You rely on heating and cooling systems every day to keep your property comfortable. When either of these systems fails, it could lead to serious problems. Look to A+ Derr Heating & Cooling for HVAC services of all kinds.
Our team of expert technicians can diagnose and resolve any problem with your heater or air conditioner. We even offer indoor air quality services, installing purifiers, cleaners, and other systems to ensure the best air possible.
Treat your HVAC system right by hiring the best in Carmi for service. Talk to A+ Derr online or call (877) 914-1764 to schedule HVAC services at your Carmi-area home.
Trusted Air Conditioning
Staying cool in the summer can be hard in Illinois. Our area gets plenty of heat waves, and you need a good AC to keep up. Rely on A+ Derr for the AC services you need most. We offer:
- AC Installation:Â We can remove your old AC and install a new, energy-efficient model that could last for 10 to 15 years or longer.
- AC Repair:Â Our team can inspect your system, determine the cause of your troubles, and repair the unit correctly.
- AC Maintenance:Â We can perform annual tune-ups on your air conditioner to catch small problems before they become something more.
- Ductless HVAC Services:Â Our team also provides repairs, installations, and maintenance for single-room, wall-mounted ductless mini-splits.
Enjoy cool air whenever you need it. Call (877) 914-1764 or contact us online to schedule air conditioner services in Carmi.
Reliable Heating
The winter in Carmi can hit hard with cold temperatures and heavy snow. Make sure your home is ready with a top-tier heating system. We work on all models of furnaces, geothermal units, ductless mini-splits, and heat pumps. Look to A+ Derr when you need:
- Heating Installation:Â We can remove your old heating unit when it no longer works, replacing it with a brand-new furnace, heat pump, or boiler.
- Heating Repair:Â Our team can discuss your heating issue and find the root cause of it, then perform the needed repairs.
- Heating Maintenance:Â We can provide annual maintenance services for your heater so you have peace of mind that your system is running well.
24/7 Emergency Service (833) 232-4328 Schedule Service Schedule Service
Indoor Air Quality Solutions
Breathing clean air should be a high priority for any homeowner. Look to A+ Derr for comprehensive indoor air quality services. We install and repair humidifiers, dehumidifiers, and air purifiers to keep your air clean. We also clean air ducts to ensure your HVAC system delivers the cleanest air.To schedule an IAQ appointment in Carmi, IL, depend on A+ Derr. Call (877) 914-1764 today.
Why Choose A+ Derr?
For nearly 50 years, A+ Derr has provided exceptional HVAC services in Carmi and beyond. Our fourth-generation family-operated business treats every client just like our own. We offer free estimates, Lennox-brand units, financing options, specials, and more. We guarantee your satisfaction, too — if you’re not happy with a product we installed after one year, we’ll buy it back!For nearly 50 years, A+ Derr has provided exceptional HVAC services in Carmi and beyond. Our fourth-generation family-operated business treats every client just like our own. We offer free estimates, Lennox-brand units, financing options, specials, and more. We guarantee your satisfaction, too — if you’re not happy with a product we installed after one year, we’ll buy it back!Trust your HVAC system to the capable technicians at A+ Derr. Contact us online or call (877) 914-1764 to schedule HVAC services in Carmi.
FAQs
Are whole-home humidifiers worth it?
Whole-home humidifiers can be a valuable addition for certain homeowners. If you deal with a lot of static electricity or find yourself feeling dry, these systems can be worth a look.
Why is my furnace making a banging sound?
Furnaces may make banging sounds for several reasons. Typically, this is a sign that a part in the system is loose, such as a fan blade or heating element. Proper repair can resolve the issue.
How long does it take to replace a central AC system?
A central air conditioning system can be replaced in a single day over a few hours. Our team can remove the old unit and install a new one, ensuring you have a proper cooling system in as little as one day.
Recent Jobs and Reviews in Carmi, IL
Job Locations and Reviews
Conducted comprehensive replacement estimate for residential central air conditioning system with failed compressor. Evaluated existing outdoor condenser unit positioned on concrete pad with electrical connections and assessed interior air return system including ceiling-mounted filter grille. Documented equipment condition, measured installation areas, reviewed ductwork accessibility, and provided complete replacement options for aging HVAC system that ceased operation due to locked compressor.
Completed comprehensive replacement estimate for residential HVAC system that has been non-operational for approximately one year. Assessed existing furnace and ductwork configuration in basement mechanical room, documenting current equipment condition including dark gray furnace unit with metal supply ductwork, electrical connections, and surrounding insulated enclosure. Evaluated replacement options and financing solutions for complete system installation to restore climate control functionality, as property currently relies on temporary window unit cooling.
Conducted comprehensive HVAC system replacement estimate for property currently relying on window units. Assessment included evaluation of unfinished basement space with exposed infrastructure and crawl space conditions, identifying need for complete ductwork installation in addition to new air conditioning system. Documented existing conditions including moisture concerns evidenced by dehumidifier presence in basement, aged plumbing infrastructure with corrosion, and structural considerations for new duct routing through exposed joists and support beams. Provided detailed replacement specifications for full HVAC system installation including proper duct design to serve all conditioned spaces.
Conducted comprehensive assessment of existing 20-year-old HVAC system for complete replacement estimate. Evaluated current heating and cooling equipment located in interior closet serving 1001-1599 square foot residential space. Inspected existing ductwork infrastructure and interior components, documenting current system configuration with electric heat pump setup. Reviewed closet-mounted unit accessibility and evaluated replacement requirements for both air conditioning and heating systems. Provided detailed replacement options and discussed financing solutions for new dual-system installation.
Completed day two of a full HVAC system installation featuring a 4-ton, 15.5 SEER air conditioning unit paired with an 80% efficiency furnace. Installed flexible ductwork throughout the attic space, routed between structural joists and rafters, ensuring proper airflow distribution to all living areas. Mounted new supply register with horizontal louvers in the ceiling, integrated with existing beadboard paneling and trim work to maintain the home's interior aesthetic.
Completed HVAC installation with exterior heat pump condenser unit positioned on gravel pad alongside building. Installed refrigerant line set, electrical conduit, and associated piping connections from outdoor unit through exterior wall, ensuring proper routing and secure mounting of all mechanical components.
Responded to a no-cool service call on a 10+ year old residential HVAC system that had been non-operational since the previous summer. Upon arrival, performed comprehensive diagnostic evaluation of the outdoor condenser unit and indoor air handler. System showed signs of age with visible corrosion on fan guard and previous repair attempts including motor and capacitor replacement. Diagnosed primary failure points preventing system operation and lack of airflow through vents. Completed necessary repairs to restore cooling functionality to the unit.
Completed comprehensive HVAC system evaluation for 1,250 square foot residential property requiring cooling system replacement. Assessed existing outdoor condenser unit showing significant weathering, paint deterioration, and operational decline, with heating system remaining functional. Provided estimate for A+ rated energy-efficient replacement equipment suitable for property square footage, including options for complete system replacement versus cooling-only upgrade to maximize efficiency and long-term value.
Performed comprehensive HVAC system replacement estimate for attic-mounted unit experiencing heating failure since March and inadequate cooling performance with 2-degree temperature differential. Assessed existing refrigerant line set routed along exterior concrete block wall showing signs of weathering and age. Evaluated attic access point through drop ceiling and documented current system configuration to provide complete replacement options for failed heating and cooling equipment.
Completed comprehensive HVAC replacement estimate for residential property equipped with outdoor package unit showing significant weathering, surface corrosion, mineral deposits, and algae growth indicating extended service life and moisture exposure. Documented existing system condition including deteriorated cabinet surfaces, water staining, and biological growth at wall interface points. Provided detailed assessment and replacement recommendations for aging equipment positioned on ground-level gravel pad adjacent to brick foundation.
Performed scheduled single maintenance on relatively new HVAC system (6 months old). Inspected outdoor condenser unit, electrical connections, and condensate drain system with PVC piping. Replaced air filters and verified proper system operation during this first annual maintenance visit.
Completed semi-annual CFI maintenance (first visit of the year). Performed temperature differential testing using digital thermometer, with readings showing 62°F at supply vent. All equipment operating within normal parameters during inspection.
Performed scheduled 6-month maintenance on HVAC system with 16x25x5 filter replacement. Inspected filter housing unit and air handling equipment for proper operation. Verified thermostat functionality, confirming all system controls and smart features were operating correctly.
