# Thread: How Do I determine the tonnage of my A/C unit?

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## How Do I determine the tonnage of my A/C unit?

Where on the information plate on a standard exterior residential A/C unit will it tell me the tonnage? Is there a mathmatical equation between the FLA and RLA? Thank you for your professional advice.

2. ## Usually ...

it's part of the model #. Post make, mod and ser #'s and we'll try to help

3. No.
The model number tells you.

4. ## WHY.....

Makes a good trivia question at the next get together....

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the model number is 561CJ036-E Whick tells me the tonnage? Thank you

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Originally Posted by gregp
it's part of the model #. Post make, mod and ser #'s and we'll try to help
the model number is 561CJ036-E Whick tells me the tonnage? Thank you

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036 = 36,000 BTU's (nominal). That Bryant's a 3-ton unit.

8. the 036 says 36,000 btu or 3 ton....

You know we have to kill you now.... please leave us your address so we can keep the secret of the code....

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Originally Posted by RyanHughes
036 = 36,000 BTU's. That Bryant's a 3-ton unit.
perfect. thank you

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Originally Posted by sline-dawg
the 036 says 36,000 btu or 3 ton....

You know we have to kill you now.... please leave us your address so we can keep the secret of the code....
your secret is safe with me

11. May you live long and prosper.....Peace be with you.

Do not be afraid to ask for help.

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LOL sline-dawg. It must be Friday. I added nominal in my original post. The unit may not, and likely doesn't, get precisely that many BTU's (it can vary slightly). Are you planning a replacement, having issues, or just wish to know the tonnage?

13. He wants to move it, and wants to know how much it weighs.

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