Mark’s Heating & Air Conditioning

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About Mark’s Heating & Air Conditioning
Mark Dickerson launched Mark's Heating and Air Conditioning in 2012 after observing substandard practices among competing heating and cooling companies in the Upper Cumberland region. Based in Sparta, Tennessee, the company maintains a 4.0-star rating compiled from 74 customer reviews, serving residential, commercial, and new construction clients throughout Sparta and the surrounding White County communities. The contractor operates around the clock every day of the week, ensuring residents of this rural hill country area never face prolonged discomfort during the humid summer months typical of middle Tennessee.
What distinguishes this contractor from many regional competitors is a commitment to transparency and customer education. The company offers free second opinions on proposed repairs, allowing homeowners to verify recommendations before committing to expensive work. Financing options broaden accessibility for households facing unexpected system failures, while a structured maintenance plan helps extend equipment lifespan. Technicians take time explaining diagnoses and walking clients through repair processes, a practice several reviewers explicitly acknowledge as informative.
Recent reviews illustrate the company's responsiveness during peak-demand situations. When a Sparta homeowner's air conditioning ceased functioning on a late afternoon, technician Matt arrived within approximately one hour and replaced a failed capacitor after inspecting the complete system. Another review describes a two-year struggle with inadequate airflow that previous contractors failed to resolve; the Mark's team identified and corrected the underlying issue. Technician TJ made multiple service calls to ensure proper operation, at no additional charge. These accounts reflect a service philosophy prioritizing problem resolution over procedural shortcuts.
What Customers Say
Four of six detailed reviews describe same-day or rapid-response service, with technicians arriving within an hour of the initial call. Positive reviews consistently praise technician communication and willingness to explain repair processes. One negative review addresses warranty dispute procedures, citing communication frustrations with office staff.
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 Services
Complete AC solutions covering repair, installation, replacement, maintenance, and seasonal tune-ups for residential and commercial systems.
Heating System Services
Full-spectrum heating repair, installation, maintenance, and replacement for furnaces and heating equipment in existing structures and new construction.
Heat Pump Solutions
Specialized heat pump repair, installation, and replacement services, including modern variable-speed heat pump systems.
Indoor Air Quality Enhancements
IAQ improvements including UV light treatments targeting airborne contaminants and pathogen control.
Ductless Mini-Split Systems
Installation and configuring of ductless mini-split systems for zoning solutions and supplemental cooling.
Ductwork and Gas Line Services
Custom ductwork fabrication and gas line installation for system extensions and new equipment connections.
Water Heater Services
Water heater installation and replacement services, addressing complementary domestic hot water needs.