The condenser unit will not kick on...it is a concord unit,10=12 years old,13 seer,3 ton. The air handler works fine. I thought it was the capacitor. The old one was bad,I verified that with multimeter. Ordered a new one (original replacement part). Installed it tonight, turned on AC and nothing. Air handler kicked in, contactor closed on bar on compressor, but neither fan nor compressor turned on. It has sat idle for past 3 seasons.

Probably a weak breaker. I would change it and see if it happens again. If the problem continues call a hvac guy out

i would check fan speed. it's probably on high. you might be moving more air with new system. a dirty evaporater on old unit woud have gave you a larger temperture drop.

it will work just fine. the mfd are your only concern on residential units.

no, you wont be able to get the 13 seer out of the coil. stay will the same seer rating or change both pieces.

Your going to need to know the age of the unit. If its less than 5 years old, its most likely a 13 SEER. If its anything more than 5 years old, its most likely a 10 SEER. If its anything over 10 years old, its most likely an 8 or 6 SEER.

Remember, that a unit will loose an average of 1-2 SEER for every full year of operation. This is just due to age, wear and tear, and usage.



So, if its a 10 SEER unit that is 7 years old, you could say that it is about as efficient as something in the 4-6 SEER range.

On the air handler take the top panel off, look to the left on the inside, this will give you general information on the unit on a stampede plate. This will
give you the date of manufactuer as well.

On the outdoor unit, there is a stamped plate on the
condensing unit. Should have year of manufactuer, it
should also say how many pounds of freon should be
in it. The Model number is what you need to know
to find out how big it is.

024=24,000 BTU= 2ton unit
030=30,000 BTU=2 1/2ton
036=36,000 BTU=3ton
040=40,000BTU= 3 1/2ton
and so on.

My guess is that it is an older unit and since I have
been installling units since 1995 I have only known
any older units to be at least a 10 SEER and no more.

you have a 3.5 ton unit.The evap will work with a new unit but it will not have the 13 seer performance that the new condencer with matching coil will give you.It is getting and harder to find the old 10 seer units check ebay and craigslist.

Check your filter. Make sure it is clean. Make sure the outdoor unit is operational. (power on). Clean your condenser coil with a garden hose. If possible check your evaporator coil. If it is dirty clean it. Your furnace (or air handler) blower speed should be set on high. All of your registers (supply & return) should be open and unobstructed. Check for proper thermostat settings. If none of this information solves your problem , then your units charge needs to be checked. You could be over or undercharged with freon.
Good luck......

do you have a totaline t-stat. they and some other brands have a fan recirculation setting in the installers menu.

this is assuming that this happens in addition to the heating or cooling normally

you have a missmatched system, for it to work try removing the orfice on the high side txv it is not allowing the evaperator coil to fill with refrigerant properly coleman and intertherm dont like each other since they control a large market in the manufactured housing heating and cooling units electricaly connecting the componets together no issue prefromance sometimes is the issue hope this helps