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underfloor heating

  1. S

    Wet underfloor heating adding a rad.

    Hi there, just after some advice. I have an underfloor system installed and at the time of laying I had a spare loop put in with a view to adding a conservatory. I've now changed my mind and want instead to add in a single radiator. I can see the unbroken loop protruding into the conservatory...
  2. P

    Underfloor heating, radiators and Nest

    I currently have a radiator central heating system, controlled by a Nest with OpenTherm (combi boiler, no zones/valves). I'm now getting an extension built which will be one big room from the new structure and the existing kitchen and dining room. I'd like to install underfloor heating in this...
  3. F

    Downstairs underfloor heating is dead due to electrical problem

    Hello all, I'm hoping someone can advice me on my heating problem - I seem to have lost all downstairs UFH, but the upstairs heating and hot water are fine. About our system: We have a gas boiler feeding an 5 zone UFH system downstairs, some radiators upstairs and the hot water cylinder. This...
  4. S

    Best way of wiring underfloor heating?

    Good afternoon. We have just finished our single storey extension and due to costs, I have done quite a lot of the work myself (GRP roof, kitchen fitting, joinery etc) I also laid all of our underfloor heating pipes and connected to the UFH manifold having spent hours researching both online...
  5. P

    Underfloor heating

    Can I ask for advice, would it be ok to install underfloor heating as an additional zone on an existing s-plan circuit. The plan would be to have the thermostat for the room with the underfloor heating, operating the new zone valve, and at the same time switching the underfloor pump. Would it...
  6. C

    Underfloor heating

    Just having a bit of trouble with one room underfloor heating. New build bungalow in 2016 with a Daikin Air Source heat pump. No idea what make the manifold is for our underfloor but for no apparent reason the bathroom will not come up to temperature. Being "older" we have always kept it ay...
  7. M

    Question on underfloor heating pipe conduits

    Dear community members, Got a question here in hope someone can help to advise. I recently got my extension done with U/F heating installed. The manifold is in the garage next door so there are four pipes pass through the wall. The work is done and is working ATM. I wanted some plumbing work...
  8. U

    I Need Your Help! Underfloor Heating Not Working - Flat with HIU

    Hi Plumbersforums Experts, I have a question that I hope the experts in this forum can help me with. Our underfloor heating (water) has stopped working a few weeks ago. We live in a new-build block of flats with a central boiler and an HIU unit in our flat. I have asked two engineers to...
  9. M

    Boiler solely for underfloor heating circuit

    Has anyone ever fitted a gas/lpg or oil boiler solely for underfloor heating? Piped up to a manifold.
  10. B

    Biocide for underfloor heating?

    How essential is biocide in UFH? I have brown dirt in nearly all flow-meters and heard different views on how effective biocide (such as X700) may be. Some say brown colour is from iron particles (magnaclean is fitted) other say its from bacteria living in the pipes? On a close topic: Is it ever...
  11. S

    Underfloor heating worries

    Hi guys, I'm having some trouble with my builder and the plumber who fitted my underfloor heating. In a nutshell, the plumber has laid Hetta aluminium pipes over c. 40 square metres comprising of two zones. The builder has then laid around 6cm of semi dry aggregate-based fibre screed. He's then...
  12. U

    underfloor heating. one section not heating.

    Problem with activator in just one area of the UFH system. I don't know how to take off the activator to check the pin. No problem with water flow. Not sure how to handle the flex coming out of the activator. I know the pins aren't working as the water gauges are not responding (that's what...
  13. A

    Underfloor heating - manifold valve leak

    My underfloor heating has sprung a leak where one of the pipes reaches the manifold. I have tried giving it a bit of a clean and tightening it, but to no avail. Every time I re-pressurise the system is goes again. Is it as simple as shutting off the water supply to the heating and replacing the...
  14. M

    looking for a Wunda underfloor heating plumber - London

    I'm looking for someone that has experience with the Wunda underfloor heating system. I'm based in Mortlake SW London
  15. Christopher buzzard

    Uponor underfloor heating valve.

    Can some please identify the valve on this underfloor manifold ( with the black wire coming out of the top). Have an issue where the system is turning off every 10-20 minutes and staying off for a while then coming back on again. The room can’t get up to temperature because of this. Power was...
  16. jontyking

    Polypipe underfloor heating not working

    Complete amateur here. I had a Polypipe underfloor heating system put into a new extension 3yrs ago but the plumber who fit it is now no longer available - he's just had a career change, he didn't go out of business. It's just a single zone system connected to my main central heating system but...
  17. kenjiru

    Underfloor heating not working correctly

    I've bought an old house and converted it from radiator heating to underfloor heating. I've reused the old gas boiler Vaillant ecoCOMPACT VSC 206/4-5 90 that had an multiMATIC 700 module already installed. Heating work fine for the first floor, but it does not work correctly for the upper...
  18. PolypipeOverlay

    Pipes going in at angle into Underfloor Heating Manifold Problem?

    Is it acceptable to have plastic pipe going into the manifold at such angles as shown in photo? There is definitely stress on the fittings as the pipe is pulling hard to one side on numerous connections. The manifold does not leak under pressure test. Should it be kept as is if it does not leak...
  19. M

    Underfloor heating, no gas and big boiler - what is this?

    Hello everybody, I’ll need your help! I’ve no experience on this matter... I’m about to buy a flat that has underfloor heating. The flat has no gas and the only source of heating, as far as the agent knows, is what looks like to be a big boiler in the picture. There is a thermostat on the wall...
  20. C

    Air Source and underfloor heating in old bungalow

    Hello. I’m looking for some advice. We had a 1960’s bungalow in Cornwall with a wooden suspended floor. The old oil builder is 20 years old and so we want to replace it. We were looking at a Air Source Heat Pump with underfloor heating but the more we look at it the more concerned we are that it...

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