Tue, 09 Jun 2026 11:53:37 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43464#Comment_43464 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43464#Comment_43464 Fri, 16 Jan 2009 00:33:50 +0000 Rex
I have had a spanner thrown in the solar works by the possibility of installing an ASHP running on E18 (apparently.)

But how noisy is an ASHP? It would be positioned where we are unlikely to hear it, but I think if may disturb the neighbour..

Rex]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43469#Comment_43469 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43469#Comment_43469 Fri, 16 Jan 2009 06:15:50 +0000 leilei the ASHP we made is less than 48 db ( measured at a distance of 3 meters away from the outdoor unit )
hope this helps.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43488#Comment_43488 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43488#Comment_43488 Fri, 16 Jan 2009 10:35:25 +0000 tony https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43556#Comment_43556 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43556#Comment_43556 Fri, 16 Jan 2009 17:25:33 +0000 SimonH
The pool we had in Florida (I know not a very green holiday) had a heat pump and the noise was terrible. Not just the level, but the type of noise. Think of a mains powered electric drill on slow crawl speed. Not a hum, more of a square wave styled hacking sound.

Still, we currently put up with a bubbling gurgling, whirring gas boiler and pump. However - the sound is less "in your brain" and more "in the airing cupboard".

All that said - I think some are quiet. Take care to see whatever you buy in operation first! When it's on full pelt, on a cold day.

Simon]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43558#Comment_43558 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43558#Comment_43558 Fri, 16 Jan 2009 18:04:53 +0000 jezza22
I cannot hear the outdoor unit at all when sat in my study and I have to walk to within a couple of metres to hear the unit outside of the house. If you turn up the heat settings it will get louder and quieter if you turn them down. I've yet to hear it at all unless I'm stood next to it outside. My neighbour hasnt even mentioned it and I'm sure he would if he had heard it. When you get close to it it sounds just like one of those fans on your desk in the summer.

You can hear the indoor unit when it is first getting the room up to tempurature but after that it is so quiet (32dB) that we never notice it.

Hope that helps.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43570#Comment_43570 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43570#Comment_43570 Fri, 16 Jan 2009 19:52:33 +0000 Dantenz https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43588#Comment_43588 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3316&Focus=43588#Comment_43588 Sat, 17 Jan 2009 02:18:18 +0000 MarkK Posted By: RexHi there,

I have had a spanner thrown in the solar works by the possibility of installing an ASHP running on E18 (apparently.)

But how noisy is an ASHP? It would be positioned where we are unlikely to hear it, but I think if may disturb the neighbour..

Rex

they are noisy. You need to locate it so it doesn't disturb your neighbour or your family (i know of one development where the family had an ASBO served because of the noise). You can get internal ashps, ducted for intake and exhaust.

Post your heat load, then we can offer some db levels]]>