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Stop Suffering! Expert HVAC Services for Your Diana Home

Your satisfaction is our priority, from start to finish.

highly rated by customer reviews!

Your Trusted HVAC Partner in Diana

Summit Air Conditioning & Heating has been proudly serving Diana with reliable HVAC services since 1998. Our family-owned company treats every home like our own, delivering 5-star service guaranteed within 48 hours. Diana residents count on us for AC services, heating solutions, and indoor air quality improvements that keep families comfortable year-round.

Beat the Texas Heat With Expert AC Services

East Texas summers can be brutal, and a failing air conditioner turns your Diana home into an oven. When temperatures climb into the 90s and beyond, you need cooling solutions that work. Summit Air Conditioning & Heating delivers AC services including repair, installation, maintenance, and mini splits to keep your family cool and comfortable all summer long.

Stay Warm During Chilly East Texas Winters

Cold snaps hit Diana harder than you might expect, and a broken furnace means shivering through freezing nights. Don’t let your family suffer through another cold spell without reliable heat. Our furnace services cover installation, repair, tune-ups, and ongoing maintenance to ensure your heating system runs smoothly when you need it most.

Breathe Easier With Indoor Air Quality Solutions

Dust, pollen, and humidity make Diana homes feel stuffy and trigger allergies year-round. Poor indoor air quality affects your family’s health and comfort every single day. We offer IAQ services, including duct replacement, duct repair, and smart thermostats that help you breathe cleaner air and control your home’s comfort with ease.

Heat Pumps That Handle Both Seasons

Why run two separate systems when one heat pump can do it all? Heat pumps provide both heating and cooling, making them perfect for Diana’s changing seasons. Our heat pump services include installation, repair, and maintenance to keep your system running efficiently no matter what the weather brings.

Commercial HVAC Solutions for Diana Businesses

Your business can’t afford downtime from HVAC failures. Customers and employees need comfortable temperatures to stay productive. Summit Air Conditioning & Heating provides commercial HVAC services for heating and cooling that keep your Diana business running smoothly and your utility costs under control.

New Construction HVAC Systems Done Right

Building a new home or business in Diana? Your HVAC system needs to be sized and installed correctly from day one. Poor installation leads to high energy bills and constant repairs down the road. We handle new construction HVAC projects with precision, ensuring your system delivers reliable comfort for years to come.

Why Diana Homeowners Choose Summit Air

We’re not just another HVAC company passing through town. Summit Air Conditioning & Heating is a family-owned business committed to treating your home with the same care we give our own.

In business since 1998

48-hour service guarantee

Fully licensed and insured

Trane Top 10 Dealer Award

5-star family service

Energy efficiency experts

Real Diana Families Love Our Service

Curious what your neighbors think about our work? Diana homeowners share their experiences on Google Reviews, Facebook, and other platforms where real customers tell real stories. We’re proud of the relationships we’ve built in this community, and we invite you to see why families trust us with their home comfort needs.

Solving Diana's Unique Climate Challenges

East Texas weather swings from scorching summers to surprisingly cold winters, putting serious stress on your HVAC system. High humidity levels make your home feel muggy even when the AC runs constantly. Summit Air Conditioning & Heating understands Diana’s climate challenges and provides solutions that keep your home comfortable while reducing energy waste and preventing costly breakdowns.

Explore Diana While We Work on Your System

Schedule your HVAC service and discover what makes Diana special while our technicians handle the job. Visit these local favorites:

Diana ISD schools and athletic facilities
Lake Cherokee recreation areas
Local dining spots along Highway 154
Nearby nature trails and outdoor spaces

Your home will be comfortable and ready when you return from exploring the area.

Serving Diana and Surrounding Gregg County Communities

We’re proud to serve families and businesses throughout the greater Diana area. Our technicians know East Texas and understand the unique needs of homes in this region.

How Diana's Weather Affects Your HVAC System

Diana’s humid subtropical climate means your HVAC system works overtime all year. Summer temperatures regularly exceed 90°F with high humidity which makes your AC strain to keep up. Winter brings cold fronts that can drop temperatures into the 20s overnight. These extreme swings cause wear and tear that leads to breakdowns. Regular maintenance from Summit Air Conditioning & Heating helps your system handle Diana’s demanding weather while keeping energy bills manageable.

Protecting Your Investment With Maintenance Plans

Skipping routine maintenance might save money today, but it costs you much more tomorrow. Dirty filters reduce efficiency, worn parts break down, and small problems turn into expensive repairs. Summit Air Conditioning & Heating offers Silver and Platinum membership plans that include regular tune-ups, priority service, repair discounts, and peace of mind. Your system runs better, lasts longer, and saves you money on energy bills when you invest in preventive care.

Common Questions From Diana Homeowners

Here are answers to questions we hear most often from Diana residents about HVAC services and home comfort solutions.

How often should I schedule HVAC maintenance in Diana?

Schedule maintenance twice yearly – spring for AC and fall for heating systems. Diana’s climate demands regular tune-ups to prevent breakdowns during extreme weather.

What's the 48-hour service guarantee?

We promise to respond to your service request within 48 hours of your call. Your comfort matters, and we don’t make you wait days for help.

Do you work on both residential and commercial systems?

Yes, Summit Air handles HVAC services for homes and commercial buildings throughout Diana and Gregg County.

Can you help with duct problems?

Absolutely! We provide duct repair and replacement services to fix leaks, improve airflow, and boost your system’s efficiency.

What areas around Diana do you serve?

We serve all of Gregg County including Longview, Kilgore, Hallsville, and surrounding East Texas communities.