Home A/C Question

[BigBlue]

I trying to figure out what ton A/C unit I have so I can start shopping around.
The numbers I believe is needed is 18.3 RLA 102.0 LRA I also pulled manufacture is Copeland compressor Model AD048GD also this is a 1993 model and is crying everytime it's gets turned on.

[Progres1]

RLA is the Normal Running Amperage and the LRA is Locked rotor Amperage

It appears that the compressor is a 4ton

[BigBlue]

Wow does that sound big for a 1650 sq foot house built in 1978 ?

[Vertnut]

Wow does that sound big for a 1650 sq foot house built in 1978 ?
No, it doesn't sound big for that era. That's a little over 400sf a ton. Because of the Seer levels, window improvements, isulation packages, etc., a 3 ton unit would probably work, if the house were updated with other energy products. Ceiling heights, number of windows, and even the direction the house faces ,all come into play when figuring the correct sizing of the system.

[bullet]

The numbers run in multiples of 12 per ton , so a 48 in the number should be a 4 ton.