Point Loma HVAC contractor Tech Air Heating and Air Conditioning, CSLB #995003, handles residential and commercial installation, repair, and preventative maintenance from its West Point Loma Boulevard office. The company runs preventative-maintenance rotations on more than 750 commercial package units across San Diego County, sourcing replacement compressors and contactors through the HVAC wholesale stock at Johnstone Supply on Hancock Street. Residential services include zoning-system installs, ductless mini-split retrofits, furnace ignition repair, and thermostat upgrades across both single-family and multi-unit properties. Each technician diagnoses through static-pressure testing and temperature-differential measurement rather than defaulting to component swaps, reducing unnecessary parts charges on service calls. Condensate-drain routing on high-efficiency furnaces and mini-split cassettes overlaps with the supply and drain work that Leafdale Plumbing handles on shared retrofit projects in the neighborhood. The most complex scope is a multi-zone commercial HVAC installation threading new ductwork through a multi-tenant building and integrating independent thermostats for each suite.