Replywhy guess, do a load calc
Regular Guest
I need to replace the condensing unit for a homeowner and I am not sure what size the old one is. Here is the problem, the units data tag is sun bleached and unreadable. The compressor also has no legible numbers. The homeowner says another A/C man told her it is a 1 1/2 ton unit.
The old unit is for an earth contact home. It has a 5/8 suction line and 3/8 liquid line. The furnace is a 55,000 BTU input/43,000 BTU output.
I tend to think 1 1/2 ton is correct but I just wanted some feedback.
Any guesses?
TIA!
Professional Member
why guess, do a load calc
Professional Member*
Perhaps, it's More FUN.Originally posted by filterchanger
why guess,
Designer Dan __ It's Not Rocket Science, But It is SCIENCE with Some Art. _ _ KEEP IT SIMPLE & SINCERE ___ __ www.mysimplifiedhvac.com ___ __ Define the Building Envelope & Perform a Detailed Load Calc: It's ALL About Windows & Make-up Air Requirements. Know Your Equipment Capabilities
Sponsor & Professional Member*
What's a earth contact home? Like a berm or earthhome? TB
Professional Member
I think they just start framing on the ground...no slab foundation,no crawlspace.
Regular Guest
Another way to size condenser is look at evap. coil and determine its size, label sometimes on outside but usually on inside. Copper tubing size indicates 1-1/2 to 2 ton, if length is less that 35-40 ft. If no label on evap coil and your still not sure do a heat loadcalc.
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