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

202 Homewood Terrace , Baltimore, MD, US

In Baltimore, Maryland, our expert team at Cornett Heating & Cooling recently completed a cutting-edge HVAC installation project, showcasing our commitment to excellence and customer satisfaction. Our installation featured the state-of-the-art Bosch 3 Ton AC, renowned for its impressive 19 SEER rating, ensuring unparalleled cooling performance and energy efficiency even in the most demanding climates.


By choosing Cornett Heating & Cooling for your HVAC needs in Severna Park, Maryland, you're not only investing in superior comfort and reliability but also in the expertise of a trusted local provider dedicated to exceeding your expectations. Trust us to keep your home or business comfortable year-round with our top-of-the-line products and unparalleled service.

  • Our Services
  • Our Services: Repairs
  • Our Services: Annual Maintenance Program
  • Our Services: Full Installs
371 Wilett Drive , Severna Park, MD, US

Cornett Heating & Cooling installed double Bosch, 2-Ton Heat pumps for their customers in Severna Park Maryland. As the best HVAC company in Severna Park, Josh Cornett (owner) and his team of technicians, are here to help. Our company has been around since the early 90's and is proud to be the premier company in Anne Arundel County, Maryland. Our services include: new air conditioning installations; Air conditioning maintenance and repairs; heating maintenance and repairs, gas furnace installations and; boiler installation and repairs. We handle all residential and commercial properties and have over 400, 5-star Google Reviews. Schedule your appointment today!

  • Our Services
  • Our Services: Repairs
  • Our Services: Full Installs
422 Fernwood Drive , Severna Park, MD, US

At Cornett Heating & Cooling, we recently had the pleasure of completing a transformative HVAC installation project for a valued customer residing in the picturesque Severna Park, Maryland area. With our decades of experience dating back to the early 90s, we've honed our expertise to deliver top-notch solutions tailored to our clients' needs. In this particular project, we upgraded the home's heating and cooling system with a Bosch 100k BTU Gas Furnace and an 18 SEER 4 Ton A/C unit. The difference before and after the installation was truly remarkable – from improved energy efficiency to enhanced comfort levels, our client experienced a significant upgrade in their indoor environment.


With over 430 Google reviews from satisfied customers, we take pride in our commitment to excellence and customer satisfaction. At Cornett Heating & Cooling, we understand the importance of providing reliable, high-quality HVAC solutions that stand the test of time. Whether it's a simple repair or a comprehensive installation like the one in Severna Park, Maryland, our dedicated team is here to ensure your home's comfort and efficiency are always at their peak. Trust Cornett Heating & Cooling for all your HVAC needs – because when it comes to quality, experience, and customer service, we've got you covered.

  • Our Services
  • Our Services: Full Installs
434 Williamstowne Court , Millersville, MD, US

At Cornett Heating & Cooling, we take pride in being recognized as a top-tier HVAC company serving the Millersville, Maryland area. With our unwavering dedication to excellence and years of industry experience, we recently had the privilege of completing a transformative HVAC installation project in Millersville. Our skilled technicians installed a cutting-edge Bosch 3 Ton Heat Pump with an impressive 18 SEER rating, delivering unmatched efficiency and comfort for our client's home. The difference before and after the installation was truly remarkable – from enhanced energy savings to improved indoor comfort, our client experienced a noticeable upgrade in their living space. Trust Cornett Heating & Cooling for all your HVAC needs in Millersville, Maryland, because when it comes to superior service and exceptional results, we're the name you can rely on.

  • Our Services
  • Our Services: Annual Maintenance Program
  • Our Services: Full Installs
104 Ritchie Highway , Pasadena, MD, US

When selecting an HVAC company, homeowners should consider asking the following questions:

  1. Experience and Credentials: How long has the company been in business, and what certifications or licenses do they hold?
  2. Services Offered: What types of HVAC services does the company provide? Are they equipped to handle installations, repairs, maintenance, and replacements?
  3. Customer Reviews and References: Can the company provide testimonials or references from satisfied customers? What do online reviews say about their service quality and reliability?
  4. Pricing and Financing Options: What are the company's pricing structures for different services? Do they offer financing options or payment plans?
  5. Response Time and Availability: How quickly can the company respond to emergencies or service calls? Are they available for 24/7 assistance?
  6. Warranty and Guarantees: What warranties or guarantees do they offer on their products and services? Are there any limitations or exclusions homeowners should be aware of?
  7. Energy Efficiency Expertise: Does the company prioritize energy-efficient solutions and offer advice on optimizing HVAC systems for cost savings and environmental sustainability?
  8. Professionalism and Communication: How does the company communicate with customers? Are their technicians punctual, courteous, and knowledgeable?
  9. Safety Measures: What safety protocols does the company follow to protect both their technicians and homeowners' properties during installations or repairs?
  10. Maintenance Plans: Does the company offer preventive maintenance plans to keep HVAC systems running smoothly and prolong their lifespan?

By researching and asking these questions, homeowners can make informed decisions when choosing the right HVAC company to meet their needs.


Cornett Heating & Cooling has all of the above. Don't take our word for it, just look at our over 400+ Google Reviews. We are proud of our local reputation and everything that is numbered above. We are a top HVAC company in Severna Park, Arnold, Annapolis, Glen Burnie and surrounding areas and counties! Give us a call today, 410-801-7771.


  • Our Services
  • Our Services: Full Installs

Customer Testimonials

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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.
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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.
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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!
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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.
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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