Specification History

Select residential equipment in accordance with the current version of ANSI/ACCA Manual S (Residential Equipment Selection) or equivalent

Select commercial equipment in accordance with the current version of ANSI/ACCA Manual CS (Commercial Applications, Systems and Equipment) or equivalent

Select heating equipment of the lowest capacity required to meet the design heating load and provide sufficient volume for components of existing distribution system that will not be replaced

Select system that is ENERGY STAR certified or equivalent

Select efficient equipment capable of meeting the design load