What size unit?

Old 12-01-03, 10:38 PM
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Question What size unit?

I am about to begin planning a renovation of a old building. Although I will be contracting code required items I need to make some decisions.

My question is: How do you calculate the size HVAC sys for a building? Number of vents? The unit will be gas heat and electric AC.

Old 12-02-03, 03:53 AM
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You can try www.hvac-calc.com/main.asp

I believe the free trial will let you use it once. Otherwise you have to pay for it.
Old 12-02-03, 07:35 AM
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Heat and A/C

Id call some hvac shops and get 3 bids for the job they should work up the heat an AC loss and load. Also how and where they could put new duct work and runs. Also look at www.heatload.com ED

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