Ductless air conditioners are also more common and affordable than they were a decade ago. These can be a great option if you’re retrofitting a permanent air conditioning system to a house (or a ...

Manual D, from the Air Conditioning Contractors of America (ACCA), provides a single set of ANSI-recognized ... A single set of ANSI-recognized duct sizing principles and calculations that apply to ...

The manufacturer claims the new products are particularly suitable for older homes, renovations in extreme climates. All ...