Meet the expert
Yuan Pan
Owner & Lead HVAC Technician, Alex Air & Heating
Yuan Pan is the owner and lead technician at Alex Air & Heating Services LLC and holds EPA 608 Universal certification. His profile identifies the service expertise and credential used for the site's HVAC guidance.
EPA 608 Universal CertifiedLicensed to safely handle all refrigerant types (Clean Air Act, Section 608).
Owner & lead technicianHands-on, in-home diagnosis and installs — not a call center.
Local to the Inland EmpireServing Ontario, Pomona, Diamond Bar, Walnut, Claremont & East LA County.
Registered California LLCAlex Air & Heating Services LLC — real jobs, honest pricing.
Recent guides by Yuan
Buying GuideMini-Split for a Sunroom: Comfort and Placement Questions8 min readGuidesMini-Split Not Heating After a Mode Change: What to Check Safely8 min readGuidesHeat Pump Defrost Cycle in Southern California: What Homeowners May Notice9 min readGuidesAuxiliary Heat vs Emergency Heat: What the Thermostat Is Telling You10 min readGuidesThermostat Fan Auto vs On in Fall: What Changes Around the House?9 min readHeatingFurnace Makes a Boom at Startup: What Should You Do Next?9 min read
Read all HVAC articles Ready when you are.
Written pricing, EPA 608-certified expertise, and appointment timing confirmed before you book.