For All Your Indoor Comfort Needs!

Dependable HVAC Services for Alton, Brighton & Jerseyville and Surrounding Areas

At Den-Son Inc. Cooling & Heating, we’re committed to keeping your city comfortable, whether you’re at home or work. We have a full range of services, from AC installation to heat pump repair to commercial HVAC consultation. We’re a Trane Comfort Specialist dealer; however, we service all makes, models and brands.

Our honest approach, the relationships we maintain with our customers, our generational connection, and an influx of referrals set us apart from other HVAC companies. We strive to always make our customers comfortable, and we stand behind our work. If an HVAC issue isn’t rectified, then we will come back to fix it.

HVAC Services

Air Conditioning Installation and Repair

Our air conditioning installation and repair services are designed to keep your family cool, even on the hottest summer days. Whether you need an efficient central air system designed for your newly constructed home or a high-tech upgrade to replace an aging system, our team of service technicians is at your service. We also provide a free second opinion if another HVAC company recommends equipment replacement. As a full-service air conditioning contractor, Den-Son offers 24/7 emergency repair services to ensure that your cooling system always keeps you comfortable.

Heating Installation and Repair

When those warm summer days fade away, we won’t leave you out in the cold. Den-Son also provides comprehensive heating system installation and repair and free estimates on new installations. From energy-efficient heating system design to emergency furnace and heat pump repairs, we’re the only heating contractor you need.

HVAC Services

Air Conditioning Installation and Repair

Our air conditioning installation and repair services are designed to keep your family cool, even on the hottest summer days. Whether you need an efficient central air system designed for your newly constructed home or a high-tech upgrade to replace an aging system, our team of service technicians is at your service. We also provide a free second opinion if another HVAC company recommends equipment replacement. As a full-service air conditioning contractor, Den-Son offers 24/7 emergency repair services to ensure that your cooling system always keeps you comfortable.

Heating Installation and Repair

When those warm summer days fade away, we won’t leave you out in the cold. Den-Son also provides comprehensive heating system installation and repair and free estimates on new installations. From energy-efficient heating system design to emergency furnace and heat pump repairs, we’re the only heating contractor you need.

HVAC Maintenance

No matter how high-tech your heating and cooling system might be, it needs regular maintenance to operate smoothly and efficiently. Whether you want to schedule a one-time HVAC tune-up or you’d rather commit to a maintenance agreement, the Den-Son team is here to help. Our convenient and efficient HVAC tune-ups can keep your HVAC system running strong, extend the life of your HVAC equipment, and even reduce the number and cost of repairs.

Our Preferred Customer Maintenance Agreement members aren’t charged an overtime fee in the event of an emergency. Take advantage of this guarantee, and sign up for our maintenance plan today.

Ductless Air Conditioning

Need a heating and cooling solution that isn’t a central system? A ductless air conditioner or heat pump could be just the solution your family needs. Whether you need to cool or heat a single room, a section of your home, or your whole house, mini-split or multi-split systems offer convenient and efficient heating and cooling.

If you aren’t sure whether a ductless system or a central HVAC system is right for your home, our team of heating and air conditioning experts has the answer. We offer a product guarantee for 30 days. Under this guarantee, if your system breaks or the issue comes back again, then our service technicians will come back out and fix it for free.

Indoor Air Quality

Whether you’re concerned about airborne contaminants, humidity level, or stale air, we have you covered. Our team offers a full range of indoor air quality add-ons designed to work effortlessly with your HVAC system. When combined with an energy-efficient heating and cooling system, our indoor air quality add-ons ensure clean, healthy air during every season. Our range of whole-house air purifiers, humidifiers, dehumidifiers, and ventilators provide the indoor air quality your family needs to thrive.

Commercial HVAC

Looking for a trusted team of HVAC professionals to provide heating, cooling and indoor air quality services for your business? We know how to keep your employees and customers comfortable, and we offer a 100 percent satisfaction guarantee. Our commercial HVAC services are ideal for both small and large businesses.

Whether you need a new heating and cooling system for your commercial building, annual maintenance or emergency HVAC repairs, Den-Son is equipped to handle your commercial heating and cooling needs.