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Quality Heating Repair & HVAC Services for Alton, Brighton & Jerseyville and Surrounding Areas

When it comes to heating repair and installation, Den-Son Inc. Cooling & Heating leads the way in terms of service, products and workmanship. No matter the season, our team of heating, ventilation and air conditioning (HVAC) professionals will keep you comfortable, your air clean, and your heating and air conditioning system running smoothly.

Read Our Latest Reviews

  • April 2022, Recent install of Trane Furnace and Air Conditioning, very Professional and an outstanding crew of three. Ex... Read More
  • These guy's/gal's are the bee's-knees! They've helped me with the new install of 3 Furnace+AC units now and I couldn't b... Read More
  • I can't say enough great things about the service I received from Den-Son. My issue was somewhat unique in that it invo... Read More

Air Conditioning Repair, Maintenance and Installation

At Den-Son, we have years of experience with air conditioning repair, maintenance and installation in residential settings throughout the metro area. Don’t let those hot, sticky summer days get you down. Our team provides the air conditioning service you need, no matter the weather. Here are some of the services we offer:

In the event of an emergency, we offer 24/7 emergency services. If your system breaks down and compromises the comfort in your home, we will have one of our service technicians come out to you to fix the issue. We do not charge Maintenance Agreement customers an overtime fee.

Heating System Repair, Maintenance and Installation

Worried about getting left out in the cold? Our heating system services will keep you warm and toasty, even on the chilliest winter nights. Concerned about efficiency? We have you covered. At Den-Son, we offer all of these heating needs:

Need a second opinion on whether you actually need your equipment replaced? Den-Son will advise you for free! Contact us for reliable heating services today.


Call us today to schedule an appointment. We’re committed to your comfort and satisfaction, no matter what the weather brings. When you partner with Den-Son, you become a part of our family. Our service areas include Brighton, Alton, Jerseyville, Batchtown, Alhambra, IL and the surrounding areas.

Indoor Air Quality

Your home is your family’s oasis. That means your air supply should be as clean and healthy as possible. From air cleaners that eliminate indoor pollutants to humidifiers and dehumidifiers that control moisture, our indoor air quality add-ons are designed to clear the air.

Don’t know where to start with boosting your indoor air quality? We can pinpoint your needs and help you choose the ideal solution for your home.

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Ductless Air Conditioning

Want to go duct-free? Our ductless air conditioning systems and heat pumps can cool and heat selected rooms, a whole floor in your home, or even your entire house without the added expense of ductwork. We can install these efficient systems, which can keep you comfortable in just about any kind of weather.

We offer a product guarantee for 30 days in case your system breaks, or the issue reoccurs after our service techs have fixed it. In this case, we will come back for free.

Sound too good to be true? Talk with our team of HVAC professionals to find out whether ductless is the right solution for you.

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Commercial HVAC

Our heating, cooling and indoor air quality services don’t stop with your home. At Den-Son, we also offer commercial HVAC services designed to keep your business comfortable and healthy for customers and employees alike. We’re here for you, whether your business needs a new heating and cooling system, annual HVAC maintenance, or emergency HVAC repairs. Although we’re a Trane Comfort Specialist dealer, we service all makes, models and brands. Don’t hesitate to call our experienced team for all your commercial HVAC needs.

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