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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]It is a  construction "crime"  to put any component of hvac in an "unconditioned" attic.  You are fighting  nature at 160F temps to cool below, even if well insulated, which contractors rarely do.  At some point there will be code to  to outlaw bad practice.  [/quote]

As an HVAC contractor I can't see how the insurance industry hasn't forced a code change to disallow mechanical equipment in unconditioned spaces.  I cannot begin to tell you how much property damage and even near deaths I have seen over the years.  [/quote]

Near deaths and property damage? From what?[/quote]

Near Deaths:

Brother & Sister In Law had a gas furnace in their attic zone.  Sister in law was putting clothes away in their bedroom closet on afternoon and noticed the ceiling was glowing orange after she flicked the light off.  Most of their upstairs ceiling collapsed raining down flaming debris as she ran down their stairs.  If it had happened a few hours later while they where sleeping it would have killed the whole family.  Fire marshal pinpointed a gas leak in the attic supply line.

Customer had residual water in their condensate line freeze and crack over the winter.  First night they ran the A/C the following spring the water leaked on plaster ceiling in their daughter's bedroom.  About 800 lbs of wet plaster fell on the bed.  Thankfully the daughter was at a sleepover.  I could not believe the amount of damage the plaster did to the wood furniture in the room.  You would have thought an anvil got dropped from an airplane; headboard was splinters.

Damage:  Fire/ Water obviously. The general homeowner would be pretty shocked by what the inside of an air handler looks like after it hangs out a few summers in an unconditioned attic or crawlspace; mold     [/quote]

I agree that HVAC equipment should never be in unconditioned space. But I have to play the skeptic on the first one. How did being in the attic cause the gas leak? It sounds like it could have happened anywhere in the house. [/quote]

A good friend fell through the attic ceiling two stories below.   He went up to attaic to investigate a leak (AC condensate) and then carelessly stepped onto the attic floor (drywall)....you can guess what happend next.   He survived but took years to recover.   This is why I call it a "crime".....[/quote]

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