Heat pumps are an excellent fit for Nashville's climate — mild-to-moderate winters with occasional hard freezes, and a long shoulder season where heat pump efficiency dramatically outperforms gas heating on NES rates. Licensed heat pump contractors in Nashville service air-source systems, diagnosing reversing valve failures, refrigerant leaks, defrost cycle problems, and compressor faults. Ensure any Nashville heat pump system includes properly sized backup heat strips for the occasional sub-20°F nights. Annual maintenance is critical given Nashville's year-round system usage. Installation runs $5,500–$13,000. Tennessee D-37-licensed contractors below serve Nashville and the metro including Brentwood, Franklin, Murfreesboro, and Hendersonville.