Cornett Heating & Cooling of Maryland

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About Us

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:

Recent Work

506 Devonshire Lane ,Severna Park, MD, US

Cornett Heating & Cooling proudly installed a top-of-the-line 3 Ton Goodman gas furnace in a residence located in Severna Park, Maryland, ensuring optimal comfort and efficiency for our valued customers. Our expert team meticulously handled every aspect of the installation, from precise sizing to seamless integration, guaranteeing unparalleled performance and reliability. Trust Cornett Heating & Cooling for all your HVAC needs in Severna Park and beyond, where quality craftsmanship meets exceptional service.



506 Devonshire Lane , Severna Park, MD, US
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  • Our Services
  • Our Services: Repairs
  • Our Services: Full Installs

16 Sunset Drive ,Severna Park, MD, US

Curious about the difference a professional upgrade can make? Check out this before-and-after from a recent project in Severna Park, Maryland. Cornett Heating & Cooling installed this efficient Goodman 3 Ton A2L Straight AC in just one day. Ready to see more of our local expertise? Explore our interactive portfolio!

16 Sunset Drive , Severna Park, MD, US
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  • Our Services
  • Our Services: Repairs
  • Our Services: Full Installs

Customer Reviews

Stephanie Hall — review for Cornett Heating & Cooling
Stephanie Hall - 1056 Pinecrest Drive , Annapolis, MD, US
I had 3 ductless heating and cooling units installed by Cornett in my upstairs and have had a great experience with the company. Josh is exactly what you want in a business owner. Very knowledgeable, honest, professional, friendly, respectful, and really cares about the quality of his work and the happiness of his customer. Every one of the guys working for him is exactly the same. They are professional and friendly and really take pride in the work they do and in doing it well. I cannot recomme... Read more
Cornett Heating & Cooling response
Response from Cornett Heating & Cooling2 years ago

Thank you for taking the time to leave us an amazing review! We are so glad you had a positive experience and thank you for choosing us!

Kathleen Creighton — review for Cornett Heating & Cooling
Kathleen Creighton
Great experience. Danny explained all the options so we could make a good decision. Installation was easy. Techs were extremely polite and they cleaned up after themselves. Highly recommend Cornett!
Cornett Heating & Cooling response
Response from Cornett Heating & Coolinga year ago

Thank you for taking the time to leave us amazing feedback! We are so glad you are happy with our service and appreciate your support!

Chris Coccaro — review for Cornett Heating & Cooling
Chris Coccaro - 609 Samantha Court , Annapolis, MD, US
Danny was great with answering questions and making repairs. The entire team is always extremely professional and responsive. Highly recommend them!
José-Luis Novo — review for Cornett Heating & Cooling
José-Luis Novo
Appointment on 2/3/23. Very quick response at the start of a weekend. Nice technician and assistant. They cleared some stuff in a vent pipe, but in the end it did not solve the problem they were contacted for, so I had to contact them again on 2/7/23, at which point a different technician and assistant quoted an almost $300 fee for an extremely simple repair they could not guarantee it would solve the problem. That was in addition to the $200+ I paid on the first appointment, so I decided to dec... Read more
Cornett Heating & Cooling response
Response from Cornett Heating & Cooling4 years ago

Thank you for the feedback. We always strive to fix our customers issues on the initial call, but in many cases it is not that cut and dry. These systems are complex, and many parts are codependent on other parts. Sometimes we have to go through a trial and error process to get to the root of the problem. To be fair we did not charge you for a 2nd follow up visit, and never got a response regarding the $285 repair estimate. We do still have your part, and stand behind our work. You can contact us at the office if you would like to resolve the issue.

Dennis Strzegowski — review for Cornett Heating & Cooling
Dennis Strzegowski
Danny was on time, friendly and got the job done the first time. Thanks Cornett!