Commercial HVAC

Commercial HVAC Services in Belleville

Also Serving Throughout the Metro East Area


Are you ready for your business to get the most out of its HVAC equipment? BEL-O Cooling & Heating is a leader in providing O’Fallon area businesses with high-quality commercial heating and cooling services.

Our family owned company has extensive knowledge and expertise in the HVAC industry. Learn more about how our team is committed to serving the O’Fallon, Lebanon, and Belleville, Illinois areas with our trusted heating and air conditioning services.

Why Choose BEL-O Cooling & Heating for Commercial HVAC Services?

With over 60 years of experience in the HVAC industry, our talented commercial heating and cooling professionals have seen it all. We’ve worked with countless businesses just like yours to ensure that your customers remain safe and comfortable within your establishment. 

We know that commercial HVAC systems can often be pricey. That’s why our company offers financing programs that are second-to-none to help you alleviate some of the upfront costs. For more information about financing or the warranties associated with any of our commercial HVAC systems, don’t hesitate to contact us!

  • 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

Commercial HVAC Installation in O’Fallon, Illinois

BEL-O Cooling & Heating can provide the following heating and air conditioning equipment for your business:

Rooftop Units

Rooftop HVAC installations are hassle-free solutions for your company. Because these units are installed on your building’s rooftop, they free up more work space. Plus, they are energy efficient and customizable.

Split Systems

Split systems are ideal for large businesses which don’t want to invest in expensive and invasive ductwork. They can increase your energy savings and reduce future utility bills drastically. Split systems also give businesses the opportunity to separately control the temperature in various areas of the building. Contact us to learn more about the installation of a split HVAC system!


Commercial boilers are a great option for providing your business with heat. Boilers use radiant heating systems to circulate water and steam throughout the building, rather than heated air. These units are extremely energy efficient because no heat is lost through leaky ductwork. Boilers are also long lasting and dependable. Call us today to discuss the installation of a boiler system and other HVAC equipment for your commercial building.


Unlike a furnace, a chiller uses water or another liquid to transfer heat from one location to another to cool the building. Businesses of all types can take advantage of the benefits chillers offer.


BEL-O Cooling & Heating performs ductwork installations in the O’Fallon, Illinois area to ensure air flows properly throughout your commercial building. Contact us today to have one of our technicians inspect your current ductwork and determine what kind of service it needs.

For financing, rebates, and warranty information regarding the installation of new commercial HVAC equipment, contact us today. We’re happy to help!

Commercial HVAC Maintenance Agreements from BEL-O Cooling & Heating

With a maintenance agreement from BEL-O Cooling & Heating Inc., you’ll receive the following benefits and more:

  • A 1-year repair warranty
  • No overtime service rates
  • No overtime service diagnostics
  • A thorough 20-point heating and cooling inspection (two service visits per year)
  • 24-hour service priority status

Commercial HVAC Maintenance

Professional HVAC Maintenance Services in O'Fallon and Belleville, IL

We don’t just perform HVAC equipment installations. Our team of heating and cooling technicians in O’Fallon and Belleville, Illinois also completes regular maintenance on your commercial HVAC equipment. Some of the benefits of air conditioning and heating maintenance services include:

Prevent Costly Downtime with Regular HVAC Maintenance

By having consistent maintenance performed on your commercial HVAC equipment, you can rest assured that any minor issues will be addressed immediately before they lead to bigger repair issues. By catching these issues before they grow, you’ll prevent expensive repairs and possibly even a complete system breakdown.

Lower Your Business's Operating Costs

Maintaining your commercial heating and cooling system reduces operating costs for your business. Our company is ready to address issues with your heating or air conditioning system to prevent energy loss and lower your out-of-pocket expenses.

Boost Your Energy Efficiency and Save

An efficient HVAC system means that your unit won’t have to work as hard to create a comfortable working space. This decreases energy use and your utility bills.

Enhance Indoor Comfort for Your Business

The professional HVAC technicians at BEL-O Cooling & Heating will meet all of your business’ comfort needs so your customers and employees can stay safe and comfortable.

Maximize Your HVAC Equipment's Lifespan

In order to limit costs, we know that you want your HVAC equipment to last as long as possible. Our high-quality maintenance services will ensure your air conditioning and heating system operates at its prime for years.

Expert Commercial HVAC Repair Services in Lebanon, IL

HVAC equipment isn’t perfect, and you’ll likely require heating and cooling repair work at some point as your system ages.

Our team of highly trained comfort experts is ready to repair all major brands of commercial HVAC systems. Our commercial HVAC professionals are committed to customer satisfaction and are prepared to complete any heating and cooling job in the O’Fallon, Illinois area. Whether your air conditioner is leaking or making unusual noises, or your heating system isn’t providing efficient heat, our repair services can help. 

Emergency HVAC Repairs? Contact BEL-O Today!

Do you have an issue that requires immediate repairs? If so, BEL-O can help. We know that you can’t afford to have your HVAC system break down on you at the worst possible time, so our talented team is prepared to help you whenever you need us. 

  • “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. 

Prevents New Scale Formation
Available 24/7 Contact Us Today Expert Technicians Providing HVAC & Plumbing Solutions for Residential and Commercial Properties
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