The Q4SD-13 SEER is a self-contained, single package heat pump that can be installed on a roof or slab. The ECM variable-speed motor offers heat pump efficiencies and filtration capabilities, says the company. According to the manufacturer, the unit is easy to handle and transport and provides quick access to the refrigerant system without disrupting operation. Features include a galvanized steel cabinet, plastic-coated coil guard and a mesh hail guard, convertible air delivery (horizontal or downflow), and an electric heat strip that provides up to 20 kW of heat output, says the company.

Frigidaire HVAC, 800-422-4328;

eProduct #277