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.


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


Read what 300+ clients have said about our services:

Recent Work

1515 Circle Drive,Annapolis, MD, US

Cornett Heating & Cooling installed a cutting-edge 3-ton Bosch heat pump. Our expert technicians seamlessly integrated these top-of-the-line systems, ensuring optimal performance and energy efficiency for our valued customers. Trust Cornett Heating & Cooling for reliable HVAC solutions for any issues you may be having. We have a great reputation in Anne Arundel County and surrounding areas.

Out Services Include: https://www.cornetthvac.com/hvac-services04f155ba

  • Air conditioning maintenance and repairs 
  • New air conditioning installations
  • Heating maintenance and repairs
  • Gas furnace installations


1515 Circle Drive , Annapolis, MD, US
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  • Our Services
  • Our Services: Full Installs
  • Our Services: Repairs

127 Hatton Drive,Severna Park, MD, US

This was a 3-ton Bosch furnace that Cornett HVAC installed in Severna Park Maryland. Give us a call today, 410-801-7771  to schedule a routine maintanence check on your system before it's too late. With the winter months coming, it's important to get ahead of the issues that could be looming.


When choosing between a 3-ton and a 4-ton Bosch furnace system involves considerations related to the heating and cooling needs of your space. Here are some factors to keep in mind:


  1. Size of the Space:
  • The primary factor in determining the appropriate size is the square footage of the area you want to heat and cool. Generally, larger spaces require more heating and cooling capacity. However, other factors like insulation, ceiling height, and local climate can also influence this.
  1. Insulation and Energy Efficiency:
  • Well-insulated homes may require less heating and cooling capacity. Consider the insulation quality of your home, as a well-insulated home can retain heat in the winter and cool air in the summer more effectively, reducing the load on your HVAC system.
  1. Climate:
  • The local climate is a significant factor. If you live in an area with extreme temperatures, you might need a larger system to handle the demands of both heating in the winter and cooling in the summer.
  1. Occupancy and Usage:
  • Consider the number of people in the space and the amount of time the space is occupied. More occupants and longer usage may require a larger system.
  1. Ductwork:
  • Ensure that your ductwork is properly sized for the chosen furnace system. Inefficient or undersized ducts can impact the performance of the HVAC system.
  1. Manufacturer Guidelines:
  • Check the manufacturer's specifications and guidelines for their furnace systems. They often provide recommendations based on square footage and other factors specific to their products.
  1. Energy Efficiency Ratings:
  • Compare the energy efficiency ratings (SEER for cooling, AFUE for heating) of the different models you are considering. Higher efficiency units may cost more initially but can save you money on energy bills in the long run.
  1. Consult with HVAC Professionals:
  • It's advisable to consult with HVAC professionals or contractors. They can perform a load calculation for your specific home, taking into account all relevant factors to determine the appropriate system size.
  1. Warranty and Maintenance:
  • Consider the warranty and maintenance requirements of each system. Some systems may have longer warranties or require less maintenance, which can impact the overall cost of ownership.
  1. Budget:
  • While not directly related to the size, consider your budget for the purchase and installation of the HVAC system. A larger system may be more expensive upfront and in terms of ongoing operational costs.


Ultimately, it's crucial to strike a balance between system size, energy efficiency, and cost to ensure optimal comfort and cost-effectiveness for your specific situation.

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

Customer Reviews

Laurie Heyman — review for Cornett Heating & Cooling
Laurie Heyman
Preliminary estimate to install a complete HVAC system. Danny came on time, and was easy to communicate with. Looking forward to moving ahead with this needed project.
Jake Stein — review for Cornett Heating & Cooling
Jake Stein
Highly recommend Cornett Heating & Cooling! Our technician, Zach, did an amazing job. He was punctual, professional, and thoroughly checked our system to make sure everything was running perfectly. He was super respectful of our home and took the time to answer all of our questions. Will definitely be using them again!
John Savvides — review for Cornett Heating & Cooling
John Savvides
Super professional and super quick and efficient service
Patrick Bellotte — review for Cornett Heating & Cooling
Patrick Bellotte
Danny was early for our appointment and gave me great advice.
Joe B — review for Cornett Heating & Cooling
Joe B
Another great visit by Cornett (Chris) who explained everything on the semi annual visit. Very thorough and made a few recommendations and one minor repair on the spot. Value a trusted local company.