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. He and the team repair and install heating and cooling systems across Ontario, the Inland Empire and East Los Angeles County every day — so this advice comes from real jobs, not generic filler.
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
Air QualityIndoor Air Quality After a Home Remodel: HVAC Questions to Ask8 min readAir QualityCan a Blocked Return Air Vent Make a Room Uncomfortable?7 min readCommercialCommercial HVAC Repair vs Replacement: A Decision Guide8 min readCommercial9 Commercial HVAC Warning Signs That Need Fast Service8 min readBuying GuideHow to Compare AC Replacement Estimates in Pomona8 min readBuying GuideShould You Replace an AC and Furnace Together?8 min read
Read all HVAC articles Ready when you are.
Same-day service, honest pricing, and EPA-certified technicians who get it right the first time.