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[Solved] Daikin Altherma noisy heat pump - help and advice needed

Clairelp · 2024-02-23T20:43:52Z

Hello, We recently had a Daikain altherma 11kw heat pump installed. We are happy with how it’s heating our home and the costs, but I hate the thing due to the noise in our bedroom. When we had our original survey for the heat pump, we were told we would not hear it indoors. I thought I would hear it in the lounge, as you can see it’s next to French doors. However, it isn’t a problem in the lounge as much, but the noise is so annoying in our bedroom. When it’s turned off, it’s such a relief, and I can’t sleep with it going. I'm not sure if it’s from the unit or the flow and return. It’s about 25-30 decibels inside the room. While it is quieter than our old oil boiler, the oil boiler was in our utility room, so we didn’t hear it, and it was only noisy on start up where as the heat pumps run a lot, especially in winter. And this is on the bedroom wall. So in the evening, I try to get our toddler to sleep, and it drives me mad. While we do live in quiet location but we do live next to a military air base so we are used to noise, but this is just annoying constant noise. Turn it off; it’s like being out of a loud bar and being relieved to have peace when it’s off. In picture red I marked is bedroom and where bed is. Any advice? I would be very grateful. if anyone managed to reduce sound. We had to use our savings to buy it so don’t really want to find money to replace it and going green was and is important to us. Thank you

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Toodles

(@toodles)

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01/03/2024 7:56 pm

@clairelp Sounds hopeful…. Toodles.

Toodles, he heats his home with cold draughts and cooks his food with magnets.

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KenBone

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01/03/2024 8:52 pm

@clairelp well that's a full house for me, after everyone here mentioned pipework clipping , fan noise, pumps, auto air vents. Need to listen to experts that install this stuff every day. Glad it's sorted for now.

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Clairelp

(@clairelp)

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Topic starter 02/03/2024 8:20 am

Nope no luck.we tried setting back again and the defrost cycles came on woke us up. It even was vibrating our bed. I had noticed it doing this before and my husband I didn’t think he believed me till last night.

i will call them back again, as it’s definitely not normal to be vibrating furniture.

I might see if they can turn the buffer off, as this is what is causing the loud unusable noise not the ashp. During the night when it’s doing its anti pipe freeze cycle it uses the vessel and that’s when it’s vibrates the furniture.

To add insult to we also have a pipe come though our ceiling. They said it’s where during install they had leak made ceiling wet and the must have pushed it through. So we now currently have a hole on ceiling playroom. 😩

I also did ask about the anti vibration clips and they said they don’t use them.

This post was modified 1 year ago 2 times by Clairelp

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Mars

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02/03/2024 11:34 am

@clairelp I did think the solution sounded hopeful, and am disappointed to hear it didn't work. Please keep us updated.

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Toodles

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02/03/2024 11:42 am

@editor Yes indeed! A great shame as it sounded so hopeful; so I take it the system will be being turned off at night for a few more days. 😒 Hope your installers return soon and find the culprit. Regards, Toodles.

Toodles, he heats his home with cold draughts and cooks his food with magnets.

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KenBone

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02/03/2024 3:37 pm

@clairelp where are you Claire

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Clairelp

(@clairelp)

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Topic starter 03/03/2024 7:44 pm

@kenbone we are near Bury st Edmunds in Suffolk.

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KenBone

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03/03/2024 11:31 pm

@clairelp I was up there recently near NewMarket, not due up there again for a while.

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Clairelp

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Topic starter 03/03/2024 11:40 pm

sorry didn’t get change to get in loft till weekend.
@sure the pipe is 28mm at top of volumiser tank in loft and 22mm bottom.

Daikin ashp 11kw.

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KenBone

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04/03/2024 12:12 am

@clairelp

The pipe on that bar looks the prime suspect for a noise issue, should be able to lift slightly to get some insulation in-between pipe and metal bar.

The other part is the auto air vent, just undo the little black (assuming it's closed)

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Mars

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04/03/2024 11:41 am

Not sure if this is something @louise-howlett can potentially assist with?

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Louise Howlett

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04/03/2024 5:00 pm

@editor Thanks for the enquiry I'll get my technical buddies to take a look at the photos on this thread. There can be several causes of noise and vibration. We do cover the Bury St Edmunds area.

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