Collinsville, IL

BEL-O Cooling & Heating Inc. takes pride in providing residents of Collinsville, IL with the best plumbing heating, cooling, and IAQ services. No matter the issue, our experienced team of professionals can provide a quick and effective solution. Get in touch with us today to learn more about any of the services that we offer, or to schedule an appointment for service.

Contact BEL-O for HVAC & Plumbing Services in Collinsville, IL

Replacing HVAC or plumbing systems can quickly become expensive. That’s why we’re proud to offer financing through Wells Fargo and Microf. Visit us here to learn more about your financing options.

When any HVAC or plumbing issues arise that require service, be sure to contact BEL-O as soon as possible. Our professionals are backed by years of knowledge and experience and they have the best tools available to provide a quick and effective solution. Contact the Collinsville, IL, HVAC contractors at BEL-O today to learn more or to request an appointment for quality service.

  • HomeAdvisor Screened & Approved
  • BBB A+ Accredited Business
  • Carrier Factory Authorized Dealer
  • Carrier President's Award
  • NATE
  • Sheet Metal Workers' International Association
  • Southern Illinois Builders Association
  • O'Fallon - Shiloh Chamber of Commerce Member
  • Plumbers & Pipefitters Local 101 - Belleville, Illinois
  • Daikin DCP Accredited

Collinsville, IL Heating Services


The most popular heating system for Collinsville homeowners, furnaces are terrific at providing effective and energy-efficient heating. Whether you’re looking to replace an existing furnace, or you need to repair an issue with your current unit, trust the quality heating experts at BEL-O for quick and reliable services.


Though not as popular as furnaces, boilers are still a great way to heat a home. Boilers heat water within the system and use the produced steam to provide a home with heat. Boilers can run on electricity, gas, or oil, allowing you to choose the type of system that best meets the needs of your home.

Ductless mini splits

Ductless mini splits, as the name implies, don’t require any pre-existing ductwork to provide heating and cooling. Each system can be placed in different rooms of the home, providing optimal temperature control from room to room.

Gas fireplaces

A gas fireplace is more than just a great way to heat a room in your home. It also adds beautiful scenery. When any issues arise or your gas fireplace requires maintenance, be sure to get in touch with our professionals as soon as possible.

Heat pumps

Popular among Collinsville homeowners because they can both heat and cool a home efficiently, heat pumps are a great option. We offer installation, repair, and maintenance services for these units.

Collinsville, IL Air Conditioning Services

Central air conditioners

A central air conditioner is the most traditional type of AC unit. Whether you need to install new air conditioning equipment or repair an existing unit, the professionals at BEL-O are there for you.

Ductless mini splits

Not requiring ductwork can provide your home with significant energy savings and even more effective cooling. To learn more about how these units can be separately installed in different rooms throughout the home, reach out to us today. 

Heat pumps

Heat pump systems are extremely reliable and can be counted on all year long. They’re among the most effective ways to cool your home. Contact us today to learn more about a heat pump’s cooling process.

Collinsville, IL Indoor Air Quality Services

Air cleaners

Breathing clean air is essential in keeping your home comfortable and healthy. Whole-house air cleaners work to eliminate any contaminants and pollutants that might be in your home’s air supply.

Air purifiers

If your home is plagued by odors, dust, or pet dander, a whole-house air purifier can help. These systems push your air through filters to ensure that any impurities are taken out of the air supply.

Duct cleaning

Over time, dust, dirt, and other contaminants build up in your air ducts and cause your HVAC system to become far less effective. Have your ducts cleaned by a professional to improve your HVAC system’s overall effectiveness and efficiency.


Along with the winter months comes cold, dry air. Improve your home’s humidity levels by installing a whole-house humidifier on your HVAC system.


From traditional thermostats to Wi-Fi thermostats and more, the type of thermostat that your home uses is truly up to you. Get to know more about each type of thermostat by contacting us today.

Zone control systems

Are some rooms of your home the right temperature, while others are a few degrees warmer or cooler? Zone control systems can help keep everyone within your home comfortable.

Collinsville, IL Plumbing Services

Your home’s plumbing equipment plays a pivotal role in keeping your home safe. At the first sign of any issues, be sure to reach out to a professional. Acting quickly can be the difference between a minor and a major plumbing project repair.

To ensure that you’re covered during any plumbing issue, our plumbing company offers the following plumbing services in Collinsville, IL:

  • Plumbing repair
  • Fixture installation
  • Garbage disposals
  • Gas lines
  • Sewer lines
  • Water heaters
  • Water leaks
  • Commercial Plumbing

Reach out to us today to learn more about our superior service or to schedule an appointment.

  • “Couldn't wish for a better company and employee to service my home heating and cooling.”

    Karen H.
  • “Jason was professional and courteous.”

    Sue S
  • “They replaced my sump pump.”

    Rick H.
  • “Anthony thoroughly checked the gas water heater for proper operation”

    Becky G
  • “Jason was on time, polite, and professional.”

    Wayne S
  • “The experience was great as he took his time to clean and inspect the system and to go over any findings/recommendations he had for us.”

    Stephanie S.
What Sets Us apart:
  • 1. Third Generation, Family-Owned Since 1959

    Our grandfather started this business to serve his community decades ago, and we take the same pride in that service. 

  • 2. Decades and Decades of Industry Experience

    Since we opened, we've prioritized expertise in both traditional and innovative industry practices to serve you better. 

  • 3. Honest & Transparent Technicians Who Never Oversell

    We want to provide you with a number of solutions and help you pick the right one for you, not the right one for us. 

  • 4. Full Capability One-Stop Shop for Heating & Cooling

    From keeping the air in your home safe and cool to manufacturing sheet metal, you are in capable hands. 

Learn More About Our History & Capabilities
About Us
Available 24/7 Contact Us Today Expert Technicians Providing HVAC & Plumbing Solutions for Residential and Commercial Properties
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