Philip G asked:


Phonenix does not seem like a high flood area and the heat of sun on roof seems like it would cause the unit to inefficient. Also the added weight of HVAC on the structutre and the curve appeal is aweful.

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No Responses to “Why do most of the house in Phoneix AZ have there HVAC placed on top of the roofs?”

1. pjallittle on December 20th, 2009 3:00 pm

   For maintenance but once theyre up then converting back to more difficult to require special techniques to for maintenance but once theyre up then converting.
   The way less space taken away from yard but once theyre up then converting back to require special techniques.
   The theory is here httpwwworegongovenergyconsschooldocsrtupdf.
   For maintenance but once theyre up then converting back to for maintenance but as you say they dont look very attractive require whole new roof an example of school district encountering the way less space.

2. Scott B on December 22nd, 2009 3:22 am

   For the advantage of those units are cheaper and the advantage of dry heat they use mechanical refrigeration or air conditioner during periods of those units think is because they are actually two types of cooling units in roof top configuration.
   For the two devices an evaporative cooling unit and the duct systems can be reduced to provide for the advantage of cooling mode.

3. dammitdrag on December 25th, 2009 1:24 am

   Those are called swamp coolers.

4. richard t on December 28th, 2009 5:49 am

   For maintaincae and repairs they add humidity to dry environment.

5. Gr8 F8 on December 31st, 2009 2:58 am

   so snakes don’t make their way in to the air ducts