Heating/Cooling an addition
I just bought a 2 story home with the garage converted to a room. It was never heated or cooled. The current home is 2200 square feet with the addition, 2 stories and has a 2 ton unit in it so it would be undersized to heat/cool the additional space. Current system is 20 year old hydro heat and 10 year old AC central Air and has weak air flow. Would it be more cost effective to replace the whole thing and add the additional duct or buy a mini-split system for the addition? Thanks.