Your Expert Furnace & Air Conditioning Specialists in Collinsville, IL

Proudly Serving Madison County & the Surrounding Cities

Dependable Air Conditioning & Furnace Experts in Collinsville IL & the Surrounding Areas

Garrett Heating & Cooling has been providing quality and affordable HVAC services to residential clients for over 25 years in the Collinsville and Caseyville, IL area. Our team of experts takes pride in repairing your heating and cooling systems with the utmost efficiency so that you never have to spend money on additional repairs. Whether your air conditioning unit is blowing hot air, or your water heater is leaking, Garett Heating & Cooling is here to repair all HVAC brands, makes, and models to get your home running again! Every one of our repair, installation and maintenance services is available 24/7 when you need us most. What are you waiting for? Don’t let your failing heating and cooling systems disrupt your daily life, call us today and schedule an appointment or request emergency service. Our expert and certified technicians are dedicated to your complete satisfaction!

Our Heating & Cooling Services

AC Repair
Is your AC unit blowing hot air? Has it stopped working entirely? Call on our experts to provide quality and affordable air conditioning repair services today.
AC Installation & Replacement
If your air conditioning unit is beyond repair, our technicians will remove your old AC unit and install a quality name brand system like American Standard.
Furnace Repair
When your furnace goes out, you can rely on Garrett Heating & Cooling to repair your gas or electric heating system in no time, all at an affordable price.
Furnace Installation & Replacement
When it’s time for your furnace to be replaced, our technicians are here to remove your old heating unit and replace it with one of the best heating systems on the market.
Boiler Installation & Replacement
Looking for a new way to efficiently heat your home? We provide boiler installation and replacement services for your home in the Collinsville, IL area.
Humidifiers & Dehumidifiers
Don’t settle for dry eyes are itchy skin due to poor air quality. Invest in a humidifier or dehumidifier installation service from Garett Heating & Cooling.

What Our Customers Are Saying

Customer service is our top priority, that’s why we strive to complete every job with the highest care and quality.

Why Hire Us?

Over 25 Years of Experience

With over 25 years of experience in the heating and cooling industry, you can rely on our team to complete every job right the first time, guaranteed!

Commitment to Quality

We never leave a job unfinished. Our team prides itself on conducting quality repairs, installation, and replacement HVAC services every single time.

24/7 Emergency Service

We offer 24/7 emergency heating and cooling services so that when your furnace or AC goes out in the middle of the night, our technicians will be there.

Competitive Pricing

Our competitive pricing is like none of our competitors in the area. We never overprice our services and always try to get you the best deal on your HVAC repairs.

Certified Technicians

Every one of our HVAC technicians is certified, licensed, and experienced in all areas of our heating and cooling repairs so that you always get the best service.

Free Estimates

Want to plan for your next HVAC service? We offer free estimates on all of our furnace and air conditioning services so that you are always prepared.

Request a Service

Complete the form below to connect with our expert HVAC team!

About Our Company

Our company has over 25 years of experience in the heating and cooling industry, providing expert HVAC repairs and installation services to homeowners throughout the Collinsville, IL area. As a family-owned and operated business, our team of certified technicians is dedicated to quality customer services. That’s why we treat your home like it’s our own, and only work with the top name brands in the industry to give you products that will last for decades to come. We treat our customers like family, which is why our customers have always called us when their heating or cooling systems are experiencing problems. You can rely on Garrett Heating & Cooling to provide expert repairs on all of your HVAC brands, makes, and models. Get a free estimate or 24/7 emergency repair services when you call our shop today!

Cities We Serve

We’re excited to announce that Jeffrey and Makinzie Hosier are the new owners of our business and we’re confident that he’ll do a great job leading us into the future.  Under Jeff’s leadership, we’ll be able to continue providing the same great services that our customers have come to expect.

Thank you for your continued support.   

Herbert and Miranda Garrett