Identifying Compressors

The HP depends on operating conditions, and therefore cannot be determined from the compressor's appearance or numbers. If the compressor is already equipped with a motor, you can inspect the motor data.

Thank u very much

1 HP = 745 Watts.

As Tornado said, there's a lot more to it that that.

Now, 745 watts can be converted into BTU/hour. 1 W = 3.412142 BTU/hr

Back to ya.

They differ from manufacturers, but usually the model number will have the capacity....You learn these over the years, but to be sure have the distributors numbers in your phone and call them with the model number on the compressor for the rated BTU....For instance....

What the Copeland Compressor model number breakdown is

Example for ZR34K3-PFV-830
Z = Scroll
R = R22 Refrigerant
34 = BtuK/hr or 34,000 Btu/hr and is equivalent to 3 Tons ( an acceptable Btu difference is + or - 3)
K3 = is the revision of this type of compressor and is not important when choosing a replacement
PFV = mounting and voltage (as long as the previous compressor has this, then you are OK)
830 - is the Bill of Material that Copeland assigns. This number changes for all replacement compressors and is not critical.

C = Reciprocating Compressor
Z = Scroll Compressor
P = R410a refrigerant
R = R22 refrigerant
K1 = revision (not important)
K2 = revision (not important)
K3 = revision (not important)
K4 = revision (not important)
PFV = mounting configuration and voltage (this does not change for replacement compressors and just needs to be the same)

sorta looks like 21/2 ton to me you need at least 36k to be a 3 ton, if its a heat pump...even a bit more

Units are identified generally by the nearest half ton...3 ton units are not usually exactly 36,000 btu's, but vary according to design a little more or less, in practice....It's not unusual to have a less than 36k btu compressor in a 3 ton unit, in fact I would say that the rating of the compressor should be taken as HP@12k btu's per, and as units have become more efficient the compressors required are less powerful...ie; 2.5 ton compressor in 3 ton units, should be interpreted as a 2.5 hp compressor in a 36k btu unit....and in the field, the btu output or hp, of a replacement compressor is sometimes changed to better suit the application....In following the SEER ratings as they have increased over the years, this is not hard to understand....Typical 8 SEER units of 20 30 years ago put out half the cooling of 16 SEER units of today using the same amount of electricity, bear in mind that this would be minimum output at peak load, and a lot of the time operate well above this output at lower loads.....

Thank u very much sir.