Keeping North Texas Comfortable!

We take pride in offering comprehensive heating, cooling, and air quality solutions for both residential and commercial properties.

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Committed to Excellence In All We Do

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Lewisville HVAC Contractor

Superior Indoor Air Quality, Heating & AC Installation, Replacement & Repair in Frisco, Little Elm & Flower Mound

Have a broken heater or AC? Call Northside Air Conditioning for quick and efficient HVAC service in Lewisville, TX. We have immersed ourselves in ever facet of the industry, cultivating a comprehensive understanding that significantly enhances the value we bring to our customers. With collective experience spanning over a century and marking our 20th year in business, Northside Air Conditioning was established to address a distinctive gap in the market.

Some heating and cooling companies employ fear tactics or impulse selling methods to push customers into purchasing services they don’t need—we take a different approach. Our team of trusted Lewisville HVAC technicians is more focused on building and maintaining honest relationships.

When you need Lewisville or Denton HVAC services, give us a call for quick service today!

Check Out Our Maintenance Plan Join our Maintenance Advantage Program & receive comfortable benefits all year long!

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Reviews and Testimonials

See What Our Customers Are Saying

“Customers for Life!”
We have been Northside customers for over 10 years. We would never call anyone else. We constantly refer this company to others. John D. is as good as they come! He is always professional, thorough, punctual, and informs me of what is going on with our systems & what we can expect from them for the upcoming season. Additionally, he recently offered to get warranty information for some of the equipment in our new home. He called me back with the info within a day as he promised. This level of service is amazing! Customers for life!

- Marcey
“Best Service Ever !!”
Our air conditioner failed last night and we called 4 companies to come out, last night if possible. In my message I requested to please return my call to let me know if that was possible, or if I should continue my search. The ONLY company to return my call was Northside, and they not only came out and fixed our unit late at night, but were courteous, professional and called when they were on their way to let us know when they would arrive. Thank you so much, your efforts were much appreciated!

- Terry and Lynda Hall
“Great Company and Great People”
A great company and a great group of people that always provide professional and thorough service. Jonathan, our service technician, did a wonderful job taking care of the annual maintenance on the system. I recommend them to all my friends and family.

- Suzie
“North Side did everything possible”
Furnace failed during the coldest winter ever! North Side did everything possible to get my system back on line, including traveling the bad roads for parts.

- Mike S.
“Will definitely use Northside again.”
The installers Frank and Jose were excellent and very professional.

- Barbara S.
“Honest and FAST”
Thanks to Luis for the great service. He was availalbe earlier than my appointment and he called to let me know when he was arriving. He was prompt and more importantly, honest with my repair recommendation. Would highly recommend Northside.

- Michael
“Awesome!”
Want to say thanks so much for a job well done! I’ve used Northside now for a couple years and Your service is impeccable. Anytime I’ve had emergency issues arise I’ve always had an almost immediate call back. Chris (svc tech) has been taking care of us for a little while now and he’s been nothing short of great. He’s professional, courteous, and knows his trade very well. He demonstrates a very real concern for correctly identifying the problems and addressing them correctly. As long as I live in the Denton county area, Northside will always be my HVAC service provider. I promise you won’t find a better group of folks around. Thanks again guys/gals!

- Kris
“Thank you, Tim!”
Tim was professional and fixed the situation immediately!

- Lucy P.

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Why Are We the Right Team for the Job?

Financing Options Available
Financing Options Available. With Approved Credit. Ask For Details.
5-10 Year Parts & Labor Warranties on New Equipment
Over 20+ Years in Business
100+ Years of Combined Experience
24-Hour Emergency Repairs
Lifetime Warranty on All Installations

Denton HVAC Company Rated A+ by the Better Business Bureau

At Northside Air Conditioning, we take pride in establishing the standard for exceptional HVAC services in Denton. Whether you require heat pump repairs, air conditioning installations, or routine maintenance programs, our team is equipped to meet all your heating and cooling needs. As a distinguished Customer Care Dealer, we offer top-of-the-line equipment to ensure year-long comfort in your home. Looking for financing options? We've got you covered!

Proudly Servicing All Brands of Equipment!

Emergency Services Available

Lewisville and Denton HVAC Services Available All Hours of the Day

Our team of HVAC technicians in Lewisville is available 24 hours a day, 7 days a week for emergency repairs. It’s impossible to diagnose all HVAC issues on the surface, which is why we’ll look deep into the issues of your system when you call us for a free in-person consultation. We maintain consistent high levels of performance and promptly address our customers’ concerns, resulting in 100% satisfaction time and time again!