Matching condenser with existing coil
Matching condenser with existing coil
(OP)
A friend's residential A/C unit (compressor) went bad. He had a 4 ton system and his brother offered him a 5 ton 13 SEER condenser (free) to replace the bad one using the existing coil (matched for the 4 ton unit). I advised him to replace the coil as well, but his brother didn't have one and stated this would work just as well.
Can he use the 5 ton condenser with a coil rated for 4 tons?
Thanks for any info..
Can he use the 5 ton condenser with a coil rated for 4 tons?
Thanks for any info..





RE: Matching condenser with existing coil
Have your friend call a Trane or Carrier rep or whoever's equipment it is, I'm sure they will not recommend doing this and you'll probably even void any warranties that came with the condensing unit.
RE: Matching condenser with existing coil
He is now ordering the 5 ton coil to be on the safe side...
RE: Matching condenser with existing coil
I know from other postings that your day job is in the power industry or similar. The 4 ton coil with a 5 ton compresser is equivalent to your trying to run a condenser from a 400 MW unit under a 500 MW unit. It would work, but it just wouldn't have a very good back pressure.
The smaller coil would result in a higher condensing pressure and the cycle would be affected accrodingly.
rmw
RE: Matching condenser with existing coil
In order to keep a efficient system, I'd recommend a better match on the low side and high side units. The 13 SEER rating is out the window unless matched properly to an evaporator.
Ken
Ken
KE5DFR