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View Full Version : Can You use a smaller coil to a bigger condenser



Art McKenna
07-28-2012, 02:40 AM
Do these two work together
Whirlpool M# WEMIP50Cw-1
S# 6209D05207

Nordyn
M#NS4BD-O60KA
S# NSA090400o71

Bruce King
07-28-2012, 05:51 AM
It depends on several factors.
You can get some hvac technical info here:
HVAC-Talk: Heating, Air & Refrigeration Discussion - Powered by vBulletin (http://hvac-talk.com/vbb/)

Zibby Bujno
07-29-2012, 03:25 PM
umm, bad idea. Symptoms, poor performance, compressor failure due to high superheat.

Rod Butler
07-30-2012, 08:47 AM
I concur with the statements above. I'd also add that you could see frosting and freezing of the coil more often as well.

It is generally a bad idea to under-size your coil.

Art McKenna
07-30-2012, 01:44 PM
Do these two work together
Whirlpool M# WEMIP50Cw-1
S# 6209D05207

Nordyn
M#NS4BD-O60KA
S# NSA090400o71

Spec attached
EM1P50 is the same as a WEM1P50
What is it rated for 4 or 5

Art McKenna
08-20-2012, 12:33 PM
What would happen if You put a smaller blower motor. On a 5 ton system say a 1/2 or a 1/4 horse power motor. The system still doesn't work they replaced the coil with a 5 ton coil.

kevinvantassel
09-02-2012, 01:40 PM
Do these two work together
Whirlpool M# WEMIP50Cw-1
S# 6209D05207

Nordyn
M#NS4BD-O60KA
S# NSA090400o71



You can go a little bigger on the coil, but it's a bad idea to go smaller.

Benjamin Thompson
09-03-2012, 07:28 PM
You can go a little bigger on the coil, but it's a bad idea to go smaller.

I've run into this a few times lately and have called for HVAC to check it. Surely there must be some reason that the sizing is supposed to be matched, not larger or smaller. Mismatching must be a problem, otherwise why label the evaporator? The unit doesn't say "OK for 4 ton or smaller compressor".