3 ton versus 3.5 ton
I'm having bids done on my house to replace a 12yr old HVAC system for my 1200sq foot house.
My original split system was a 3.5 ton installed in 1996. The two bids I've had so far say a 3 ton would be more than enough.
Does this make any sense, and are newer systems that much better than a 12yr old system?