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Going from 4 ton to 2 ton, will oversized ducts be a problem?
Good afternoon all!
I spent most of last fall getting my steam heat straightened out, but now that we are (hopefully) coming into spring it is time for me to straighten out my AC.
My house is an old, built in 1870. 3 floors, about 5000 sq ft. My existing AC is a very old, 4 ton unit, installed in my crawl space and only cooling the ground floor. 2nd and 3rd floors have no AC installed. My plans for the 2nd floor will be retrofitting with a Unico high velocity system of appropriate size, 3rd floor we are still waffling on (it has 3 rooms but has not been used as living space for years).
I would like to replace the 1st floor AC with a conventional 2 ton system (1st floor requires 22,773 BTUH). My question is, will I have problems with installing a 2 ton system into ductwork previously designed for the 4 ton system?
Just want to stay warm in the winter.