For All Your Indoor Comfort Needs!

Maximize the Value of Your HVAC System.
Join our Preferred Customer Maintenance Agreement for $145!(Normally $165)

Maximize the Value of Your HVAC System.
Join our Preferred Customer Maintenance Agreement for $145!(Normally $165)

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

When it comes to indoor comfort, 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.

Den-Son Is Your HVAC Contractor

At Den-Son, we know how important heating and cooling is for your home and your business. That’s why we’re proud to offer reliable HVAC services provided by an experienced team of technicians. Our 100 percent satisfaction guarantee means we’re committed to your comfort and satisfaction, no matter what the weather brings.

We take pride in being honest, having personal relationships with our customers and keeping them comfortable. Customers refer people to us and buy from us because of our close generational ties. When you partner with Den-Son, you become part of a family. To learn more about our HVAC services, call today!

HVAC Contractor

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:

  • Load calculation
  • Air conditioning system design and installation
  • AC repair
  • Air conditioning service
  • Air conditioning maintenance agreements

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:

  • Heating system design and installation
  • Heat pump, boiler, furnace and geothermal heating system repairs
  • Heating maintenance agreements
  • Free estimates on new installations

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.

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.

Trane Ductless AC

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.

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.

Commercial HVAC

What People Are Saying

testimonial-stars
Den-Son is a very reputable and honest firm that provides what they promise, and they don’t cut corners.

Scott H.

testimonial-stars
This service “DenSon” has been prompt & reliable for several years on my rentals. Wouldn’t trust anyone else!

Shirley M.

testimonial-stars
We’re so happy with our new furnace. Wow! Is it quiet. Just like he promised. We would definitely recommend Den-Son!

Google User

HVAC Info & Tips

Are You Suffering From Poor IAQ in Your Brighton, IL Home?

Many homeowners in Brighton, Illinois, suffer from poor indoor air quality (IAQ) without realizing it. The signs of poor IAQ often go unnoticed or are mistaken for something else, like allergies or cold symptoms. Learning to recognize them is the first step toward...

What’s the Best Temperature to Set My Water Heater?

If you're like most homeowners in Alton, Illinois, you probably don't give a lot of thought to your water heater — unless you happen to run out of hot water. Then, it becomes one of the most important appliances in your home. In a situation like this, one of the most...

3 Ways to Prep Your HVAC for Fall in Alton, Illinois

Proper HVAC maintenance is vital to the lifespan of your unit. If you fail to provide proper attention and care to the unit, it can decrease efficiency, increase allergy symptoms, and even lead to having to replace the entire unit. Ideally, you will want to prep your...

Have Questions or Need Service?

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.

Service You Can Trust

trane authorized dealer Energy Star Trane Better Business Bureau