You deserve the comfort of a climate-controlled home, and A+ Derr is here to ensure you get it. We handle every aspect of your indoor environment, from HVAC repairs and installations to indoor air quality services. We’re a fourth-generation company that’s brought comfort to Clarksville homes for over half a century. We offer the utmost quality, and our 100% satisfaction guarantee is our promise of quality.Experience comfort the A+ Derr way by calling our Clarksville team at (877) 914-1764 or contacting us online. 
Air Conditioning
Clarksville summers get hotter every year, so make sure your air conditioner can still cope with the next heatwave. We install some of the best air conditioning brands on the market, and our fleet understands each one intimately. We offer:
- Air conditioning repair:Â Our diagnostic knowledge allows us to get right to the core of the problem and affect a repair that truly lasts.
- Air conditioning replacement: We’ll make sure you understand your options so that you make an educated decision that fits your budget. An exceptional installation will affect you for the rest of your system’s life span, so we do the job with the utmost precision.
- Air conditioning maintenance: Our annual tune-ups will improve energy efficiency and extend your product’s life span.
- Ductless mini-split repairs, installations, and tune-ups: If your home can’t accommodate ductwork or you’re looking for more energy efficiency, a mini-split will serve you well.
Experience a cooler summer by calling A+ Derr in Clarksville at A+ Derr in Clarksville at (877) 914-1764 or contacting us online.
Heating
You’ll always enjoy a cozy winter with A+ Derr at your side. Our complete care program will keep your system at its best at every stage of its life. We work with all heating technologies, including heat pumps, boilers, and furnaces, whether you prefer geothermal, gas, or electric power. We offer:
- Heating repairs:Â When old age and lack of maintenance cause debilitating symptoms, our repair team will resolve them promptly. Call us if your system is slow to warm, blowing cool air, or emitting unusual scents or sounds.
- Heating replacement:Â If your system is racking up frequent repairs, it might be time for a replacement. We have experience with installations of all stripes, from electric furnaces to geothermal systems.
- Heating maintenance:Â Your heating system is expensive, so protect your investment with the most comprehensive service checklist in the business.
24/7 Emergency Service (833) 232-4328 Schedule Service Schedule Service
Indoor Air Quality Services in Clarksville
Your indoor environment exposes you to allergens, volatile inorganic compounds, and many other forms of pollution. Take control of your health with a holistic air quality strategy. We’ll assist with:
- Duct cleaning: Your ducts require cleaning every year. If you have allergies, it’s best to increase their regularity.
- Humidifiers:Â These systems act as moisturizing agents that can improve skin conditions and respiratory symptoms. They can even alleviate snoring.
- Dehumidifiers:Â Take control of mold and mildew during heat waves.
- Air purifiers:Â Restore your air to EPA standards with our installations and repairs.
Arrange an indoor air quality service with Clarksville’s A+ Derr branch at A+ Derr in Clarksville at (877) 914-1764.
Why Choose A+ Derr?
A + Derr is renowned for its responsive and exacting technician fleet. We excel at finding the perfect solution to your comfort problems. We go beyond cookie-cutter service by considering your unique needs and budget. That’s why our clients appreciate us as much as they do. We’re deeply involved in the Clarksville community because we truly care about you.Take your comfort to new heights by calling A+ Derr in Clarksville at (877) 914-1764 to schedule an appointment.
FAQs
How often should I get a furnace tune-up?
The average home needs a furnace tune-up once a year, but if you have an older model or experience a particularly cold winter, you should service that up to twice a year.Â
Why is my mini-split making a sputtering sound?
Most sputtering mini-splits have a clogged condensate pipe. Sputtering could also indicate a damaged sling fan. Your unit might also be placed at an uneven angle.
Recent Jobs and Reviews in Clarksville, IN
Job Locations and Reviews
Performed monthly maintenance on 20-year-old Gold Level HVAC system. Inspected gas furnace with proper flame pattern and combustion. Replaced air filter (10x30) as part of routine service. System operating efficiently; next service scheduled for 06/19/2025.
Responded to service call for main sewer line blockage. Located and excavated two access points in customer's yard, revealing a green cylindrical clean-out pipe. Inspection confirmed root intrusion in the main drain line. Successfully cleared the blockage using professional drain cleaning equipment, restoring proper flow to the sewer system.
Conducted comprehensive HVAC replacement estimate for residential property. Inspected electrical panel to evaluate system compatibility and load capacity. Examined existing air filtration system, noting significant dust accumulation and filter deterioration requiring immediate attention as part of the proposed system upgrade.
Conducted platinum level maintenance service on system. Performed pressure diagnostics using dual port manometer with readings of 36.6 on both ports. Replaced dirty air filter which showed significant dust accumulation in the pleated material.
Responded to emergency call for carbon monoxide alarm activation in residence with 4-year-old HVAC system. Conducted comprehensive gas leak detection using UEI digital analyzer, which recorded elevated CO readings of 62 PPM. Testing at supply registers confirmed gas distribution through the duct system. Located and repaired leak source, restored system to safe operating parameters, and verified normal CO levels before completing service.
Performed monthly maintenance on 4-year-old HVAC system (16"x25"x1" filter size) per Platinum Level service agreement. Conducted electrical diagnostics using DL-988 True RMS multimeter to verify proper voltage readings across components. Accessed system components using hex key tools while wearing appropriate PPE to complete the scheduled maintenance tasks.
Responded to no-heat call for 10+ year old system with no airflow. Diagnostic inspection revealed severely clogged air filters (both pleated carbon filter and standard mesh filter) restricting proper airflow. Replaced filters and performed system reset, restoring normal heating operation and proper airflow through vents.
Performed platinum level preventative maintenance on 6-month-old system. Completed electrical diagnostics showing voltage readings of 243V and 28V. Replaced 20x20x5 air filter during second scheduled maintenance visit. System is operating within normal parameters and is due for renewal.
Responded to service call for power outage affecting outlets in one room after customer connected 1500W space heater. Inspected main electrical panel and identified overloaded circuit. Restored power by resetting tripped breaker and performed load calculation to determine proper circuit requirements for back rooms.
