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underfloor heating

Underfloor heating and cooling is a form of central heating and cooling that achieves indoor climate control for thermal comfort using hydronic or electrical heating elements embedded in a floor. Heating is achieved by conduction, radiation and convection. Use of underfloor heating dates back to the Neoglacial and Neolithic periods.

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  1. L

    Black flow meters on new CH system

    Hi Is it normal to have very black UFH flow meters on a relatively new manifold (see image)? (Note the two clear flow meters on the LHS are for circuits which are not yet operational, so no water flow through them as yet.) Background is that I have an unvented system boiler CH system...
    • LE4R
    • Thread
    • america black flow flow meter meters new system underfloor heating usa
    • Replies: 10
    • Forum: USA
  2. C

    Underfloor Heating Suggestions

    We've just moved into a house where there is underfloor heating in the lounge. It's not a big lounge yet there are 2 x Heatmiser PRT-WTS controllers - one for the front and one for the back. The Heatmiser controllers no longer work (Heatmiser say they're too old and I need new ones) but they...
    • capezz
    • Thread
    • heating heatmiser pulsar suggestions underfloor underfloor heating
    • Replies: 11
    • Forum: Central Heating Forum
  3. J

    Underfloor heating is stuck on - actuator issue?

    Hello. I am here for some advice please. We have a water underfloor heating system in our house and have recently had some issues with one of the zones seeming to overheat with the heat still being sent despite the thermostat not sending demand or even being on an all. These are all new...
  4. D

    Viessmann Vitodens 100-w trouble maintaining central heating temp

    I have a 2017 Viessmann Vitodens 100-W condensing gas boiler connected to a radiant floor heating manifold. No external pump. 120m2 floor area. Recently had the annual service. Boiler has been on for about a week now heating the underfloor cement slab. It is my impression that the boiler seems...
    • dr911t
    • Thread
    • 100-w america central central heating central heating system heating temp trouble underfloor heating usa viessmann vitodens
    • Replies: 99
    • Forum: USA
  5. D

    Dual System

    My issue is as follows. We have a combi boiler and a dual CH system one part underfloor &one part radiators. These are controlled by two thermostats . I’m sure the systems used to operate separately ie the underfloor or the radiators could be on or both depending on the thermostats. Now we’ve...
  6. H

    Underfloor Heating Pump goes into a blocked error (Grundfos UPM3)

    Hi all! Went to stick the underfloor heating on and the pump started making a weird noise and the first red LED and the last amber LED are on - which per instructions means that the pump is blocked and it is necessary to deblock the shaft. It has a deblocking screw in the centre of the control...
  7. A

    Insulation installation around kitchen prior to underfloor heating

    Hi everyone. A slight conundrum im hoping to get some educated advice on from people who actually know. Ill be having the whole of my downstairs dug up in order to install insulation (none present) with a 75mm screed on top. Ill then have a wet system underfloor heating installed. My...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
    • sbracken88
    • Thread
    • america central heating system heating ufh help underfloor underfloor heating usa wiring
    • Replies: 6
    • Forum: USA
  12. 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...
    • Peterdart
    • Thread
    • america central heating system heating underfloor underfloor heating usa
    • Replies: 7
    • Forum: USA
  13. S

    Air to water heat pump with ufh, how many zones?

    Hi, For a small house (100m2) with and air to water heat pump and underfloor heating, how many thermostatically controlled heating zones would you recommend? There are 3 no. bedrooms, a bathroom, hall, sitting room and kitchen/dining room. The house will be rented out so providing a zone for...
    • surfcob
    • Thread
    • air air to water forum heat heat pump plumbing pump ufh underfloor heating water zone zones
    • Replies: 3
    • Forum: Plumbing Zone
  14. 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...
  15. 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...
  16. 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...
    • UFH_MONO
    • Thread
    • america central heating system flat heating help hiu not working power flush underfloor underfloor heating usa working
    • Replies: 9
    • Forum: USA
  17. S

    Mixing Pressure Problems

    I have a rather large wet UFH system. Water is flowing around the system, but I don't get any (or minimal) hot water injecting from the primary boiler flow into the ufh system. this means the mix temp never gets above 20 degrees. I think that the ufh system's pressure might be too high which is...
  18. 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...
  19. 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...
    • sj007
    • Thread
    • america central heating system heating underfloor underfloor heating usa
    • Replies: 7
    • Forum: USA
  20. R

    Underfloor heating clean

    Not cleaned one before any tips before i get involved, not sure its a problem or boiler People tryimg to generate work (Boiler insurance engineers)
    • Ricky
    • Thread
    • america central heating system clean heating underfloor underfloor heating usa
    • Replies: 0
    • Forum: USA
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