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Old 06-14-2010, 08:19 PM   #1
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Old vs New Compressors

Today, I saw a AC compressor/condensor on a Cape Cod type residence that is 1550 square feet that appeared 1/2 the size of my 2-1/2 ton AC compressor. My home is listed just under 1200 square feet. I could not see anything on the nameplate as it was washed out. Other Cape Cod house's have larger AC compressors/condensors and I checked the name plate of one and I can see the number 36 on the model number and assume it means 3 tons.
So the question is: Did the manufacturers make smaller 3 ton compressors/condensors 10 or 15 years ago then what I see now? The unit that I saw was about 2 feet high from the ground.

I am shopping for a house and do not want to purchase something that looks undersized.


Last edited by rjordan392; 06-14-2010 at 08:39 PM.
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Old 06-14-2010, 09:04 PM   #2
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Yep. Lower SEER rated units were much smaller then todays units. My 2 ton 19 SEER is huge compared to many of the old 2 ton units.


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Old 06-14-2010, 09:13 PM   #3
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Yes sir, Carrier had the round cute little trash can sized unit with tinsel coil that fit neatly on one sidewalk block. Quite a few of those 20+ yr old birds where I am. Huge problem in row houses and condos trying to fit a modern unit in place of the small ones. The condensor coil has to be larger to get a higher SEER rating. Dissipates the heat faster, lowers the workload on the compressor and the amount of electricity it uses. York apparently makes a side discharge/sidewinder that may have a smaller footprint or fit better for some jobs.
"Cut it twice and it is still too short".
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Old 06-14-2010, 09:42 PM   #4
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Thanks, Marty and Yuri,
It must have been one of those 20 year old units.
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Old 06-15-2010, 06:38 AM   #5
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As above. The higher SEER units are physically larger.
A 13 SEER 1.5 ton is physically larger then a 20 year old 3 ton unit.
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