Welcome to Dennis Heating & Cooling

Dennis Heating and Cooling is a family owned and operated business that is committed to providing the highest quality and best value for Heating, Cooling, and Air Quality products throughout DeKalb County – DeKalb, Sycamore, Genoa, Kingston, Malta.  We service, repair, replace (install) furnaces, air conditioners, and Air Quality products, and  provide annual maintenance for all makes and models of furnaces and cooling equipment.  Whatever your needs you can rely on our installation, repair, or maintenance to be timely and professional. You’ll appreciate our straight forwarded, no hassle approach!  Technician with over 20 years of experience!  Honest, Fair and Trustworthy!

Services

Heating Service, Repair, & Installation

Expert heating installation for a cozy home. Trust us for efficient and reliable service.

AC Service, Repair & Installation

Quick and reliable AC repair to keep your home cool. Stay comfortable all summer long.

Services 

Annual Maintenance for all makes and Models

Heating & AC Service, Repair and Installation

Air Quality Products

Frequently Asked Questions

Do you offer maintenance services?
Yes, we offer comprehensive maintenance services to ensure your HVAC system functions efficiently.

What brands do you work with?

We work with all brands in the industry to provide you with the best products and solutions.

How quickly can you respond to emergencies?
We respond to emergencies promptly, usually within hours of your call.

Just like another reviewer, we called Dennis at the last minute! Not only was he responsive, but he came out within a few hours and fixed something that I broke while trying to do a repair. Professional, knowledgeable (he didn't mind answering all my questions) and fair! If you are in need of heating or AC help give Dennis a call, you wont regret it!

~Rich Kakkuri

About us

Dennis Heating & Cooling is a family-owned and operated business committed to providing the highest quality HVAC products and services in DeKalb County, IL. With years of experience, we prioritize customer satisfaction and strive to exceed expectations.