HVAC Sizing

Mitch M

Hey Guys. Need some advice. I am a GC and I have a client who replaced one of his units at the beach a couple of years ago. Seems like his power bill is higher than it used to be. I got the information off of the units and size of house and size and location of windows. Any ideas of where I can check to see if the unit is sized right without having to call a local HVAC guy? Do not trust the locals too much around here. Also I don't want a rule of thumb.
Did a survey with a thermacam and things look pretty good. There are some insulation holes but not enough to speak of.

thanks in advance

randomkiller

look up the heat pro guys website, he is supposed to have a heat loss/gain calcualtor on there for free, so I have heard.

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