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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.


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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
  • Our Services
  • 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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Jo Green
We were very impressed with speed of the initial response to our request for the estimate and the actual installation. Everyone was professional and courteous . They each had their role in the installation and performed as a unit, so the job seemed effortless and was completed efficiently. We are very happy with our decision to go with Cornett for this project and will recommend their services to anyone.
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William Guy
Pre-service call communication was great, I appreciated the texted updates leading up to my appointment. Michael was in front of my house 5 minutes BEFORE the scheduled time. He listened carefully to my description of the issues that we were seeing with our system, explained exactly how he would approach the problem, and executed his plan exactly as described. After he had performed his diagnostics, he clearly explained the problems and how he planned to repair the system. I've not had great luc... Read more
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Robynn Spilker
Zack was extremely knowledgeable with great customer service skills. He followed up quickly with the promised estimate. You’re lucky to have him!
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Paul Hartgen
We have an annual maintenance contract. Zach arrived on time and quickly went to work on our summer preventative maintenance for two HVACs. He was very clear on what he recommended and why. Highly recommend.
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Bernie Snoops
Installation of 2 HVAC units in one day was seamless. Very professional team. Zach returned to install attic fan, very professional and informative.