Shamrock Heating & Cooling: Serving St. Charles for Quality HVAC

Shamrock Heating & Cooling has been servicing St. Charles’s air conditioners, boilers and furnaces since 1971. In the HVAC business, 40 plus years is a very long time. We’re local and family-owned and operated. In fact, we are now in our second generation!

Shamrock Heating & Cooling specializes in residential heating and cooling. Our technicians can repair any make or model of home central air conditioner or furnace unit that is made. We’ve seen nearly every make and model HVAC unit made and we’ve fixed them all!

St. Charles, if you need EMERGENCY HVAC SERVICE, we’ll be there fast! We are available 24/7, every single day of the year. You will like our work and our great sense of ethics.

If you need an air conditioning or furnace installation of any kind, we should be your first choice. As we work with all manufacturers, we will sit down with you and review all of your options to match your particular wants to the best system for your needs.

Of course, we also install other HVAC components such as whole home humidification and air purification. We also have a complete duct cleaning service and top-notch safety inspections.


Schedule an appointment today with Shamrock Heating and Air Conditioning to keep your system running safely and efficiently.

We Help St. Charles with their HVAC Challenges!

Being a local provider, we understand St. Charles’s weather conditions! That is why we are so responsive to winter emergency calls. We fix the problem right the first time!

Much of our St. Charles HVAC business comes from referrals. It is an honor we never take lightly. We make sure our technicians are the very best trained in the entire State of Illinois. After their extensive HVAC training, we make sure our technicians also embody our customer service standards.

For example, we proudly furnish our St. Charles HVAC professionals with infrared video camera equipment. The cameras can see the smallest possible cracks, flaws, dirt, leaks and rust spots. We partner with our customers in this process to show them the problem as we see it! We can fix a minor problem before it has the chance to become a major difficulty.

Very Best in HVAC for St. Charles & Vicinity Since 1971

We are longstanding members of the Better Business Bureau (BBB) with an A+ rating and Angie’s List has consistently given us a Superior Service Provider marks. We have testimonials and endorsements from many area customers that we are always happy to share.

Our customer service team is standing-by to be of assistance.