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Old 08-09-2010, 01:03 PM
 
9 posts, read 18,911 times
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I have noticed that many of the older homes have the outside AC unit mounted on the roof, is there any benefit to this aside from watching the AC repair guy fall off your roof?


The only thing that I have found out so far is to make sure if I get a 2 story house that it has dual AC units.
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Old 08-09-2010, 01:25 PM
 
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I guess the benefit in this day and age is they're harder to steal the copper from. Make sure the A/C is properly isolated, some of the ones that arent will literally vibrate the entire structure and make it uninhabitable for anyone with ears.
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Old 08-09-2010, 02:06 PM
 
Location: NW Las Vegas - Lone Mountain
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Roof mounts are inherently superior in all ways except aesthetics...

You always lose when you break a single unit into two and separate them...
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Old 08-09-2010, 02:48 PM
 
Location: ( ͡ ͜ʖ ͡) (╯□)╯︵ ┻━┻ ̡
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I have also heard that HVAC maintenance people will charge more if the unit is on the roof. Dont know if its true.
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Old 08-09-2010, 03:37 PM
 
Location: Las Vegas
113 posts, read 253,288 times
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Default Yes

Quote:
Originally Posted by von949 View Post
I have also heard that HVAC maintenance people will charge more if the unit is on the roof. Dont know if its true.
Yes,that is true,although they may not tell you that is the reason.
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Old 08-09-2010, 03:49 PM
 
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If the HVAC unit needs to be replaced, You have the extra cost of renting a small crane to get the units up and off the roof.
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Old 08-09-2010, 04:08 PM
 
Location: Las Vegas
681 posts, read 3,963,229 times
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Quote:
Originally Posted by bmac88 View Post
Yes,that is true,although they may not tell you that is the reason.
Not necessarily true. I know alot of techs here in town that rather be on a roof anyday, over crawling in a 160 degree attic to service an airhandler.
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Old 08-09-2010, 04:10 PM
 
Location: Las Vegas
681 posts, read 3,963,229 times
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Quote:
Originally Posted by mojavedxer View Post
If the HVAC unit needs to be replaced, You have the extra cost of renting a small crane to get the units up and off the roof.
The cost of replacing a rooftop unit is alot cheaper than a split system.
Ever tried to get one of those furnaces back down through the crawl hole? They dont fit!
I can change a rooftop unit for alot less then a split system.
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Old 08-09-2010, 04:13 PM
 
Location: Las Vegas
681 posts, read 3,963,229 times
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Quote:
Originally Posted by olecapt View Post
Roof mounts are inherently superior in all ways except aesthetics...

You always lose when you break a single unit into two and separate them...
I find split systems also tend to leak more. I here stories all the time of linesets getting damaged during construction.

Most of the time when someone complains that they have to constantly have refrigerant added every year, 9 times out of 10, it's a split system.
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Old 08-09-2010, 04:16 PM
 
Location: Las Vegas
113 posts, read 253,288 times
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Default Not their call

Quote:
Originally Posted by tiger08 View Post
Not necessarily true. I know alot of techs here in town that rather be on a roof anyday, over crawling in a 160 degree attic to service an airhandler.
That may be true,but I know the owners of 2 AC companies that both told me they charge extra for roof units on residential calls.
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