Reliable Heating & Cooling Inc.

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About Reliable Heating & Cooling Inc.
Reliable Heating & Cooling Inc. operates from 2183 West Terra Lane in O'Fallon, Missouri, serving the city and its neighboring communities in St. Charles County. The contractor holds a 4.8-star average rating gathered across 116 customer reviews, reflecting consistent service quality over the years. Reviewers describe experiences spanning decades with the company, noting both routine maintenance visits and major equipment replacements. The business maintains around-the-clock availability, meaning a homeowner facing a failed air conditioner on a holiday evening can contact them regardless of the hour.
This contractor distinguishes itself through several specific offerings visible on their website. They are an authorized Carrier dealer, which provides access to the Infinity series system, a feature that appeared in promotional materials offering a free UV light or air cleaner with purchase. Their Diamond Plan Maintenance suggests a structured ongoing maintenance option for customers seeking to extend equipment lifespan. The Going Green section points toward environmentally conscious service options. Beyond equipment, practical enticements include financing arrangements and printed discount offers ranging from $25 to $300 off various installations, these coupons require presentation and cannot be combined with other promotions.
Customer accounts reference specific technicians handling distinct scenarios. A reviewer described Brad arriving within a narrow timeframe for a generator gas line install, using a quiet knock to avoid waking sleeping household members. Derrick performed a furnace inspection and took time explaining maintenance practices that could extend the unit's operational life, an educational approach one reviewer specifically valued. Long-term customers referencing decade-long relationships described consistent experiences with the service team, with one noting management ensuring professionalism throughout each visit.
What Customers Say
Five of six sampled reviewers mention extended tenures with the company, ranging from 12 to over 30 years. Three reviews explicitly reference emergency availability or same-day response. Four reviews name specific team members: Marty, Derrick, Brad, and Liana. All sampled reviews carry five-star ratings, with negative sentiments absent from the displayed sample.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| SaturdayToday | Open 24 hours |
Services
Air Conditioning Service, Repair & Installation
Complete AC diagnostics, repairs, and new equipment installation for residential systems.
Heating & Furnace Service, Repair & Installation
Full heating system support including repairs, replacements, and new furnace installations.
Heat Pump Systems
Installation and service for heat pump equipment providing both heating and cooling functions.
Ductless HVAC Systems
Ductless mini-split installations for homes without traditional ductwork infrastructure.
Indoor Air Quality Solutions
Products addressing IAQ concerns including air scrubbers, UV lights, and humidifiers.
Water Heater Installation
Installation services for water heating equipment with $50 discount offers available.
Light Commercial HVAC
Climate control services for small commercial properties beyond residential applications.
Diamond Plan Maintenance
Ongoing preventative maintenance agreement for customers seeking scheduled service reliability.