Commercial HVAC in Connecticut

Since 1967, our Connecticut HVAC Company has been providing quality air conditioning and heating services to businesses and families throughout all of CT. Family owned and operated, WJ Dornfeld Co. has a professional, trained and certified HVAC staff that will take care to resolve your heating and cooling issues in a timely, efficient manner.

Residential & Industrial HVAC Services

Our HVAC business is built on providing dependable and high quality Heating, Ventilation and Air Conditioning (HVAC) service for both residential and commercial customers. We are licensed and insured with fully equipped HVAC service vehicles.


With over 40 years of Residential and Industrial HVAC experience, WJ Dornfeld Co has a solid reputation of quality workmanship.  From HVAC designing and constructing to servicing and maintaining; WJ Dornfeld Co. consistently strives to provide a seamless experience, while paying attention to our clients’ special heating and cooling needs.

Heating & Cooling Services

HVAC Repair
HVAC Installation
Maintenance Contracts
Central Plants
Cooling Towers
Computer Rooms
Industrial Chiller Systems
HVAC Design Build
Commercial HVAC
Residential HVAC

Commercial HVAC in Connecticut

At WJ Dornfeld Co. we work closely with you to ensure that your every need is fulfilled and satisfied. We will strive to provide you with dependable and quality Industrial HVAC service, so that you can do the same for your customers. As our HVAC partner and client, you are treated with the utmost respect and a genuine concern for your needs. Our objective is to provide you with seamless Commercial HVAC service so that your business will not be interrupted by a heating or cooling issue.


Residential HVAC Services in CT

We specialize in residential HVAC for custom home designs where total comfort matters. Our trained HVAC service technicians will show respect for your home and your property and will take the time to answer your questions. We will earn your trust by listening to your needs, performing an in-depth HVAC evaluation and presenting you with quality options. Our objective is to keep your home cool in the summer and warm in the winter, while respecting your schedule and your budget.


Our Clients