Hi All,
I currently have a Ruud A/C system which was installed in the early 80s. I get that the system is old and probably needs to be replaced.
A little background on the unit, it is a 3 ton with a 1200CFM air handler. I brought in at least 2 companies to clean the unit as it seemed recently to be getting worse at cooling. Finally my cousin mentioned to pull the air filter out and check the evaporator fins. Well to my surprise about 30% of the fins were clogged up with dirt. I remember years ago there was a metal mesh filter which broke (I have been replacing the filter on a monthly basis since that time). I'm guessing from that point on it when we started having the issues. I've done what I could with fin combs, picking it out with a paper clip and using coil cleaner...I just don't know how much is still in there.
Getting back to my question on the air handler, it is a 1200 CFM unit. I have 3 6" duct on the 3rd floor, 3 6" ducts on the second floor and one 7" duct on the first floor. Adding up the most optimal flow I am looking at 750 CFM. I've explained this to every person that has visited and it doesn't seem to ring anything. Some suggested I increase 2 of the 6" ducts on the third floor and others mention to add a 6" on the second floor. The temp coming out of the vents is around 67-68 degrees. Should I first focus on getting the optimal amount of CFMs from the air handler such as expanding 4 of the 6" ducts?
I am all for buying a new unit but I have a feeling I'll shell out 8k on the system and still have the issue.
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