I have a tri-level home 30 yrs old with all new thermopane windows. Base board hot water heating. Am getting bids to install an AC system. One bid is from Unico with their Air Handler and and an American Standard 12 SEER compressor. The other bids are low velocity with 12 Seer Carrier or Bryant Compressors.
Are all the new 12 Seer compressors whether from AS, Carrier or Bryant using refrigerants other than Freon?
Price wise the three bids are essentially within $200 of each other. Your comments as to choice would be deeply appreciated. GRPA By the way I live in Pittsburgh.