A/C Tons Too Much?
Hi We are in midst of gut renovation and plan on installing ducted 2 zone central a/c. Our HVAC installer and g/c think we need two 5 ton a/c units, based on "rule of thumb" estimates. Our experienced friend says we need no where near that much. Our place is a brick 4 story townhouse, plus a cellar that we don't really need to heat or cool, with buildings up against each side wall. 16ft wide, 40 some feet long. Approximately 700 sq ft interior space per floor. Any thoughts on this? Also, anyone know a firm in NYC that would do Manual J calculations? Thanks very much!