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heat

  1. H

    Please help, loud clanking noise from heat exchanger/boiler?

    Hi guys My boiler has been making a strange clanking noise which sounds concerning. Below is a link to a video where I recorded the noise. Any ideas what’s happening ? Currently chasing the landlord to get someone to look at it. Thanks Clanking boiler sound -...
  2. A

    Small cracked heat exchanger really an immediate do-or-die-NOW problem?

    I wrestle trying to get my mind around the claimed dangers of a heat exchanger with a small crack in it. I know salesman LOVE it, as it is very convincing to homeowners, and since personal safety is implied, it's pretty much a "signed deal" for a new furnace. I believe I have so much evidence...
  3. C

    My grant 70 mk 2 heating pressure is constantly increasing in pressure. I have changed the heat exchanger

    My grant 70 mk 2 heating pressure is constantly increasing in pressure. I have changed the heat exchanger as I believe that was the problem. Any ideas
  4. M

    Getting hot water but no heat to radiators.

    Hi, I am abit stuck and cant really find a solution anywhere.. So, i have an F&E gravity system. The central heating pump needed replacing as the shaft had seized, changed it all well and good pump working lovely. I am getting only hot water The mid position valve is on the middle setting , if...
  5. S

    log Burner Heat exchange?

    Hi all. Does anyone know of a small water heat system that I can attach directly to the back of my log burner, in my living room, that can conduct the heat (by contact) of the log burner and flow the hot water to a panel radiator in another room (e.g. conservatory)? I only want a very simple...
  6. F

    Combi-boiler plus Thermal heat store - problem and suitable replacement recommendation

    Hi, sorry to bother you all with this but I am really struggling to find a suitable combi-boiler replacement and a knowledgeable heating engineer to discuss options. Ive tried to note as much relevant details below - apologies if its too long or irrelevant. Any help most gratefully received...
  7. J

    Air source heat pumps in the news again

    I'm getting so sick of the media and tories plugging ashp's like they are the solution to all our heating needs. Latest news today, £5k grant towards the cost of replacing a gas boiler with an ashp. What a joke. Every ashp system I've worked on and installed runs the heating at 40 degrees...
  8. B

    Hot water but no heat Heatslave 18/25

    We have a 9 yr old Heatslave 18/25 that's been regularly serviced. Heating was on in the morning but failed in the evening. My son is Gas safe engineer and suggested trying a few things before calling our usual engineer. He disconnected the twin channel control panel and put in link's so it is...
  9. S

    Balancing radiators on Heat Pump System

    My radiators are fed by a Ground Source Heat Pump. On the balancing advice I have seen, it says to have a 12 degree difference between feed and out on a normal heating system. My question is because the boiler runs at a lower temperature than a normal boiler, what temp difference should I be...
  10. NeetieM

    Replacing a 12 year old air source heat pump

    Hello, I hope someone can give me some advice on replacing an old air source heat pump. We moved into a shared ownership house last year which has a Daiken air source heat pump fitted to provide heating and hot water. The unit was fitted when the house was built 12 years ago. It seems that the...
  11. BuilderDan

    unpressurized open/direct UFH with buffer tank heat source

    The following is a proposed very simple installation of UFH open/direct to an existing 1000 gallon fossil fuel hot water storage tank: We are told that this won't work since the UFH pipework and pump are above the height of the tank, and therefore gravity will empty the UFH... But our...
  12. G

    Removal of baxi back boiler now i have installed a combi and no heat upstairs

    i have relocated the pipes from the old boiler and remove the hot water and heating expansion pipes i have used the hot tank pipes to fix a small rad in the old airing room removed the pump and connected the flow and return from the boiler 5 out of eight rads d/stairs work the rest nothing this...
  13. J

    Heat Only Boiler - Radiators Hot But No Hot Water

    Hi Guys, I have a heat only boiler with two tanks in the loft. I have recently drained the system and since then i am not getting any hot water. The hot water tank front two pipes are hot, however the one coming out the top is cold. Radiators are heating up completely fine. Hot water taps...
  14. Atanas Peev

    Heat exchanger problem

    Hello everyone do any one had such experience with main heat exchanger on combi boiler Thank you
  15. H

    Ideal Heat H18

    Hi All after some advice. Called out to a boiler with a noise(didn't do it when I first got there), reverberating noise on low rate. It was also due a service, checked and cleaned condensate( and pipe), cleaned heat exchanger,(replaced burner as deflection in the plate), replace spark/flame...
  16. D

    Lux Heat Column Radiators?

    I'm contemplating treating the front room to some aluminium column rads. Looking on the justradiators site there's 1 that fits the bill at nearly 2 metres long. A company called Lux Heat makes the rad I'm interested in. Anyone heard of this make and are they ok?
  17. A

    Baxi heat only boiler - switches off after a few minutes with a red flashing light

    Baxi heat only boiler (7 yrs old) - switches off after a few minutes with some banging noises followed by a red flashing light on boiler Reset the boiler manually after 5 mins and it runs fine all day Next day when i switch on the boiler on it does the same thing ive opened the screw on the pump...
  18. D

    Radiator doesn't heat up

    Hi all, Sorry for the basic question, but one radiator in one my new ( old house ) house doesn't heat up, its a 15mm pipes but the rest of the system is on 10mm so it has reducers close to the rad. I have opened the taps fully and notice that the left-hand side pipe is warm, when the heating...
  19. J

    Heat loss/ rad sizing

    I've had two suppliers tell me they'll size the rads in a new build, the only info they want is the size of each room. They said they don't need to know about windows, Insulation, what's above it or below as it's a new build. I've heard that it's ok to oversize rads so that you can get a lower...
  20. D

    Any advice on heat recovery fans from Vent Axia and how good thier "h" humidity function works?

    Hi I have an old house which has had double glazing fitted to the rear of the property, in the kitchen, good for heat retention but not for damp. I was expecting to buy a Vent axia in-room MHVR fan to help with drying out the room and maintaining its temperature. The model which I think...

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