O'Mahony Air Conditioning & Heating, Inc.
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About O'Mahony Air Conditioning & Heating, Inc.
O'Mahony Air Conditioning & Heating, Inc. maintains a perfect 5.0-star rating across 17 client reviews in Glendora, California. The family-operated company provides air conditioning installation, repair, and maintenance services throughout the eastern San Gabriel Valley. Technicians respond to service calls Monday through Friday from 7 AM to 5 PM, with same-day availability for urgent cooling failures.
Customers consistently praise the company's responsiveness and fair pricing. Reviewers note technicians complete full system replacements in a single day, arriving prepared and leaving workspaces clean. The team has serviced historic homes dating to 1933, demonstrating ability to maintain older infrastructure while installing modern high-efficiency systems.
Multiple reviewers describe technicians arriving same-day during heat emergencies. One customer noted technicians Graham and Nathan installed a replacement unit quickly and cleanly after a system failure. Another highlighted technician Mike as knowledgeable, pleasant, and thorough, noting he does neat work without leaving a mess. Reviewers frequently mention receiving honest explanations of repair options and appreciating transparent communication about what each service entails.
What Customers Say
All 17 reviews award 5 stars, with customers specifically praising same-day service responsiveness, single-day unit replacements, honest pricing, and clean work without mess.
Working Hours
| SundayToday | Closed |
| Monday | 7 AM–5 PM |
| Tuesday | 7 AM–5 PM |
| Wednesday | 7 AM–5 PM |
| Thursday | 7 AM–5 PM |
| Friday | 7 AM–5 PM |
| Saturday | Closed |
Services
AC Installation
Full air conditioning system installation including new unit placement and setup, with same-day complete replacement services available.
AC Repair
Diagnostic and repair services for cooling system failures, with same-day response for urgent calls during heat emergencies.
AC Maintenance
Seasonal tune-ups and system check-ups performed before summer and winter months to maintain efficiency.
Heating Repair
Heating system repair services for homes requiring year-round climate control, including older legacy systems.
System Replacement
Old unit removal and new system installation, with reviewers noting complete replacements finished within one day.