Our Preferred packaged rooftop heat pump, the 549J, is available in 3 to 25 ton capacities that are ASHRAE 90.1 energy compliant and Energy Star® certified. These units offer a full line of factory options or field-installed accessories to go along with energy-saving performance of up to 15.8 SEER and up to 8.2 HSPF heating. Single- and multi-stage cooling and heating models are available with a variety of heating sizes for each unit size.