Certify HVAC is a Phoenix-based air conditioning and heating company run by Ulises and his son — a family-owned operation where the owners do the work themselves. With a 4.9-star rating across 38 reviews and operating hours from 7 AM to 8 PM weekdays and 7 AM to 5 PM Saturdays, the company has built a reputation on honest, capable service delivered without the overhead of a large dispatch operation.

The family ownership dynamic matters in the reviews. Sara Sansone described Certify as "a gem of an air conditioning company owned by a local Phoenix family" — Ulises and his son doing the work themselves, "kind, smart, and HONEST." Sean Jun has used Certify for two separate projects across two homes, and attributes the repeat relationship to the same qualities. The word honest comes up across multiple reviews in different contexts: Ulises arriving with the part needed on his van, diagnosing quickly, replacing what was actually broken rather than recommending an unnecessary system replacement.

The mini-split work stands out specifically. Tom Pugh described getting quotes from multiple companies for a garage mini-split that included adding electrical panels and additional breakers — then finding Certify, which handled the installation correctly without the unnecessary upcharges. Amber Rutan described a drip system clog that other companies had let become a bigger problem for neighbors — Certify addressed it properly. Kristina Wagner cited professionalism, knowledge, and confidence in the ability to do exactly what was promised.

Services include AC maintenance, repair, heating repair, heating and cooling installation, and financing through Wells Fargo for larger purchases. The company is reachable at (480) 501-1310. For Phoenix homeowners who want a contractor where the owners are the technicians — and whose track record reflects exactly that kind of personal accountability — Certify HVAC is a well-reviewed option.