Air Conditioning & Heating in Dallas County, TX
For nearly 50 years, Ellis Air Conditioning & Heating has proudly served Dallas County and the greater DFW Metroplex with trusted heating and cooling solutions. Established in 1975, our family-owned HVAC company has built a reputation for quality, reliability, and exceptional customer care.
We understand the unique challenges of North Texas weather—scorching hot summers, sudden cold snaps, and severe spring storms—and we provide comprehensive residential and commercial HVAC services designed to keep you comfortable year-round.
With multiple dispatch locations in Cedar Hill, Irving, Plano, Mansfield, and Midlothian, our technicians respond quickly to service calls across Dallas County and surrounding cities. Whether it’s your home or business, you can trust Ellis AC to deliver the professional HVAC solutions you need.
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About Dallas County
Home to nearly 3 million residents, Dallas County is the second-most populous county in Texas and the ninth in the nation. The city of Dallas serves as the county seat, and the area is a hub for commerce, culture, and transportation with Love Field and DFW International Airport nearby.
Made up of 26 cities and three towns, Dallas County offers a mix of vibrant urban communities and welcoming residential neighborhoods. Ellis Air Conditioning & Heating is proud to serve this diverse county with dependable HVAC services for both homes and businesses.
Residential & Commercial HVAC Services in Dallas County
Ellis AC specializes in both residential and commercial HVAC services, providing solutions tailored to each client’s needs.
Residential HVAC Services
Air conditioning repair, replacement & installation
Heating system repair and furnace services
Preventative HVAC maintenance
Indoor air quality and ductwork solutions
Commercial HVAC Services
Large-scale AC and heating system installation
Commercial system repair and maintenance contracts
Energy-efficient upgrades to reduce operating costs
Emergency service for offices, retail, and industrial spaces
No matter the size of your property, our certified technicians are equipped to handle HVAC projects of all scopes and complexities.

The Weather in Dallas County
North Texas weather is as unpredictable as it is extreme:
Summers – Triple-digit heat is common, with July averaging 95°F.
Winters – While generally mild, January temperatures average just 54°F.
Storm Season – From March through May, Dallas County often experiences tornadoes, hail, and damaging winds.
These conditions place a heavy demand on HVAC systems, often leading to breakdowns, frozen coils, or storm damage. Ellis AC’s experienced team is prepared to keep your system running smoothly no matter the weather.

Common HVAC Issues We See
In Dallas County, many AC problems come from systems working overtime in the summer heat. The most common complaints include:
AC blowing warm air
Units freezing up or shutting down
Thermostats not responding
Systems unable to keep up with demand
Our technicians are trained to quickly diagnose and resolve these issues, restoring comfort as efficiently as possible.
Why Choose Ellis AC?
Ellis Air Conditioning & Heating stands out with nearly five decades of proven service and a team of factory-trained, NATE-certified technicians. Each technician averages more than 15 years of hands-on experience and participates in ongoing training to stay ahead of industry innovations.
What sets us apart:
50 years of trusted service in North Texas
Residential and commercial expertise
Fast response times across Dallas County
Commitment to superior customer service
From your first call to project completion, our goal is to exceed your expectations and earn your trust as your go-to HVAC company.




Call Ellis Air Conditioning & Heating in Dallas County
Don’t wait until a minor HVAC problem becomes a costly repair. For nearly 50 years, Ellis Air Conditioning & Heating has been the trusted choice for heating, cooling, and ventilation services in Dallas County and across the DFW Metroplex.
Call Ellis AC today to schedule service, request a quote, or get emergency HVAC help for your home or business in Dallas County.