Author Topic: Large HVAC mounted on edge of next door apt building rooftop  (Read 3625 times)


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Large HVAC mounted on edge of next door apt building rooftop
« on: August 19, 2012, 12:30:21 PM »
My next door neighbor is a 50 unit or more, 6 story apartment building.  Their roughly 10-15 ft tall HVAC is situated at the edge of the rooftop closest to me.  When it kicks on,  my wife and I can hear it even with the back doors and windows closed.  Open window sleeping, even with earplugs, doesn't work well.  In addition to the noise coming directly into our apartment, it bounces off two flat surfaces from other neighboring apartments, making it even louder.

Another neighbor has approached the manager onsite about installing baffles or other soundproofing but they said it would cost over $10,000 and therefore refused to do anything except tune up the unit.  They have been, shall we say, difficult to deal with.  I find the $10k price tag hard to believe.  Are there recommendations for alternative approaches or places I can go to get an estimate without direct access to the unit?

Randy S

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Re: Large HVAC mounted on edge of next door apt building rooftop
« Reply #1 on: August 24, 2012, 03:16:36 AM »
That thing is a nightmare! you cant even get a wall or partial enclosure around it to even reflect the sound away from the view point you show.. I can believe the 10K estimate, actually a steal of a deal "if" they can get a dramatic reduction.
If you have to do this from your place, I would start with the windows and doors especially a sliding glass door. This will dictate the maximum reduction possible. I would advise you to install a second set of STC rated windows for best results if you can afford to. If not the next best thing would be our magnaseal system with 3/8" acrylic panels.

Randy Sieg

Super Soundproofing Co
Ph. 760-752-3030