How To Determine Ac Tonnage From Model Number Goodman. The goodman manufacturing company website provides product specifications, including model numbers, for all current air conditioning units and some older models. Tonnage, air flow, kw, etc.
Some manufacturers bury tonnage or btu information in their model numbers. Just like the nominal size of lumber or an air conditioning filter, the exact cooling capacity may be a little more or less than the nominal rating, but it’s close. Not all manufacturers do this, but most will give you a 2 or 3 digit section that tells you how many thousands of btu/hour your air conditioner can move out of your home.
Alternatively, multiply the length, breadth and height of a room (in feet).
Tonnage, air flow, kw, etc. For example, if your air conditioner is 36,000 btus, you have a 3 ton unit. Divide the answer by 1000. Are located within the oval/round shaped buttons).