Connecticut HVAC


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

Our 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 service vehicles.

With over 40 years of HVAC experience, WJ Dornfeld Co has a solid reputation of quality workmanship.  From 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.


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

Commercial HVAC

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 service, so that you can do the same for your customers. As our 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 service so that your business will not be interrupted by a heating or cooling issue.


Residential HVAC

We specialize in custom home designs where total comfort matters. Our trained 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 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