HVAC Size

[ballinrouge]

How do you tell how big a unit is and how big it needs to be sufficient. I was told 1 ton for every 1,000 feet, but don't really know.

[beenthere]

A load calc to tell what capacity you need.

http://hvaccomputer.com/talkref.asp

[fotofx]

[fellowlucky]

There is a rule of thumb method, and it works. SOMETIMES! It is not advisable to simply use a general rule as you don't account for heat load. It can be a costly mistake. If you want to know the size of your unit you have to decipher the nomenclature on the data plate.

[AirTechMech]

There is a rule of thumb method, and it works. SOMETIMES! It is not advisable to simply use a general rule as you don't account for heat load. It can be a costly mistake. If you want to know the size of your unit you have to decipher the nomenclature on the data plate.

Yes and the rule of thumb is, there is no rule of thumb period.

[air2spare]

doing a whole house load calculation is quick and simple just make sure you use an "approved" method