Green Building Forum - MVHR and hot air heating external vents Tue, 19 Dec 2023 08:26:43 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 MVHR and hot air heating external vents http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261797#Comment_261797 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261797#Comment_261797 Sun, 01 Oct 2017 09:10:16 +0100 morsing
Part of our annual hot air system service is to check the rooms with the inlet grilles have external vents. As part of installing MVHR I would want to block those up, but would the gas inspector be happy with that?

Thanks]]> MVHR and hot air heating external vents http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261800#Comment_261800 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261800#Comment_261800 Sun, 01 Oct 2017 09:56:35 +0100 tony MVHR and hot air heating external vents http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261817#Comment_261817 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261817#Comment_261817 Sun, 01 Oct 2017 19:43:03 +0100 morsing
It recirculates and I think it's open flue but I'm not an expert. Mid-70s build, air vents in all rooms.

Thnaks]]> MVHR and hot air heating external vents http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261818#Comment_261818 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261818#Comment_261818 Sun, 01 Oct 2017 20:07:01 +0100 tony
Undercut doors and run is as a recirculate system.

For condensation problems beware of furniture against outside walls restricting air circulation and heat from the room. Some info here http://readinguk.org/draughtbusters/galleries/condensation/]]> MVHR and hot air heating external vents http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261819#Comment_261819 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261819#Comment_261819 Sun, 01 Oct 2017 21:28:28 +0100 djh
Posted By: morsingMid-70s build, air vents in all rooms.

I had a house like that in the mid 70s but as I recall it just had one big intake in the hall at the bottom of the stairs and outlets in every room.

Has the boiler/furnace been updated or replaced since then? I'd think a 1970s unit would probably be very inefficient.]]> MVHR and hot air heating external vents http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261826#Comment_261826 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15325&Focus=261826#Comment_261826 Mon, 02 Oct 2017 11:00:42 +0100 morsing
Boiler is new(-ish) from 2010.

Thanks]]>