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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, 410-647-6979

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

1822 Braddock Drive , Crofton, MD, US

Daikin Fit 3 Ton Heat pump, 3 ton Daikin fit Gas Furnace combo. Before and after

  • Our Services
  • Our Services: Full Installs
132 Idlewild Road , Severna Park, MD, US
  • Our Services
  • Our Services: Full Installs
1246 Harbor Glen Court , Arnold, MD, US

Two 4 ton Heat Pumps

  • Our Services
  • Our Services: Full Installs
12 Saint Andrews Crossover , Severna Park, MD, US

Daikin 3.5 Ton Fit Gas furnace

  • Our Services
  • Our Services: Full Installs
156 River Road , Pasadena, MD, US

Bosch 2 Ton Heat Pump. Before and after

  • Our Services
  • Our Services: Full Installs

Customer Testimonials

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Sail Away
We are pleased to consider Cornett our HVAC (Bosch 2 zone) company going forward. We had continual problems with our second zone, installed by another dealer. Cornett's techs quickly diagnosed the multiple issues and resolved them efficiently. And we thought the invoicing was very fair and reasonable.
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Brian Edwards
Was able to get on the schedule next day, tech was quick to diagnose the problem and took the remaining time to inspect the rest of the system and do preventative maintenance.
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Patrick Moreno - 207 Ullman Road , Pasadena, MD, US
Called lasted minute and they came out less than an hour , and got my HVAC back up and running .
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Greg Cantori - 8293 Shilling Road , Pasadena, MD, US
We operate Little Deeds, a home safety aging in place handyman service and we use the same customer service system as Cornett. It's called HouseCall Pro and makes us pros look and respond professionally . As a first time customer of Cornett, I cannot recommend them highly enough! With Julie in the office taking care of us and all our questions and the techs figuring out how to get our Mr. Cool Mini-Split system up and running again with special order parts! We will be recommending Cornett to o...Read more
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Calli Wise - 345 Alameda Parkway , Arnold, MD, US
We've had good experiences with Cornett on every visit, from rewiring a smart thermostat to repairing our outdoor unit on the same day when our AC quit during a heat wave. These have been really friendly folks who are willing to explain their process and are transparent about pricing.