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Old 08-05-2024, 09:15 PM
MplsPete MplsPete is offline
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Default What is that big box?

I recently spent two weeks in an older home in Alhambra, probably built in the late 90s. I like to look at the mechanical systems and try to figure out how they work.
In the garage, the HVAC unit sat atop a large box-like structure. Probably 3' x 3'. I've seen the same set up in pictures of other homes. So, what is the purpose of this? Is it some sort of air return system for the Air Conditioner? Just a stand to support the air exchanger?