It’s as noisy as an air conditioner. Because it is an air conditioner — just run in reverse. Some AC compressors are noisier than others depending on manufacturer and quality.
this post was submitted on 03 Jan 2024
61 points (100.0% liked)
Ask Lemmy
23938 readers
1455 users here now
A Fediverse community for open-ended, thought provoking questions
Rules: (interactive)
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
Reminder: The terms of service apply here too.
Partnered Communities:
Logo design credit goes to: tubbadu
founded 1 year ago
MODERATORS
Just replaced a couple of 25 yr old ACs with heart pumps and this is the answer.
That said, the two noisy parts are in my basement and outside, so meh, whatever. It's never bothered me. Every now and then I'll be in the basement when it kicks on, and it's mostly just reassuring, like at least that things still working fine.
13 year old heat pump owner here. It sounds like a normal AC running outside. It gets a bit loud in certain moments when it runs some exhaust cycle - not sure of the term for it - but that just happen sporadically here and there and lasts no longer than a few seconds.
The "exhaust cycle" is defrost. When running in winter heat pump mode the outside coils will freeze over and must be periodically defrosted by warming them back up, else the system will stop moving heat effectively.
Varies by heat pump but some simply have a valve that self recirculates the refrigerant without entering the house, as all the compressor power turns into heat work to melt the ice, and is also why they get noisier.
Yes yes! Thank you for filling in that info gap.
I moved into a place with a heat pump for the first time recently and mine is definitely noisy, or more noisy than I would prefer. It's not terrible when you're inside near where it is but it is noticeable. It's also around 10 years old and I believe newer ones are supposed to be quieter.
Heat pumps only last about 15 years so yours may be noisier due to wear and age. I just had a really old one replaced and my new one is a lot quieter.
That's what I'm thinking, it also may not be installed very well which could be a factor. It's not quite level, which is supposedly not good for them. I'm planning on replacing it within the next year or three depending on budget and how well it holds out. It seems to work great otherwise, it definitely is much more efficient than anything I've had previously.
Also depends on whether you get air source or ground source. Ground source lasts a lot longer, and is way more efficient, but costs more to install up front.
I had a heat pump and you could barely hear it outside. I had to be within 10ft to hear it running. It could be an age thing too. Mine was installed within the past 3 years, so that probably helps too.
My downstairs is heated by a cold weather heat pump, my upstairs by a furnace. In extreme cold snaps, I noticed the heat pump sound when I'm directly on the other side of the wall to it. But I can still easily tune it out and sleep with it going full blast.
I can't hear the outside unit running from inside if that's what you're wondering
Like with AC units, there are quiet heat pumps and loud heat pumps.
I would look online for reviews that talk about sound. Look for information about decibels and or sones. A lot of manufacturers publish that info.
You might also want to see if anyone has published anything about the sound your models put out. That way you have a baseline number to compare new unit specs to.
We just got 2 new Carrier Infinity 24 heat pumps and I don't think I've ever heard them running (except for the fan pushing air through the ducts, but that's part of a traditional furnace too). It's an expensive system that is advertised as being particularly quiet, and I think they deliver - I haven't noticed any change in noise levels. One of them had an issue for a while so we ran the backup gas furnace instead, and I couldn't tell the difference between the one that was using the heat pump and the one that was using gas.
So it's possible to get a quiet heat pump, depending on the model.
We have used heat pump for A/C and heat in Florida for, well, I don't know how long but the house I bought in the early 90s had one, and it was old enough we had to replace it, and the replacement lasted 20 years, so it's not a new technology.
Yes they make noise, especially when starting up, but as someone else noted, your windows are closed when you run it, it's not that loud. Not as loud as window units were.
We have two buildings on our property with mini split heat pumps. Both are very quiet. They can be a bit noisy indoors if you turn the fan above the medium setting. It's basically silent on the low fan setting. Low is plenty for both heating and cooling.
Typically when your AC/heat pump are running your windows are closed.
My heatpump in my old apartment was much quieter than my new apartment with resistive heating. This one is fucking loud :(
Also, damn my power bills are way more pricy per square foot with resistive. Huge bummer.
If those AC units are old then they can be noisy because of their original design, bearings wearing out, or rubber dampers deterioration.
New units aren't what I'd consider really noisy. More of a rushing of air (from the fan) instead of mechanical noise (from the compressor).
Mine isn't especially loud but my nextdoor neighbor's is.
Heatpumps are in par with AC. I'm noise sensitive dye to poor hearing and sometimes turn it off to help me hear better.
Visited family for new years and slept next to one. It made about as much noise as their fridge. It's most likely a newer model.
I have one a drinking water one in the basement. When I'm in the basement, it's fairly audible, otherwise can't hear it at all.
I talked to a tech about it. His advice was that it depends on the type. Heat pump water heater is about sound of a stove exhaust fan, with a higher pitch. No bass.
Heat pump for room heating is lower pitch. Not bassy. But there are regs in some cities about how close to property lines they can be.
We have a heat pump. It's a little louder in the winter, but not by much. It's very quiet other than the odd hissing sound it makes when defrosting the unit.
You might be able to reduce the noise with some fencing or plants. Some bushes, placed where they won't disrupt airflow, will definitely reduce the noise.
At my mom's place
air-source heat pump, double-paned windows
I can't hear the thing at all from inside the house, and can only hear it if I go on the side of the house where it's operating, which doesn't get a lot of foot traffic. You can hear the fan there.
Generally, I haven't heard people complaining about it in the US. I have seen some people talk about it recently in the UK, which is in the middle of a push to transition to them, and I'm wondering if that's because townhouses are more-common there, with houses packed closely together.
I understand that you can get noise-reducing enclosures:
https://www.silent-mode.net/domestic-equipment.html#/
There are also water-source heat pumps. I don't know how the noise differs, but I'd bet that it's quieter, because you're moving water through a pipe rather than a lot of air. However, their installation cost is considerably higher (though their energy efficiency is also higher).
Mine is not hearable from the inside and only hearable on the same side of the house, but I guess it depends heavily on the model. I. The summer it only runs for hot water - maybe 4 times a day.