WWilts Posted November 9, 2020 Share Posted November 9, 2020 What are pros and cons for underfloor vs no underfloor? More elaborate heat exchange systems? Likely need to move from area in a few years so don't want to go over the top with luxury/costs. Link to comment Share on other sites More sharing options...
joe90 Posted November 9, 2020 Share Posted November 9, 2020 (edited) Dead easy and cheap in a new Build, more difficult and more work in a refurb. UFH suits an ASHP set up. Edited November 9, 2020 by joe90 1 Link to comment Share on other sites More sharing options...
tonyshouse Posted November 9, 2020 Share Posted November 9, 2020 Insulation is cheapest long term option 1 1 Link to comment Share on other sites More sharing options...
WWilts Posted November 9, 2020 Author Share Posted November 9, 2020 55 minutes ago, tonyshouse said: Insulation is cheapest long term option Insulation of entire envelope, presumably. Currently quite a lot of glass facing north. Is that foolish? Link to comment Share on other sites More sharing options...
SteamyTea Posted November 9, 2020 Share Posted November 9, 2020 3 hours ago, WWilts said: What are pros and cons for underfloor vs no underfloor? Assuming ground floor, UFH can loose more energy to the ground, which generally has a lower temperature for longer parts of the year. On a second floor, it should realistically make no difference. If by 3 hours ago, WWilts said: More elaborate heat exchange systems you mean mechanical ventilation and heat recovery, then no practical difference as that is to do with air changes and not the losses though the walls, floors, roof, windows, doors etc. 59 minutes ago, WWilts said: Currently quite a lot of glass facing north. Is that foolish? Depends on the view and if you are an artist. If the thermal losses are manageable, then no problem. Near me is a small cove, if a house has a south view, it would be of industrially scarred land, but the north view is of the Atlantic. 1 Link to comment Share on other sites More sharing options...
WWilts Posted November 9, 2020 Author Share Posted November 9, 2020 2 hours ago, SteamyTea said: Assuming ground floor, UFH can loose more energy to the ground, which generally has a lower temperature for longer parts of the year. On a second floor, it should realistically make no difference. If by you mean mechanical ventilation and heat recovery, then no practical difference as that is to do with air changes and not the losses though the walls, floors, roof, windows, doors etc. Depends on the view and if you are an artist. If the thermal losses are manageable, then no problem. Near me is a small cove, if a house has a south view, it would be of industrially scarred land, but the north view is of the Atlantic. Very illuminating points, thanks Link to comment Share on other sites More sharing options...
tonyshouse Posted November 9, 2020 Share Posted November 9, 2020 If you can afford it a physics model of the house will help you by informing decisions and optimising things, lots of glass = lots of problems with heat loss and heat gains, west facing can be worst for overheating 1 Link to comment Share on other sites More sharing options...
WWilts Posted November 10, 2020 Author Share Posted November 10, 2020 10 hours ago, tonyshouse said: If you can afford it a physics model of the house will help you by informing decisions and optimising things, lots of glass = lots of problems with heat loss and heat gains, west facing can be worst for overheating Thanks! Noted. Link to comment Share on other sites More sharing options...
Dave Jones Posted November 10, 2020 Share Posted November 10, 2020 i wouldn't say underfloor is cheap its probably 4-5x more expensive than a gas combi and rads. All depends on what spec you are aiming for, bargain basement the go for it. If you are going to live there a while or want to realise top end price for it then look at underfloor, 2600 ceilings etc Personally would never go back to rads, even upstairs now. Link to comment Share on other sites More sharing options...
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