We live in Connecticut. Our home is just about 10 years old and the AC compressor is dead. We interviewed a few contractors. One of them said that with the current oil furnace (81 AFUE, barely 10 years old, Lennox), we should not install AC that is above 14 SEER. Is this true?
We were then told the best thing is to replace the oil furnace at the same time to a Trane XV80 variable speed furnace, which is 82 AFUE, at the same time. In addition, in stead of AC, get a heat pump (15 SEER) with the new furnace to use the oil heating as a backup when it gets really cold (below 35).
We moved from Maryland to Connecticut last year. It seems to us that the weather is not really hot here. So, it may not really worth it to have a AC/heat pump of higher efficiency.
Please help us. None of us have engineer background.