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Cornett Heating & Cooling

We service the Serverna Park, Annapolis, Arnold, Pasadena, Glen Burnie, Millersville and surrounding areas.  Reach out to us if you’d like a consultation, 410-801-7771

About Cornett Heating & Cooling


Cornett Heating & Cooling, located in Severna Park, Maryland, is your premier destination for top-quality HVAC (Heating, Ventilation, and Air Conditioning) services. Our team of highly trained and certified technicians is dedicated to providing exceptional HVAC solutions for both residential and commercial customers. When it comes to HVAC installation, maintenance, and repairs, we have the expertise to keep your indoor environment comfortable year-round. At Cornett Heating & Cooling, we prioritize energy efficiency and sustainability, offering eco-friendly HVAC options to help you reduce your energy bills and environmental impact.


As your trusted HVAC company in Severna Park, we take pride in our commitment to customer satisfaction and our deep roots in the local community. Our website, https://www.cornetthvac.com/, showcases our professionalism and the range of services we offer. Whether you need a new HVAC system installed, routine maintenance, or emergency repairs, you can rely on Cornett Heating & Cooling to deliver reliable, cost-effective solutions. Contact us today for all your heating and cooling needs, and experience the difference our expertise makes in keeping your home or business comfortable and energy-efficient.


Check out some important pages from our company's website:


Read what 300+ clients have said about our services:

Our Work

2529 Running Wolf Trail , Odenton, MD, US
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  • Our Services: Repairs
40 Hearthstone Court , Annapolis, MD, US
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  • Our Services: Annual Maintenance Program
18 Saint Ives Drive , Severna Park, MD, US
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  • Our Services: Repairs
302 Smith Avenue , Severna Park, MD, US
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  • Our Services: Annual Maintenance Program
238 Waycross Way , Arnold, MD, US

See the power of Bosch systems! This 5-ton unit was expertly installed by Cornett Heating & Cooling for a client in Arnold, Maryland – all in a single day. Discover the quality and efficiency we bring to your area by viewing our interactive portfolio.

  • Our Services
  • Our Services: Full Installs

Customer Testimonials

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Kristin Horton
Josh really helped us out in a pinch. After lightening struck our house and fried our AC, he came out quickly and diagnosed the problem. We were lucky they had a cancellation and they installed our new system 4 days later. We appreciated his honestly and felt like his prices were fair. His team came on time, were clean, respectful and got the job done. I would definitely recommend him to any friends or neighbors.
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Molly Hasson
We will be using Cornett to replace HVAC system, but today’s visit was to diagnose our issue and give us our options moving forward. We have used them in the past and have always been happy with the results. They are very responsive and aim to please.
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Kim Monaco (Broadneck Boys)
We had an awesome experience with Robbie Griffin. His professionalism, follow-up and diligence to "fix" our issue was quite impressive. We can't say enough positive things about him! Hopefully you will be lucky enough to have him show up on a service call to your home!
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Jan Z
Cornett Heating and Cooling is always responsive and professional. Highly recommended!!! Highly recommend !!!
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Valerie Ballard
The gentlemen that showed up for work today were very pleasant. Explained the AC to me and I will follow up with all they have recommended to me.