Our advice would free but following it will cost you plenty for trial runs on equipment. If quite operation was a condition in buying the unit,the installer needs to handle it for you.

The source of the noise needs to be accurately identified and several db readings at location need to be taken.

Something is wrong with the install if unit is noisier than a 15 yr old Goodman.

IMO

Thanks, klem1.

I raised my concerns regarding noise with the sales guy when he came out to make a proposal and then with the installer the day it was going to be installed. Each time I was assured that this unit would be much quieter than my old one.

Within a couple of days of installation in November, I contacted the installer to complain. After doing some exploration, they proposed ordering a Trane soundblanket and said that it should make a difference. The soundblanket took almost two months to get installed (late December), and didn't make a discernible difference.

After I complained that the soundblanket didn't help, they came out last week. During that visit, they said that since the unit appears to comply with Trane's reported noise ratings on Trane's website - although with my son's window open, it pretty much hits the reported 74dbs using an iphone app (it's actually louder above the unit than next to it) - they can't replace it under warranty etc. and they can't resell it as new equipment so there's not much they can do.

They have offered to move the unit to my driveway, but that is about 25' from its current location, would take up a fair amount of space in the driveway, and runs the risk of theft etc. unless I build a fence around it.

Any ideas of how to convince the installers to try another unit?

Thanks so much in advance.

As tiger said,the issue should be addressed using science and technology ,not guess,gosh and by gosh. I would do an end around on the dealer going directly to the factory rep. Why is the boy's window open while a/c is running?

Have you unequivocally determined if it is the outside heatpump unit making the noise or the indoor air handler?

SKTN77a - Definitely the outside unit. The air handler is very quiet (other than some rumbling in one of the return ducts that the installer also seems unable to address).

Klem1 - his window isn't usually open when the hat pump is running obviously - I just wanted to test and see how loud the sound was outside, three stories up from the unit. We have pretty good windows too, but it sounds like an a/c wall unit is running in his room whenever the heat pump is running. How would I go about making contact with the factory rep?

And tigerdune, what tools/tests would you recommend that they perform?

You need a db reading independent of your installer for comparison purposes. I have no experience of the db meter iphone app. What did it read?

And as said previously, you will never get me to believe an old 15 yr Goodman condenser is quieter than a properly installed XR17.

Take reading several times over the day and note outdoor temp at the times. Just to see if there is any variance.

IMO