Dennis Heating and Cooling

06/17/2026

Did the high winds cause any outages for you today?

Power outages put strain onto your HVAC systems. If something seems off with your AC today, give us a call so we can make sure to have you comfortable and ready all summer long.

815-375-8859

05/11/2026

If you live in Northern Illinois, you know the current weather routine:
Heat on at night, AC on during the day, then back again the next day.

Your HVAC system is running overtime this spring. Before summer temps are here, let us make sure that it’s running efficiently.

Give us a call today to schedule service for maintenance checks to keep your family comfortable in all types of weather, 815-375-8859

04/08/2026

Big storms have been rolling through and there’s more on the way.

Here are some things to look at after a storm:

-clean off sticks/leaves around your outdoor unit
-make sure your furnace/AC kicks back on after power flickers
-check your filter if things got dusty
-listen for anything sounding “off”

Most of the time everything is fine, but it’s always good to catch a small issue early.

If something doesn’t seem right, feel free to call and get scheduled at 815-375-8859

03/24/2026

Why is seasonal maintenance important in protecting your heating and cooling system and helpful to avoid unexpected breakdowns?

In the Midwest, our seasons can change quickly causing your HVAC system to work hard in keeping your home comfortable.

Regular upkeep helps in:
-improving efficiency and lowering energy bills
-extends the life of your equipment
-catching a small issue before it becomes a costly repair
-maintains better air quality in your home
-keeps your system running safely and reliably

Make sure your system is running properly and give Dennis a call today to schedule for seasonal maintenance 815-375-8859

03/02/2026

Dennis Heating and Cooling provides dependable HVAC service throughout DeKalb County and surrounding areas.
With over 20 years of experience, we offer professional heating and cooling repair, maintenance, and installation services that you can trust.
As temperatures begin to shift this spring, now is the time to ensure your system is operating efficiently and safely.
For scheduling or service inquiries, contact Dennis Heating and Cooling today at 815-375-8859

10/13/2025

Cooler weather is coming!
Keep your HVAC system running efficiently all season long with routine maintenance.
Call or message us to get your fall service scheduled today 815-375-8859

09/08/2025

Dennis is on vacation until Thursday September 11th, but feel free to call/message to get on the schedule! Thank you!
815-375-8859

08/23/2025

It’s not too late for a clean and check! Give us a call to get scheduled before the cold weather gets here.

06/12/2025

We have updated our website. Please take the time to visit and leave a review if we’ve done work for you in the past! https://www.dennisheatingcooling.com

Make sure to give us a call if you need anything. Next week will be warming up!

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,....

10/02/2024