Take a look at our past work!

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

306 Holland Road , Severna Park, MD, US

Bosch 96% Gas Furnace 3 Ton A/C 

  • Our Services
  • Our Services: Full Installs
  • Our Services: Annual Maintenance Program
  • Our Services: Repairs
508 Thistledown Court , Millersville, MD, US
  • Our Services
  • Our Services: Annual Maintenance Program
  • Our Services: Repairs
781 Abigail Wynd Court , Severna Park, MD, US
  • Our Services
  • Our Services: Repairs
277 Peninsula Farm Road , Arnold, MD, US

Goodman 5 Ton heat pump 14.3 Seer2. Before and After

  • Our Services
  • Our Services: Repairs
  • Our Services: Full Installs
403 Helmsman Way , Severna Park, MD, US
  • Our Services
  • Our Services: Annual Maintenance Program
  • Our Services: Repairs

Customer Testimonials

Reviewer photo
Mike & Lisa Etheredge
Zach arrived promptly, quickly diagnosed the issue, and made the repair. He also provided a thorough explanation of the issue and resolution. We bought our HVAC system from Cornett a few years ago and continue to be very happy with the professional service they provide. Have referred multiple family members and friends to them as well.
Reviewer photo
Kelly Brown
Danny was prompt and expeditious in servicing our AC unit and getting it back in working order, during one of the hottest days of the summer.
Reviewer photo
mindi wachs
Danny was our tech … he was great… informative, professional, on time and so helpful. Cornett got us on the books quickly in the middle of heatwave. Thank you! Highly recommend!
Reviewer photo
Michelle Clabby
The two gentleman were actually early for the appointment and very polite and professional. We’ll call them if any other issues arise.
Reviewer photo
Alvina Williams
The experience with Cornett Heating & Cooling was very professional and excellent customer service from setting up the request on line and a follow up call from the office, to set up the official appointment for maintenance service for my HVAC System. The Technicians were on time, running ahead of their schedule, and afforded me the coursety with a phone call to see if they could arrive earlier which was excellent for me. Once the Technicians entered my home, they were very professional, consi...Read more