Help on figuring out info on my ac unit.....

Old 06-21-10, 10:10 PM
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Help on figuring out info on my ac unit.....

Hey guys, i need to provide some info to a repairman over the phone and I cant figure it out. I need to know what HP my compressor is and what ton my unit it. I cant ready most of the print on the compressor label. I can see its a benchmark brand, needs 203-230volts, is a one phase and is 60hz. Is there any info that give a rough idea what horsepower it might be?

As for the ton size, if I take off the lid covering up the cable connections, there is a wiring diagram and fluid chart taped it to the back of it saying those readings are for a 4 ton unit, is taht a generic reading to go off of?

If it helps my house is a single story 1754sq and the unit is made by weatherking.

Old 06-22-10, 04:40 PM
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the model number on the outdoor condenser should tell you tons. example model number: m/n: Hk0014804jk. ignore all but the 48, ignore all but multiples of 6. if that was a 12 instead of a 48 it would be 1 ton, but 48 is 4 tons and and if it was 42 it would be 3.5 tons and etc. and horsepower for a compressor? never heard of it
Old 06-22-10, 04:53 PM
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Rizer, I wonder why the repairman needed all that info before his visit?

Maybe I'm paranoid - but was he intending to throw a replacement unit on the truck, and sell it to you?

4 ton is unrealistic for 1754 sq ft. But I don't know where you live or other facts.

P.S. I just checked your public profile - you live in the Pheonix area. For your relatively small living area, would a swamp cooler work? Much cheaper.
Old 06-22-10, 06:07 PM
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In S Texas where we design around 98 degrees ambient, we'd probably use a 3.5 ton unless there was something unusual. Phoenix is hotter, so I wouldn't doubt a 4 ton
Old 06-23-10, 08:47 AM
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I don't know why the tech would ask for the horsepower, but the old rule of thumb was 1 HP = 1 ton = 12, 000 btuh.

With today's higher efficiency units, the horsepower/btuh relationship is probably a bit different, but that's what we were taught in the early 70's.
Old 06-23-10, 03:59 PM
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If I remember right, 1 HP=2500 BTUh.

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