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, 410-801-7771

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.


Check out some important pages from our company's website:


Read what 300+ clients have said about our services:

Our Work

351 Hickory Nut Court , Pasadena, MD, US
  • Our Services
  • Our Services: Repairs
103 Sanderling Court , Glen Burnie, MD, US

As a top HVAC company in Glen Burnie MD, Cornett Heating & Cooling provided our customers their annual maintenance program and found that they needed a new thermostat. With Cornett HVAC, you will get a company that will not upsell you, that will communicate with you every step of the way through transparency and will be able to handle any need your home has. Give us a call today 🔥, 410-801-7771.


Here are three reasons to get yourself on an annual maintenance plan:

  • Efficiency and Performance: Regular maintenance ensures that your HVAC system operates at peak efficiency, maximizing its performance and lifespan. An annual checkup helps identify and address minor issues before they escalate into major, costly problems, keeping the system running smoothly.
  • Energy Savings: Properly maintained HVAC systems consume less energy, leading to reduced utility bills. Routine inspections clean or replace filters, tune-up components, and optimize settings, enhancing overall energy efficiency and minimizing unnecessary expenses.
  • Health and Safety: Annual checkups ensure the system operates safely. Detecting and fixing potential gas leaks, carbon monoxide issues, or electrical problems can prevent health hazards and maintain a safe indoor environment for you and your family.
  • Our Services
  • Our Services: Repairs
  • Our Services: Annual Maintenance Program
572 Ritchie Highway , Severna Park, MD, US
  • Our Services
  • Our Services: Annual Maintenance Program
  • Our Services: Repairs
162 Mabel Lane , Severna Park, MD, US
  • Our Services
  • Our Services: Annual Maintenance Program
  • Our Services: Repairs
784 Springbloom Drive , Millersville, MD, US

Cornett Heating and Cooling is synonymous with: Trust worthy; reliable; loyal and; reputable. As the best HVAC company in Millersville Maryland and surround area, we installed this 4 ton Bosch gas furnace combo for our customers. The 4-ton Bosch gas furnace combo is a high-efficiency HVAC system that integrates a 4-ton gas furnace with a compatible Bosch air conditioning unit, providing powerful climate control for larger residential spaces. Check out our portfolio of past work, where you can read over 320, 5-star Google Reviews, see photos of our work and even filter our portfolio to see how many repairs we've done vs how many full installs we've done. Just know, that our customers trust us and so should you. Consider Cornett HVAC today for any of your heating and cooling needs. So if you live in Annapolis, Arnold, Pasadena, Severna Park, Harwook, Edgewater, Mayo, Lintihicum Heights or anywhere else in AA County, drop us a line. We will not dissapoint.

  • Our Services
  • Our Services: Full Installs
  • Our Services: Repairs

Customer Testimonials

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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
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Vicki Z
Very attentive service and very pleasant and helpful technicians. Much appreciated!
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Christopher Taneyhill
Great service.
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m walters
I'm so grateful to everyone at Cornett Heating & Cooling and big shout out to Julie, Zach, Will, Ryan and Rick! Everyone is so great to work with and they're such as awesome team together! I had a humidity issue in my house which was caused by a previous HVAC installer and Cornett Heating and Cooling was able to do all the diagnostics on my BOSCH to ensure that it was running properly. I'm so impressed with their excellent customer service and attention to detail! Will and his team was able t... Read more