GNC Heating and Air Conditioning
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GNC Heating and Air Conditioning operates from Rancho Cucamonga, serving residents across the Inland Empire including Ontario and Fontana neighborhoods. The company holds a strong local presence with a 3.2-star average rating drawn from six customer reviews, reflecting a mix of experiences that includes both satisfactory repairs and reports of missed appointments.
Positive reviews highlight specific technicians who deliver reliable service. Gwen Graber praised a technician who arrived on time, cleaned the air grate, installed a new filter, and efficiently repaired her air conditioner. Reece Lemmon noted a service tech who immediately resolved a furnace issue at fair pricing, and Johnnie Carter commended the overall service quality. However, Jason Dunn reported a concerning pattern ofno-shows after agreeing to work, which affected his two-star assessment.
What Customers Say
Three of five detailed reviews award five stars, with customers specifically praising on-time arrivals and going beyond the original repair request. The remaining reviews cite reliability concerns, including a missed job and a vendor debt dispute. Overall, the rating of 3.2 stars reflects two distinctly different service experiences.
Working Hours
| Sunday | Closed |
| Monday | 7:30 AM–6:30 PM |
| Tuesday | 7:30 AM–6:30 PM |
| Wednesday | 7:30 AM–6:30 PM |
| ThursdayToday | 7:30 AM–6:30 PM |
| Friday | 7:30 AM–6:30 PM |
| Saturday | 8 AM–4:30 PM |
Services
AC Repair & Maintenance
Diagnostic services, refrigerant recharging, and tune-ups. Reviewers mention recharge and relocation work for roof-mounted units.
Heating System Repair
Furnace diagnostics and repair. One reviewer reported immediate same-day resolution of a furnace issue.
Indoor Air Quality Add-ons
Filter replacement and air grate cleaning, performed as courtesy add-ons during service calls per reviewer accounts.
AC Unit Repositioning
Relocation or repositioning of roof-mounted air conditioners to address water intrusion issues.