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.

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

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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.

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

6. 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 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

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

Do not be afraid to ask for help.

9. No.
The model number tells you.

10. WHY.....

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

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Yes sir

The model number gives you the tonnage. You will see a number such as 36 42, 48 ,54 etc.Somewhere in the model #. 36=3ton 42=3 1/2 ton so on.

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Whats my tonnage?

I have an old Sears and Roebuck unit. Can you tell me what the tonnage of my system is? I want to replace my failing condenser outside.

These numbers are from the evaporator in my attic:

Model: 867.813150
MFR. No.: 64755
Type No.: 55-94753
R22: 29oz

So, there is a "50" in the model number. Does that make it 50,000 BTU for about a 4 Ton unit?

BTW, the outside condenser/compressor eats about 25AMPs on one of the 110Volt legs . What can I expect a new unit to pull?

Any recommendations on what to replace the condensor outside with (Brand)?

Thanks a TON!

13. You need to replace both indoor and outdoor unit.

Can't tell you by that model number. But a load calc can tell you what size you need.

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