Easy fix for a loud Heat Pump

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Every heat pump or AC produces sound. This sound is partly caused by vibrations of the unit. You can mitigate these vibrations pretty effectively.
First check if your heat pump or AC is placed on anti vibration pads. You can purchase these at Amazon (search 'anti vibration pads') or ask your installer.
Secondly check out my easy fix to connect your line set to a piece of rebar. This will distribute any vibrations into the ground before the vibrations can reach your building and disperse through your building materials.
Not mentioned in video, buy recommend: a small piece of foam or rubber between the bar and the line sets that acts as a gasket.
I have no data or measurements but I've noticed a substantial difference after installing the rebar rod.
Materials used:
1 piece 4 ft rebar
Some velcro tape
a small tie wrap
Available at your hardware store for about $10 - $15 total.
By the way: filmed in December 2022. I have no clue why I said: "It's February here in Michigan" :-)

Опубликовано:

12 дек 2022

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Комментарии : 11

@heyheysashak 6 месяцев назад

We just got a heat pump installed and though the unit itself is quiet, it vibrates where it is mounted to our home... This means that inside it sounds like there's a loud truck idling outside our home. I'm going to try this! It's a brilliant and simple fix. If we can bring the vibration noise inside down to a level more like our fridge, we'll be happy! Thanks!

@BartmanMi 6 месяцев назад

Good luck! Keep me updated. If more sound mitigation is needed, it might be worthwhile checking if your wall is insulated and air sealed.

@JanCivelek 7 месяцев назад

Funkflex by torgen is also a solution for noise and vibration

@audiobrad99 5 дней назад

There is a ton of talk online about absorbers, pads, and making sure lineset doesn't touch the structure. But there is almost nothing about using mass (the earth in your case) to absorb the vibration energy. I'm tempted to try your method, but am concerned about the physical contact between the lineset and the rebar. I know a physical connection is the whole point, but I wonder if your method could cause chafing and potential damage to the pipe? I saw one other post where a guy advocated for a similar system, but insisted that a cradle be made and brazed to the tubing. That cradle was in turn brazed to a copper pipe (filled with sand) and driven into the earth. I understand his point, and using all copper eliminates any potential corrosion from dissimilar metals, but the brazing part is not something I want to attempt on a charged line!. I also thought about the possibility of anchoring the pipe to something heavy like a concrete block, but again, I'm worried about unforeseen issues this might cause. I have a tech coming out for routine maintenance and will ask him about these ideas. Interestingly, Lennox recommends two 90° elbows be placed in the lineset before it enters the house to help reduce vibration. Hard to believe that would help much, but it's in the manual.

@BartmanMi 4 дня назад

@@audiobrad99 Good points. You could sandwich some kind of barrier between the lineset and the rod (like a thin piece of rubber) to prevent friction and rust. You could also use a heavy plastic rod, i.e. one of those rods used to tie young trees to make them grow up straight.

@audiobrad99 4 дня назад

@@BartmanMi I think any padding between the line set and the rod undermines the principle involved. We want all the vibration to be transmitted into the rod and ground--any padding would diminish that connection. As for a plastic rod, that wouldn't work either--not enough rigidity or mass to transfer the vibration into the ground. I think you were on the right track with the rebar because it's heavy and stiff, but I will have to figure out a way to make a rigid connection without potentially damaging the copper. Thanks for the idea!

@kennixox262 10 месяцев назад

I'm to familiar with Michigan but in February, I am surprised that there are green weeds and grass in that part of the country.

@BartmanMi 10 месяцев назад

The last line in the description explains your surprise. Funny that's wat caught your attention.

@lindameadows9771 6 месяцев назад

Where do you buy the wrapping for your coils that you have ?

@BartmanMi 6 месяцев назад

I assume you're talking about the black wrapping around the lineset? My HVAC installer put that on when he installed the unit. Maybe you can pick some up at an HVAC contractor (some have a service desk where they sell parts) and put it on yourself?