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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
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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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Christine Hiles
Friday we woke to find that our heat had gone out overnight with an outdoor temperature below freezing predicted all weekend. On a friend’s recommendation I called Cornett’s Heating and Cooling. I called around 9:30 am Friday and, of course with the bitter cold temperature outside, they had a fully booked schedule. They said they would put us on the schedule for Saturday morning as a worst case scenario and would call me if anything came available any sooner. Fifteen minutes later they said they... Read more
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Christe Spiers
Excellent service. Responded to an emergency need - went from quote to install in 3 days. Great crew. Highly recommend.
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Matthew Morch
The guys were awesome! They were quick, clean, explained what they were doing, and did a great job. Awesome team!
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Betty Harlan
They arrived on time and sent reminders for our appointment. Really nice and professional guys. Did a thorough check of our heating system. Very conscienous and used booties in the house. Answered all of our questions. Would highly recommend this company.
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Kate Horrell
Our furnace recently stopped working. We had three companies come to look at it, and only the Cornett tech accurately isolated the problem. The other two techs missed an important safety switch that had blown, and therefore inaccurately attributed the problem to another source. Ultimately, we decided to replace our system. The Cornett quote was the most reasonably priced and, based on the repair situation, I felt more confident with their work. Our new unit was installed by Chip, Steve and Tyl... Read more