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De Soto IL AC and Heating Experts

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HVAC Services in De Soto, IL | Charlie’s Air Conditioning & Heating

Reliable Heating & Cooling for De Soto Homeowners

At Charlie’s Air Conditioning & Heating, we’ve been proudly serving the families of De Soto, IL with trusted HVAC services since 1982. Located just minutes from Carterville, we understand the unique heating and cooling needs of Southern Illinois homes. Whether you need fast AC repair, expert furnace replacement, or energy-efficient heat pump installation, our experienced technicians are ready to help—backed by over four decades of hands-on experience.

Air Conditioning Repair & Installation in De Soto

When the summer heat hits De Soto, you need an air conditioning system that can keep up. Our technicians are trained to diagnose and repair all AC brands and models. If it’s time for a new system, we offer expert AC installation near Carterville, IL and surrounding towns, including De Soto. From air conditioners to air conditioning maintenance, we ensure your system runs smoothly all summer long.

Need emergency help? We’re known for quick, practical service—schedule service today.

Common AC Problems we fix in De Soto

  • Refrigerant leaks and recharging
  • Compressor failures and replacements
  • Electrical issues and faulty capacitors
  • Frozen evaporator coils
  • Thermostat malfunctions

Furnace Repair & Heating Services for Cold Illinois Winters

Our winters can be harsh, but you can stay comfortable with heating service from Charlie’s. We provide fast, affordable heating repair, furnace installation, and regular heating maintenance in De Soto. If you’re wondering whether to repair or replace, we can walk you through your options and provide a free estimate.

We also work with modern, energy-saving heat pumps and hybrid systems to maximize efficiency.

Year-Round HVAC Maintenance in De Soto

Regular maintenance is the best way to avoid emergency repairs and extend the life of your HVAC system. Our preventative HVAC maintenance program helps De Soto homeowners reduce costs and enjoy better comfort throughout the year. Tune-ups are quick, affordable, and come with priority scheduling.

Not sure if it’s time for a new system? Check out the signs you need a new HVAC.

Spring/Summer AC Tune-Up:

  • Refrigerant level check and adjustment
  • Electrical connection inspection
  • Condenser coil cleaning
  • Performance optimization

Fall/Winter Heating Tune-Up:

  • Gas line and heat exchanger inspection
  • Ignition system testing
  • Airflow measurement and adjustment
  • Safety control verification

Why De Soto Chooses Charlie’s Air Conditioning & Heating

We’re not a faceless national chain. Charlie and Linda built this company from their home in 1982, and today our locally owned team continues to serve De Soto and the surrounding communities with dependable, no-nonsense HVAC service. Learn more about our story and why generations of Southern Illinois families trust us with their home comfort.

Additional Services Available in De Soto

Get a Free Estimate or Schedule Service in De Soto, IL

When you call Charlie’s Air Conditioning & Heating, you’re getting more than just another HVAC company—you’re choosing a team that values integrity, efficiency, and long-term relationships. Call us today at (618) 985-2502 or book online for heating and air conditioning in De Soto, IL.

Recent Jobs and Reviews

Rated 5.0 out of 5 stars based on 2407 customer reviews

Customers say: The overall sentiment across these reviews is overwhelmingly positive, reflecting high levels of customer satisfaction and trust. Customers consistently express appreciation for the professionalism, expertise, and courtesy demonstrated by the service technicians. Recurring themes include punctuality, with technicians arriving on time and completing work efficiently, as well as thoroughness in explaining services, issues, and maintenance recommendations in detail. Many reviewers emphasize the friendly and personable nature of the technicians, highlighting their patience in answering questions and their respectful treatment of customers' homes. There is a strong sense of reliability and trustworthiness, with multiple customers noting their long-term loyalty to the company and their eagerness to recommend the service to friends and neighbors. The technical knowledge and problem-solving abilities of the staff are frequently praised, with customers feeling confident that issues are properly diagnosed and resolved. Overall, the tone is enthusiastic and grateful, with customers expressing satisfaction not only with the quality of work but also with the exceptional customer service experience, including responsiveness for after-hours calls and the ability to address concerns promptly and effectively.

At a glance

Charlie's Air Conditioning & Heating has completed 25 jobs in October 2026.

The 15 customer reviews shown here average 5.0 out of 5.

The most recent job was on October 14, 2026.

Recent work covers Carterville, IL, Marion, IL, Carbondale, IL, Herrin, IL and De Soto, IL.

Job Locations and Reviews

Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance Checked wire connections. Replaced filters (customer provided). Flushed drain line. Thermostat was operating normally. Heat strips were operating normally. Contactor on heat strips may need replaced in the next year or 2. System was tested in AC mode due to warm outdoor temperature. Freon levels were within normal range. Everything else was clean and checked out well. System is operating normally at this time.
Herrin, IL 62948
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance HVAC Repair
Creal Springs, IL 62922
Daniel B.
Daniel B. Checked in
Inspect bathroom system
Goreville, IL 62939
Daniel B.
Daniel B. Checked in
Replace inducer motor, fix drain line, and test operation.
Goreville, IL 62939
Daniel B.
Daniel B. Checked in
Heating Maintenance PCSA 2026 heating check up prepaid Checked wire connections. Replaced filters. Heat strips were operating normally. Thermostat was operating normally. System was tested in AC mode due to warm outdoor temperatures. Puron levels appear normal. Outdoor coil needs cleaned when possible. Water faucet outside didn’t appear to work. Need to coordinate with maintenance to figure out when and how we can clean it. Everything else was clean and checked out well. System is operating normally at this time.
Carterville, IL 62918
Review
Excellent Service
Williamson - Carterville, IL 62918
Daniel B.
Daniel B. Checked in
Heating Maintenance PCSA 2026 heating check up prepaid Checked wire connections. Replaced filters. Flushed drain lines. Thermostats were operating normally. Burners were clean. Cleaned flame sensors. CO levels were within normal range. Blower motor transformer on the middle furnace is making a lot of noise. Need to order and replace when possible. Everything else was clean and checked out well. All systems are operating normally at this time.
Carterville, IL 62918
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance
Carterville, IL 62918
Daniel B.
Daniel B. Checked in
HVAC Service Carterville
Carterville, IL 62918
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance Checked wire connections. Replaced filter. Flushed drain line. Thermostat was operating normally. Burners were clean. Cleaned flame sensor. Temperature rise was within normal range. CO levels were within normal range. Everything was clean and checked out well. System is operating normally at this time.
Carterville, IL 62918
Daniel B.
Daniel B. Checked in
Indoor Coil froze HVAC Repair
Vienna, IL 62995
Daniel B.
Daniel B. Checked in
Cause of the issue was system was low on Puron. Need to schedule a leak search when possible. Recharged system with 2.5 lbs until we can return.
Vienna, IL 62995
Daniel B.
Daniel B. Checked in
Air Conditioning Repair Carterville
Carterville, IL 62918
Daniel B.
Daniel B. Checked in
2026 Fall PM
Carterville, IL 62918
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance Checked wire connections. Replaced filters. Thermostat had to be reprogrammed due to issue with the electric heat and heat pump working together. Heat strips were operating normally. Puron levels were within normal range. Defrost mode was operating normally. Contactor on outdoor coil was heavily worn. Replaced under warranty. Everything else was clean and checked out well. System is operating normally at this time.
Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 Fall Check Up PCSA Renew/Blower motor replacement
Murphysboro, IL 62966
Daniel B.
Daniel B. Checked in
2026 Fall Check Up Checked wire connections. Replaced filter. Heat strips were operating normally. Thermostat was operating normally. Puron levels were within normal range. Defrost mode was operating normally. Everything else was clean and checked out well. System is operating normally at this time.
Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance Checked wire connections. Replaced filters. Thermostats were operating normally. Installed ecobee in the guest house. Heat strips were operating normally. Systems were tested in AC mode due to warm outdoor temperatures. Everything else was clean and checked out well. All systems are operating normally at this time.
Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Renewal Heating Maintenance Checked wire connections. Customer will replace filters in the near future. Recommend every 2 months if possible. Thermostat was operating normally. 3 of the 4 electric heaters are operational. Limit may need replaced in the future. System was tested in AC mode due to warm outdoor temperatures. Puron levels were within normal range. Cleaned outdoor coil as much as possible. Recommend customer tries to remove all excess grass, trees, and vines away from the outdoor coil. System is operating normally at this time.
De Soto, IL 62924
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance
Johnston City, IL 62951
Review
Daniel always provides excellent service. He is timely, courteous, personable, and explains in detail any issues with our heat pumps.
Connie Heinle - Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Prepaid Heating Maintenance Blower motor was dead on east system. Replaced blower motor. Replaced filters. Checked wire connections. Thermostats were operating normally. Heat strips were operating normally. Puron levels were within normal range. Defrost mode was operating normally. Capacitor for west heat pump was getting weak. Replaced under warranty. Everything else was clean and checked out well. Both systems are operating normally at this time.
Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Renewal Heating Maintenance Checked wire connections. Replaced filter. Thermostat was operating normally. Heat strips were operating normally. Puron levels were within normal range. Defrost mode was operating normally. Cleaned outdoor coil. Everything was clean and checked out well. System is operating normally at this time.
Marion, IL 62959
Review
Awesome serviceman. He’s a keeper
Jim - Pittsburg, IL 62974
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Start Heating Maintenance
Pittsburg, IL 62974
Review
Daniel is always extremely polite and explains everything in detail.
Melanie - Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 Fall Check Up PCSA Renew Heating Check Up Marion
Marion, IL 62959
Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Renewal Heating Maintenance Checked wire connections. Replaced filters which were looking pretty dirty. Recommend customer has filters replaced again after the renovations are finished. Heat strips are operating normally. Thermostats were operating normally. Systems were tested in AC mode due to warmer outdoor temperatures. Puron levels were within normal range. Outdoor fan motor on downstairs heat pump is still operational but very worn. May need to replaced within the next year or 2. Everything else was clean and checked out well. Systems are operating normally at this time.
Carbondale, IL 62902
Daniel B.
Daniel B. Checked in
Ran new thermostat wire, install new ecobee thermostat, and checked system operation for the loft. System is operating normally at this time.
Carterville, IL 62918
Review
Excellent from everyone involved
Denise - Elkville, IL 62932
Review
Daniel knows his stuff (as I had already done previous research on AI). Daniel is extremely patient and will take the time and explain anything no matter how long it will take to explain it. Great customer service!!!
Jenny - Carterville, IL 62918
Review
Excellent service after hours
Travis - Carbondale, IL 62901
Review
The service was professional, prompt, and courteous. Highly recommend!
Paul - Marion, IL 62959
Review
Daniel has always given up exceptional service.
Sandy - Buncombe, IL 62912
Review
Semi annual maintenance
Kathy - Carbondale, IL 62902
Review
5 *****
Dailey - Johnston City, IL 62951
Review
Always Excellent Service
Chipc73 - De Soto, IL 62924
Review
Charlie’s service was 5 star and very responsive and helpful. Pete the service technician was prompt and arrived on time and provided excellent service
Morgan - Herrin, IL 62948
Review
Above and beyond expectations!
West - Herrin, IL 62948
Review
Quick
Brothers - Carterville, IL 62918

Recent Jobs and Reviews in De Soto, IL

Rated 5.0 out of 5 stars based on 72 customer reviews

Customers say: The overall sentiment across these reviews is overwhelmingly positive, reflecting high levels of customer satisfaction and trust. Customers consistently express appreciation for the professionalism, expertise, and courtesy demonstrated by the service technicians. Recurring themes include punctuality, with technicians arriving on time and completing work efficiently, as well as thoroughness in explaining services, issues, and maintenance recommendations in detail. Many reviewers emphasize the friendly and personable nature of the technicians, highlighting their patience in answering questions and their respectful treatment of customers' homes. There is a strong sense of reliability and trustworthiness, with multiple customers noting their long-term loyalty to the company and their eagerness to recommend the service to friends and neighbors. The technical knowledge and problem-solving abilities of the staff are frequently praised, with customers feeling confident that issues are properly diagnosed and resolved. Overall, the tone is enthusiastic and grateful, with customers expressing satisfaction not only with the quality of work but also with the exceptional customer service experience, including responsiveness for after-hours calls and the ability to address concerns promptly and effectively.

De Soto, IL at a glance

Charlie's Air Conditioning & Heating has completed 25 jobs in De Soto, IL between February 2026 and October 2026.

The 25 customer reviews shown here average 5.0 out of 5.

The most recent job was on October 7, 2026.

Charlie's Air Conditioning & Heating has completed 41 jobs in De Soto, IL in the last 12 months. The first job there was in July 2020.

Our Local Reviews by City

Job Locations and Reviews

Daniel B.
Daniel B. Checked in
2026 PCSA Heating Check Up Renewal Heating Maintenance Checked wire connections. Customer will replace filters in the near future. Recommend every 2 months if possible. Thermostat was operating normally. 3 of the 4 electric heaters are operational. Limit may need replaced in the future. System was tested in AC mode due to warm outdoor temperatures. Puron levels were within normal range. Cleaned outdoor coil as much as possible. Recommend customer tries to remove all excess grass, trees, and vines away from the outdoor coil. System is operating normally at this time.
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Renewal AC Maintenance Air Conditioning Repair
De Soto, IL 62924
Review
Always Excellent Service
Chipc73 - De Soto, IL 62924
Daniel B.
Daniel B. Checked in
2026 PCSA AC Check Up Prepaid AC Maintenance Checked wire connections. Replaced filter. Flushed drain lines. Thermostat was operating normally. Puron levels were within normal range. Cleaned outdoor coil. Contactor on outdoor coil was looking very worn. Replaced under warranty. Everything else was clean and checked out well. System is operating normally at this time.
De Soto, IL 62924
Daniel B.
Daniel B. Checked in
No AC
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Renewal AC Maintenance Air Conditioning Repair
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Renewal AC Maintenance Started run check by checking wire connections. Made sure thermostat is operating normally. Customer replaces the filters. Cleaned drain line and outdoor unit. Checked Freon levels. System is operational run check is complete.
De Soto, IL 62924
Review
service call
Jones - De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Free W. New Install AC Maintenance Started run check by checking wire connections. Customer replaces the filters. Clean drain line and outdoor unit. Checked Freon levels. Run check is complete.
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Prepaid AC Maintenance Start a run check by checking wire connections. Replace the filter with one of customers filters. Clean drain line and outdoor unit. Checked Freon levels. System is operational run check is complete.
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Prepaid AC Maintenance
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Renewal AC Maintenance Air Conditioning Repair
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Renewal AC Maintenance Start a run check by checking wire connections. Made sure thermostat is operating normally. Customer replaces the filters. Clean drain line and outdoor unit. Check Freon levels. Customer stated that the farthest east room is warmer than the rest of the house. Technician check the airflow and the room has good airflow and TD. Keep an eye on for future check ups.
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Prepaid AC Maintenance Air Conditioning Repair DeSoto
De Soto, IL 62924
Daniel B.
Daniel B. Checked in
Water in floor
De Soto, IL 62924
Daniel B.
Daniel B. Checked in
AC Maintenance Checked wire connections. Replaced filters. Flushed drain lines. Thermostats were operating normally. Freon levels were within normal range. Cleaned outdoor coils. Capacitor for the upstairs compressor was getting weak. Replaced capacitor. Everything else was clean and checked out well. All systems are operating normally at this time.
De Soto, IL 62924
Review
Real Good
Drew - De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Prepaid AC Maintenance Air Conditioning Repair
De Soto, IL 62924
Daniel B.
Daniel B. Checked in
2026 PCSA AC Check Up Renewal AC Maintenance Checked wire connections. Replaced filter (customer provided). Flushed drain lines. Freon levels were within normal range. Cleaned outdoor coil. Contactor on outdoor coil is heavily worn. Recommend replacing during a future check up. Everything else was clean and checked out well. System is operating normally at this time.
De Soto, IL 62924
Daniel B.
Daniel B. Checked in
AC Maintenance PCSA 2026 a/c check up renewal Checked wire connections. Replaced filter. Flushed drain line. Thermostat was operating normally. Puron levels were within normal range. Cleaned outdoor coil. Contactor on outdoor coil was looking very worn. Replaced under warranty (parts warranty only). Everything else was clean and checked out well. System is operating normally at this time.
De Soto, IL 62924
Review
Excellent Service
Chavez - De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 PCSA AC Check Up Prepaid AC Maintenance Air Conditioning Repair
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 AC Check Up Free W. New Install AC Maintenance Air Conditioning Repair Desoto
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2026 AC Check Up Renewal AC Maintenance Technician check wire connections. Made sure the thermostat is operating normally. Customer replaces the filters. Clean drain line and outdoor unit. Checked Freon levels. run check is complete.
De Soto, IL 62924
Review
Both super nice guys!! Got the job done quick and great price!! Will recommend. Thank you again!!
Jessica - De Soto, IL 62924
Daniel B.
Daniel B. Checked in
Complaint no cool
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2025 PCSA Heating Check Up Free W. New Install Heating Maintenance Heating Repair De Soto
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
Heating Maintenance De Soto Technician checked wire connections. Made sure thermostat is operating normal. Replace the filter. Checked electric heaters. Checked Freon levels and defrost.
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
2025 PCSA Heating Check Up Prepaid Heating Maintenance HVAC Repair De Soto
De Soto, IL 62924
Jakob E.
Jakob E. Checked in
Technician to replace the filter. HVAC Service
De Soto, IL 62924
Review
Excellent service
Bill - De Soto, IL 62924
Review
Great service
Hertz - De Soto, IL 62924
Review
Excellent service
Jones - De Soto, IL 62924
Review
I’ve been with Charlie’s for years and will not use anyone else
Tammy - De Soto, IL 62924
Review
Serviceman was friendly and on time. He worked very quickly and got the job done. He was very knowledgeable.
Larry - De Soto, IL 62924
Review
My air was not working when I got home and I called at 9:30pm to see if I could get someone out. Daniel was there by 10:30 and got it fixed right up. He was great and I’m so thankful for not having to go the night with my house being 90 degrees.
Sarah - De Soto, IL 62924
Review
Great service and very professional.
Chavez - De Soto, IL 62924
Review
Great Service!
Galloway - De Soto, IL 62924
Review
I was so grateful that you moved my appointment from Tuesday to Monday when you discovered I had no air conditioning. As always the service I receive from your company is excellent and you have the friendly servicemen. They are kind and considerate and very knowledgeable in their work.
Jones - De Soto, IL 62924
Review
Gerson C., my service technician, was on time, very friendly and informative, went above & beyond what was expected, and answered all my questions. Would be glad to have him again if needed.
Larry - De Soto, IL 62924
Response from Charlie's Air Conditioning & Heating:

Thank you so much for being a customer! Call us any time!

Review
Excellent service and very friendly
Mike - De Soto, IL 62924
Review
Excellant Service
Crow - De Soto, IL 62924
Review
Fast, professional, excellent service always!
Kevin - De Soto, IL 62924
Review
Couldn't ask for more. Been a satisfied customer for almost 20 years.
CC - De Soto, IL 62924
Response from Charlie's Air Conditioning & Heating:

Thank you for being a customer!

Review
Thorough, professional, friendly service as always!
Kevin - De Soto, IL 62924
Review
Great
Scott - De Soto, IL 62924
Review
Excellent service!
Bill - De Soto, IL 62924
Review
He was awesome 👏 A plus for me thanks
Jeff - De Soto, IL 62924
Review
Excellent
Sarah - De Soto, IL 62924
Response from Charlie's Air Conditioning & Heating:

Thank you for your business!

Review
Great experience and Justin was the epitome of customer service!
Mary - De Soto, IL 62924
Response from Charlie's Air Conditioning & Heating:

Thank you, Mary! Our guys are the best! We appreciate your business.

Five Star Service. Five Reviews.

Read Reviews
Badge Since 1982 Charlies Heat And Air