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Claim This BusinessMcMullen Service Inc has kept central Texas comfortable since the early 1970s, establishing a multigenerational legacy that began with the current owners father and has now extended to grandchildren on the crew. Based in Waco, this family-owned air conditioning contractor holds a spotless perfect 5-star rating across 22 verified client reviews. The company serves Waco and surrounding communities including Bellmead, Hewitt, and Woodway, providing installation, maintenance, and emergency repairs for residential heating and cooling systems.
Unlike corporate HVAC chains that prioritize volume over craftsmanship, McMullen Service Inc operates as a relationship-driven family business where technicians remember your systems history and treat your home as if it were their own. Client reviews consistently highlight fair pricing, honest diagnostics, and work quality that justifies calling them first rather than shopping estimates. The crew handles complex compressor repairs, smart thermostat installations, and seasonal readiness checks with equal care.
Nathan arrived at one reviewers home within hours of a cooling failure during brutal Texas heat, diagnosed the issue accurately, ordered the part, and completed repairs ahead of the promised timeline. Kevin supervised a full HVAC system installation where his crew removed a decades-old compressor cage so cleanly that the homeowner cannot identify where the modification existed. Heather received explicit shoutouts for fast turnaround on winter readiness work, with one client praising the teams punctual arrival and willingness to explain system operation.
Eight of eight client reviews award 5 stars, with four mentioning same-day or next-day emergency response during extreme heat. Technicians named Nathan, Kevin, and Heather each receive direct praise for professionalism or craftsmanship, accounting for six of eight detailed mentions.
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| ThursdayToday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Complete replacement of aging or failed heating and cooling systems, including compressor work and post-installation testing.
Diagnose cooling failures, repair compressor issues, and perform seasonal tune-ups to maintain efficiency.
Prepare heating systems for cold months and repair heating failures, referenced in multiple reviews.
Install and configure connected thermostats including smart models for remote system control.
Rapid response for cooling or heating failures, with several reviewers describing same-day arrivals.
Service for cooking appliances, with one review confirming Nathan handled a stove repair.