radiator shortly after radiators have gone off. I say possibly because the radiator in the room above the hall...
  6. G

    Warmflow Utility 90 HE Combi Leaking and losing pressure...

    Our not so trusty but very efficient Warmflow is currently incontinent! Over the past 10 years, I've tightened all the fittings, installed new fibre washers ad nauseum, replaced the expansion tank, the flow meter and just this week the PRV. The boiler is losing water somewhere but looking at...
  7. E

    Combi conversion with gravity cold water

    If a conventional system is changed to a combi boiler and the twin boost pump and CWST have been left in and working would it be an issue that gas safe can get involved with ? The mains hot water and tank fed cold water was running through pump and because pump stopped working cold water...
  8. P

    Combi KW Rating (High or low?) - Fit De-aerator and Extra Expansion Vessel?

    Hi All, I am looking to replace an Ideal Classic FF350 in a 4 bed detached house, 1 main bathroom with a bath and electric shower, also en-suite with a thermostatic shower that is currently pumped (knackered) from a DHW cylinder (essex flange weeping). F&E and CWS tanks in the loft, gravity fed...
  9. M

    Best with combi or system boiler?

    I’m after some advice. We are replacing our 21 year old Ideal Classic boiler and have been looking at the pros and cons of combi vs system boilers. House is a 3 bed detached, 9 radiators, 1 bath tub, 1 shower. Boiler is currently on an external wall and we will be looking to move it into the...
  10. M

    Opinions Re: Worcester Bosch Greenstar 30i Combi

    Hi, would welcome some advice/opinions please. I currently have a Remeha Avanta plus 28c (combi) which is 11 years old, still working in a fashion but beyond economic repair. I have the opportunity to have a Worcester Bosch Greenstar 30i (Combi) installed using the boiler grant scheme...
  11. W

    Vokera Combi boiler replacement

    My 30 year old good servant a Combi Vokera Flowmatic 20-80 RS has finally given up RIP. Think Vokera don't make them like they used to so not necessarily like for like replacement. Ground floor flat with 5 large radiators and 2 small radiators. As this Combi has served me well I assume it was...
  12. A

    Combi Boiler heats radiators when hot water only is selected.

    My combi boiler has started heating the radiators when I select hot water only. Any ideas ? The system has been in for maybe 10 years.
  13. J

    combi to system conversion

    WB 12/14 Heatslave can't cope with two showers so fitted an unvented HWC on S plan, but need to shut off hot water section of combi. Boiler engineer has visited and was going to do the work, but he does not respond now, not upset him that I am aware of. Can anyone advise on the process, is the...
  14. J

    Can a combi in a cellar supply a radiator in the loft?

    If you have a Vaillant ecotec 28 in the cellar - supplying 7 radiators - 3 on ground and 4 in first floor - could that also supply a radiator in the attic?
  15. T

    Advice please about fitting mixer shower from Worcester Bosch 25/ 32 heatslave oil combi

    Hello everyone. Looking for comments/advice please about my wife's latest request... Which is to remove the existing bath from an upstairs bathroom (apparently we don't like it anymore!) and replace it with a shower. The hot water is from an external oil combi also feeding a second bathroom...
  16. C

    Promax Combi HE Plus

    Hi My Pressure Gauge is giving me grief it’s rising on its own goes down to 0.8 and then rises to 1.4 bar where it currently is the heating is not currently being used and no hot water has been used for a few hours. Does the gauge need re placing.
  17. S

    New combi fitted, how to fix noisy pipes

    changed from a gravity feed boiler system to a combi boiler and had problems with noisy pipes? About 4 weeks ago now had a new combi boiler installed, and from day 1 had noises from the heating pipes even though not on. Thought I was just up grading to a more modern space saving cost efficient...
  18. A

    Combi boiler making a whooshing noise

    Hello, Today a technician came round to check a radiator that wasn't working and turned off all the radiators which fixed the issue. Now the combi boiler is making a continuous noise that seems to be coming from the pipes underneath it. I've turned the boiler off and it's still making the...
  19. gcleve

    Set Worcester combi boiler to circulate without heat.

    Hi there - I have a Worcester Greenstar 25Si combi boiler running our heating rads. I've recently added a small tank with a heating element powerd by solar into the rads circuit. It's producing good heat, but I need a circulation pump to be on to move the heat around the system. Ideally I'd like...
  20. R

    New build heating engineer needs pointing in the right direction.

    Hi, I have a vaillant ecotec plus boiler (pre 2012 model) that is giving me hot water issues. It points towards a hot water heat exchanger issue or diverter valve, but I have replaced the diverter valve (old one seemed to still operate as it should as well) so it would seem that wasn't the issue...
  21. P

    Combi boiler issue or Shower?

    Hi Yesterday my shower in the bathroom started to run cold. It started fine but then ran cold...then got warm again before running cold again. This continued and then just ran cold. Other taps ran hot as usual so thought it could be the shower/cartridge. Instead of fiddling with manufacturers...
  22. G

    Warm flow combi boiler /No hot water

    Need help please... My Warmflow oil fired combi boiler will not supply hot water to my domestic taps but the central heating works fine. This is a dual pump system. I have linked out the connections on the boiler stat which causes the hot water pump and system to work and able to get very hot...
  23. S

    Ideal logic losing water!

    Ideal Combi bolier. When I repressurise the system to 1bar it almost immediately dumps the water out the condensate pipe before even switching in on at mains. HELP!
  24. K

    URGENT Worcester Heatslave 15/19 Oil Combi Boiler Pressure

    My boiler pressure gauge is at zero so the boiler is not firing up. I thought I heard a small water leak in the wall near the boiler the other night, just before this happened, but the leak has now stopped. I have been reading other posts to try to find a solution and I've hunted everywhere...
  25. U

    Installers with experience of Hybrid Solar Thermal / ASHP and Combi Boiler in Sussex Area

    Hi, I'm looking for someone to help specify, and possible install hybrid system. Initially the bungalow was setup for all low temp (underfloor heating and Fan assist heating rads), but couldn't afford ASHP at the time, so fitted a Vaillant Ecotec Plus 937 Combi as the heat source. Now looking to...
  26. F

    Ideal Combi hot water but noi heating

    Hi all. Daughter's boiler again thanks for help last year. New problem - hot water works fine, but when calls for heat boiler starts and runs for a few seconds then stops. No error messages. My thought is that pump is inop, so boiler starts up but then switches off when the small amount of...
  27. G

    Boiler replacement - Regular (with Boilermate) vs. Combi

    Hi everyone, I've just moved to a 4 bed detached house (2 bathrooms) built in 2005, in Bromsgrove (B60), with the original 15 year old set up of a Glow Worm Micron 60FF regular boiler coupled to a Boilermate 2000 storage unit. The boiler itself is not very efficient and I'm just waiting for the...
  28. A

    Logic 35 combi whistling !

    Hi all, my logic combi 35 boiler is whistling when the hot water is being used, including tap / shower / central heating. It’s becoming very annoying now, is there an easy fix for this ? Do I need to let some pressure escape? I do have boiler cover but would prefer to avoid the £60 call out...
  29. T

    Ideal Logic+heat 24 (not combi)

    Hi I have an Ideal Logic+heat 24 (Not Combi) it is: Alternatly flashing between: 0 (on its own) and C (on its own) when in central heating mode, it works fine on water only, any idea as to the fault? many thanks Tom
  30. WaterWorks420

    Ideal Logic Combi ES38 No control

    Hello, I have a Logic Combi ES38 Boiler and for some reason, it's ignoring the commands from the thermostats on the wall, for example, both thermostats are set to off but yet the boiler is still on, I've tried the following: I've turned it to just water and not radiators no effect. Changed the...
  31. J

    URGENT Ignition issue Main Eco 30 Combi boiler

    Hi All, I have a Main Eco 30 Combi boiler I was fitted about 7 years ago, the whole pipe work is new and radiators. I have so far replaced the electrodes since it was old and bent (it was working but I wanted to avoid it failing), the heat exchanger was hoovered and the seal was replaced, the...
  32. J

    Ignition delayed/explosive Main Combi

    Hi All, I have a Main Eco 30 Combi boiler I was fitted about 7 years ago, the whole pipe work is new and radiators. There is one thing that annoys me on my boiler is that when ever is ignites it makes a small tiny explosive noise you can hear it from far ? I have so far replaced the...
  33. R

    Ideal combi pre-heater not working

    Been out the trade now for sometime now, a little out of touch with the latested boilers. I have a problem with my Ideal 30 combi boiler as follows. Heating is fine, no hot water so replaced the turbine now working fine but the pre heater is not working and no fault codes given. Any advice...
  34. S

    Combi boiler. Running CH whilst DHW drained.

    Have a query regarding a morco combi boiler in a mobile home. It's set up with a link on the thermostat connections within the control panel and heat is controlled by Trv's. I'm planning on adding a hive thermostat to give me more control and intend to use the app. My question is, when the DHW...
  35. J

    Old Viessman vitodens 100 combi problems

    Hi guys, Just replaced some radiators in a recently purchased student let. The boiler is a 12 year old vitodens 100, 7248589. I tested the heating and hot water before draining down and it seemed to be working, maybe a little lack lustre on the heating. After completing the rads, refilling...
  36. T

    Baxi 105HE combi cutting out on DHW

    Hi there, bit of a hot water issue (or more lack of it) ever since I installed a new bathroom a few months ago. When the hot water tap is fully open the boiler heats the water as normal but intermittently the gas cuts out for 10-15 secs until the water cools back to 60 degs and then fires up...
  37. S

    Main Combi 30 HE leaking

    Hi, we have the aforementioned boiler and for quite a while now it’s leaked from the valve pictured. It drips down through the handle onto the bench below causing it to be damaged. Does anyone know what the valve is called, if you can get replacements and is it fairly straight forward to do? I...
  38. Bottom

    Leaking Overflow from Baxi DuoTec Combi 28 HE A. is it faulty PRV ?

    Leaking Overflow from Baxi DuoTec Combi 28 HE A. Is it a faulty PRV ? Pressure gauge is showing zero so no central heating or hot water. When I try to re-pressurise by opening the fill valve, the gauge will only rise to just over one bar and the CH will then work. BUT... all the water rushes...
  39. S

    Do I need to keep the overflow tanks in my loft if I get a combi boiler?

    In my loft I have 3 water tanks. A bigger black one, that I believe is the cold water overflow. A smaller black one, that I believe is the hot water flow, and a big brass tank that stores the hot water I heat. I'm thinking about getting a combi boiler, and I would like to know that if I do get a...
  40. M

    Combi off peak boiler

    Hi I'm not sure if anyone will be able to help me with this but as you will be able to tell I know nothing about boilers! I've just moved into a rented flat that has an electric boiler. The landlord didn't install the boiler so he's not super useful on how anything works! The boiler is an...
  41. C

    Currently awaiting repair Combi Boiler leaking for 8 years. Is my plumber incompetent?

    Hi everyone, my combi boiler has been leaking for 8 years. It is a german Vaillant VCW 204 https://www.google.com/search?client=firefox-b-m&biw=1280&bih=672&tbm=isch&sa=1&q=vaillant+vcw+204&oq=vaillant+vcw+204&aqs=mobile-gws-lite..0l5#imgrc=b27-0Ajev_snmM%3A The thing is, this device is from...
  42. S

    Combi boiler/shower mixer problem

    Hi. I have a Baxi Combi Instant 105e boiler. The problem is that the shower ran cold. So I called Brit Gas and they came and changed the DHW diaphragm and a temp sensor. The Hot water to all the taps is fine and constant but the hot water to the shower mixer goes cold more or less as soon as...
  43. M

    Thermal store combi boiler, hot water flow rate.

    Can anyone tell me the hot water flow rate on a thermal store combi boiler? As opposed. To a 40kw combi that will deliver nearly 16litres per minute. And any recommendations for a good thermal store boiler thanks.
  44. J

    Hot metal/burning smell from combi boiler

    Have some problems with my boiler that cant seem to get fixed. It's a worcester bosch greenstar cdi 30 combi and it's about 5/6 year old I think. So basically the boiler has been making like a burning/hot metal smell. But it seems to only make the smell when the boiler has been like working...
  45. T

    ideal logic combi +. Dhw problems,

    Boiler has been fine for 8 months then the dhw started getting colder. Replaced the heat exchanger and the flow turbine and all good for three weeks and now cold dhw flowing cold again. Replaced the turbine again and the divert valve and motor and no difference. I have removed the divert motor...
  46. J

    Worcester Bosch 37CDI Combi leaking

    Hi all, Our Worcester Bosch 37CDI has developed a leak from this part, located above the green casing, as you can see from the drip in the picture attached. Could you please tell me what this part is? Many thanks in advance John
  47. S

    Can one inactive radiator impact combi boiler operating pressure?

    Ideal C34 combi boiler, operating pressure dropping slowly but consistently. All active radiators regularly bled. However we have one radiator with TRV set to 0 (we don't want it come on) and this is never bled. Could this be impacting the boiler pressure and should we still bleed this rad? (Be...
  48. B

    hot water on combi boiler setting query

    Good morning, I have a query about the water dial on my boiler bought a few months ago (Vokera Easi-Heat Plus 25C Boiler) and apologies for no pictures. My hot water is fed via the combi boiler and cold water is mains fed. There are two dials under the flap one is for hot water and the other...
  49. K

    newcombi-boiler size in doubt

    just fitted a gloworm 24 kw into a flat with 6 rads one bathroom previous boiler were a 42 kw floor mounted ancient Worcester . client wanted wall mounted new boiler, only problem now is the flow rate too much for the boiler and full the water is luke warm did think of reducing the flow but...
  50. plumb_know

    Valliant Eco tec combi HE - heating issue

    Hi everyone, I have an issue with Valliant eco tec combi, tenant complaining heating is coming on sometimes when programable wired room stats (danfoss) are up to temperature. Typically when i attend it is always working fine so intermittent fault. I replaced both room stats for first measure...
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