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

[sline-dawg]

Hey Ryan... Had a c3-51 Lennox coil mated to a Bryant 036..... What do ya think that combo had going.....


BTW... both were dirtier than .....at least my mind..

[RyanHughes]

Who knows... was the air cold enough?

[72cool]

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.

[714snoopy]

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!

[beenthere]

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.