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: 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

Eric Alexander — review for Cornett Heating & Cooling
Eric Alexander
Perfect experience from start to finish. This is a locally owned, small business, run by a very honest, competent, straightforward, trustworthy gentlemen that understands what it takes to be a small business competing against the “BigGuys.” I can not say enough great things about my experience during an emergency call with no heat and sub freezing temperatures. Josh is the real deal, and I would readily recommend him to anyone in need of an incredible HVAC company!
Cornett Heating & Cooling response
Response from Cornett Heating & Cooling3 years ago

Many thanks for the kind feedback!

Eoin Elliffe — review for Cornett Heating & Cooling
Eoin Elliffe
Josh - is a solid, knowledgeable and reliable member of the Severna Park community, He’s a big laCrosse and soccer fan. He is very easy to work with - really transparent and honest - was able to troubleshoot our systems very quickly.
ronald kolbe — review for Cornett Heating & Cooling
ronald kolbe
Just all around great service . Only heating and air contractor's I've used .
Joseph Lion — review for Cornett Heating & Cooling
Joseph Lion
Can't say enough good things about Josh, he's the most honest HVAC guy out there. Shows up on time, takes pride in his work and has very fair pricing. Refreshing to find a company that takes pride in their reputation.
Andrew Troy — review for Cornett Heating & Cooling
Andrew Troy - 317 Hollyberry Road , Severna Park, MD, US
We had a furnace breakdown on a Federal holiday when the temperatures had been in the teens. Cornett called me back within 45 minutes and was at my door 10 minutes after that. He quickly identified the problem, had a replacement part in his truck and had the furnace up and running within another 10 minutes. The fee was very reasonable. Even more important, he took time to show and explain the problem to me, what to expect, and ways to avoid other potential furnace problems. A positive experienc... Read more