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2183 West Terra Lane, O'fallon, MO 63366

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Ductless HVAC Systems from Reliable Heating & Cooling in Florissant, MO

Reliable Heating & Cooling company, based in Florissant, MO, is your go-to resource for all things HVAC, particularly when it comes to Ductless HVAC systems. We’ve seen a significant increase in interest surrounding the concept of these systems, also known as ductless mini split systems. These systems provide targeted comfort by conditioning the air for one or select few areas in a home or business. Unlike traditional central system, it imparts both cool and warm air directly into different areas of your home.

Ductless Mini Split System

A ductless mini split HVAC system does precisely what its name implies – it splits the heating and cooling function of HVAC systems into individual units placed strategically in various places throughout a house. You can completely customize what rooms you want to cool or heat, and to what degree. Given that this system does not require any ducts to operate, its installation process is much simpler and less disruptive. At Reliable Heating & Cooling, we specialize in assisting homeowners to transition into more sustainable, energy-efficient, and cost-effective means for heating and cooling their residences.

Ductless Split Installation in Florissant, MO

Reliable Heating & Cooling proudly serves the community of Florissant, MO, and has done so since we were founded in 1972 by Ken and Marilyn Patterson. We incorporated on March 20, 1980, with one clear goal – to create a comfortable and healthy living space by providing the highest degree of quality installation and service work in the residential and light commercial marketplace. We uphold this mission with every ductless split installation we conduct.

Our team of skilled industry experts takes each job seriously. We know that each installation is unique and that each homeowner has particular needs and expectations. It is our job to deliver a personalized solution designed to fit your home’s configuration and your lifestyle, and we never compromise.

Reliable Heating and Cooling: Your Partner in Comfort

Nothing is more important to Reliable Heating & Cooling than honesty and integrity in our business. These are the pillars Reliable Heating & Cooling has built its reputation on over the decades, and they remain integral in how we conduct business today. We understand that an HVAC system is a significant investment, and we aim to make that investment as worthwhile, reliable, and valuable as possible.

Ductless HVAC systems can provide you with the comfort, ease of installation, and energy efficiency you need to properly heat and cool your home. If you are in the Florissant, MO area and are considering installing a ductless system in your home, Reliable Heating & Cooling is ready to provide you with the necessary assistance. With us, you will have a system that is optimally configured and installed for maximum performance, comfort, and efficiency. The unparalleled service, superior value, and expert technical know-how that our team brings to each job make Reliable Heating & Cooling the top choice in Florissant, MO for all of your HVAC needs.

Ductless Split Installation, Ductless HVAC & Ductless Mini Split Florissant, MO & Florissant, MO

Ductless Heating in Florissant, MO | Ductless Mini Split Florissant, MO

Ductless HeatingDuctless Air Conditioning ∴ Florissant, MO ∴ Florissant, MO

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Customer Reviews
What our customers are saying

Have been with them for more than 10 years. They provide exceptional service…from the time they call to remind you about setting an appointment to the actual service day. Derek (and all their other technicians) are knowledgeable, professional, prompt, and open to listening to questions and pay attention to details. Never had a problem with anything. Thank you for a job well done. Good pricing.

Seema Chouhan

We have used Reliable Heating and cooling for all of our heating and cooling needs. We needed some water heater work and Ralph came out and took care of it right away. Ralph was very professional and knowledgeable. He got the job done very quickly and everything is working great! I always recommend Reliable to family and friends. They truly are Reliable!

Chris Lopez

Had a small gas leak for a property I was helping a friend sell and we found out late last night. We reached out to Reliable H&C and Derrick was over first thing in the morning. He was friendly, professional and knowledgeable. He answered my questions with a smile. Derrick was a rock star. Will absolutely call him again. Bravo

Connor Kapp

We had a emergency water leak problem with our AC unit in the basement of our recently purchased condo. Called Reliable and Derrick was there within a couple of hours. He was polite, knowledgeable, and friendly. Derrick quickly found the problem and repaired it. He also checked the system overall, pointed our some concerns and answered all my questions. I can’t say enough about how satisfied we were with Derrick and Reliable Heating & Cooling! We would definitely recommend them!!! Thanks again!!!!

Terry Mills

I had a system malfunction on Sunday evening December 12, 2022 on my Carrier Infinity ICS purchased in 2008.I am a first time caller to Reliable. Marty called me back and had his Tech dispatched at 8 AM the next day. The unit had failed and was dangerous to use. He had a new system by the next morning. They installed it and I was completely satisfied with their service and response time. I overwhelmingly recommend Reliable and will be using them from now on.


Reliable has installed and maintained our last 2 furnaces and AC. Our experience with them has been great. Just yesterday we had an issue with our AC. I talked to Marty and he said he’d have someone out the next day. They even were able to accommodate us with an afternoon call. Derrick arrived promptly on time and had us up and going again in 15 minutes (bad capacitor on the condenser unit fan motor). With the prediction of high 90 temps, we were so thankful to have AC working again.

Keith Scherer

Ductless Air Conditioning

Ductless Heating

Florissant, MO