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Claim This BusinessJohn H Coleman Co has served the Knoxville community for decades as a family-owned HVAC contractor, now holding a 4.9-star rating across an impressive 935 customer reviews. The company operates from offices in Knox County and dispatches licensed technicians throughout the metro area, including nearby Farragut and Hardin Valley neighborhoods. Their team handles residential heating and cooling systems, water heater installations, and system diagnostics for homeowners who expect professional craftwork and reliable service.
This contractor differentiates through transparent pricing practices and customer service responsiveness. Jeremiah, a field estimator, recently provided a quote for panel relocation work and actively sought cost-saving opportunities without compromising quality. Their customer care program offers scheduled maintenance plans designed to extend equipment lifespan and reduce emergency repair likelihood. Technicians explain repairs in plain language and show homeowners exactly what they are servicing, a practice multiple reviewers specifically praised.
Named technicians appear frequently in reviewer feedback. Jason responded during cold weather to repair a home heating unit and earned praise for friendliness and technical knowledge. Justin performed a furnace diagnostic and took time to show the homeowner the exact issue while explaining the repair need. One reviewer noted that Jeremiah provided an honest assessment for a large project while looking for ways to save money. However, a critical review from June 2025 noted a technician misdiagnosed a leaking Navien water heater as condensation, illustrating that even experienced contractors can miss specific equipment issues.
4 of 5 displayed reviews award 5 stars, with reviewers specifically naming Jason, Jeremiah, Justin, and Jackie for professional conduct. The single 1-star review concerns a water heater misdiagnosis where condensation was suspected rather than an actual leak. Positive feedback emphasizes transparent pricing, explanations during service, and responsiveness.
| Sunday | Closed |
| Monday | 7 AM–8 PM |
| Tuesday | 7 AM–8 PM |
| Wednesday | 7 AM–8 PM |
| ThursdayToday | 7 AM–8 PM |
| Friday | 7 AM–8 PM |
| Saturday | 7 AM–8 PM |
Diagnostic services and repairs for heating and cooling systems, including furnace and AC troubleshooting.
New heating and cooling unit installation for residential homes replacing existing equipment.
Installation and repair of tank and tankless water heaters including Navien systems.
Scheduled maintenance plans designed to extend equipment life and prevent emergency breakdowns.
Electrical panel assessment and relocation services for larger renovation projects.