Darrin Wood Heating and Cooling

711 Prospect Avenue Springfield, IL 62704

(217) 789-0504

24/7 Emergency Service

Your HVAC system plays a vital role in keeping your home comfortable year-round. However, like any complex system, it’s prone to occasional issues that can disrupt its performance. In this blog post, we’ll explore the seven most common HVAC problems homeowners encounter and provide tips on how to diagnose them.

While some issues can be addressed with DIY solutions, others require the expertise of a professional HVAC technician. Read on to learn more about troubleshooting your HVAC system and when to seek professional help.


7 Most Common Heating & Air Conditioning Issues + How to Diagnose Them

1. Air Filter Problems

Symptoms: Reduced airflow, poor indoor air quality, increased energy bills.

Diagnosis: Check the air filter for dirt, dust, or debris buildup. If it’s dirty, replace it with a new one according to the manufacturer’s recommendations.


2. Thermostat Malfunctions

Symptoms: Inaccurate temperature readings, unresponsive controls.

Diagnosis: Check the thermostat settings and replace the batteries if necessary. Ensure that the thermostat is level and free of dust or debris. If the issue persists, consider recalibrating or replacing the thermostat.


3. Refrigerant Leaks

Symptoms: Warm air blowing from vents, ice buildup on refrigerant lines, hissing noises.

Diagnosis: Inspect the refrigerant lines for signs of leaks or damage. If you suspect a leak, contact a professional HVAC technician immediately, as handling refrigerant requires specialized training and equipment.


4. Electrical Issues

Symptoms: Tripped circuit breakers, blown fuses, intermittent power supply.

Diagnosis: Check the electrical connections and components, such as the circuit breaker, fuse box, and wiring, for signs of damage or overheating. If you’re unsure or uncomfortable working with electricity, it’s best to leave the repairs to a qualified electrician.


5. Clogged Drain Lines

Symptoms: Water leaks around the indoor unit, musty odors, high humidity levels.

Diagnosis: Inspect the condensate drain line for clogs or blockages. Clear any debris using a wet/dry vacuum or a pipe cleaner. To prevent future clogs, consider installing a drain line cleaning device or scheduling regular maintenance with a professional technician.


6. Dirty Coils

Symptoms: Reduced cooling/heating efficiency, frost buildup on coils, increased energy consumption.

Diagnosis: Inspect the evaporator and condenser coils for dirt, dust, or debris accumulation. Clean the coils using a soft brush or a commercial coil cleaner. For more thorough cleaning, consider scheduling a professional maintenance service.


7. Mechanical Wear and Tear

Symptoms: Unusual noises (e.g., banging, grinding), uneven heating/cooling, frequent cycling.

Diagnosis: Inspect the blower motor, fan blades, bearings, and other mechanical components for signs of wear or damage. Lubricate moving parts as needed and tighten loose screws or bolts. If the issue persists, consult a professional technician for further diagnosis and repairs.


When to Call a Professional

While many HVAC issues can be tackled with DIY troubleshooting, there are times when it’s best to leave the job to the professionals. Here’s why reaching out to our team can be your best move:


hvac maintenance


  • Expertise and Experience: Our HVAC technicians are highly trained and experienced in diagnosing and repairing a wide range of system issues. By entrusting us with your HVAC problems, you can rest assured knowing that your system is in capable hands.
  • Time and Convenience: DIY troubleshooting can be time-consuming and frustrating, especially if you’re unsure of the problem or how to fix it. By calling us for help, you can save yourself valuable time and hassle, allowing you to get back to enjoying a comfortable home environment sooner.
  • Warranty Protection: Attempting DIY repairs on your HVAC system could potentially void any existing warranties. By relying on our professional services, you can ensure that your warranty remains intact while receiving top-quality repairs and service.
  • Comprehensive Solutions: Some HVAC issues may require specialized tools, equipment, or technical knowledge to resolve effectively. Our team has access to the latest diagnostic tools and technologies, allowing us to pinpoint problems quickly and provide comprehensive solutions tailored to your needs.
  • Peace of Mind: Dealing with HVAC issues can be stressful, especially if you’re unsure of the best course of action. By calling us for help, you can enjoy peace of mind knowing that your HVAC system is in the hands of skilled professionals who are dedicated to delivering reliable, efficient solutions.


Don’t let HVAC problems disrupt your comfort and peace of mind!


Contact us today and experience the difference that professional service can make.


Your satisfaction and comfort are our top priorities, and we’re here to ensure that your HVAC system operates smoothly and efficiently year-round.