Troubleshooting Common HVAC Problems: DIY Fixes vs. Professional Help

Man on the phone with an HVAC technician as he explains a problem with his mini split HVAC unit

When your HVAC system acts up, it can be tempting to strap on a toolbelt and dive into the problem yourself. With the internet overflowing with tutorials, it might seem like a cost-effective and satisfying way to tackle issues. However, HVAC systems are complex, and no one should tinker with them without having a clue of what they’re doing. While some problems can be resolved with a bit of elbow grease, others require the expertise of a professional technician. By familiarizing yourself with common HVAC problems, you can make informed decisions about whether a simple fix is within reach or if it’s time to seek professional help.

Simple HVAC Problems You Can Troubleshoot Yourself

Is the air coming from your vents weak, smell musty, or not at the perfect temperature? You just may be able to fix these problems yourself! Here are some of our top tips for troubleshooting common HVAC problems yourself:

Dirty or Clogged Filters

One of the most common heating and cooling problems is a dirty filter. Over time, filters can become clogged with dust, dirt, and debris, reducing airflow and affecting indoor air quality. This can lead to increased energy consumption and higher energy bills, in addition to funky odors.

DIY Fix: Check your HVAC filters monthly and replace them every 1-3 months, depending on your usage and the type of filter. This simple maintenance task can significantly improve your system’s efficiency and indoor air quality.

Thermostat Issues

If your HVAC unit isn’t responding or maintaining the correct temperature, the thermostat might be the culprit. Sometimes, the problem is as simple as dead batteries or incorrect settings.

DIY Fix: Replace the thermostat batteries and check the settings. Ensure it’s set to the correct mode (heating or cooling) and temperature. If the issue persists, you may need to recalibrate or replace the thermostat.

Tripped Circuit Breaker

An HVAC unit may stop working if a circuit breaker trips. Fortunately, this is a common HVAC problem that’s relatively easy to troubleshoot.

DIY Fix: Locate your electrical panel and check if any breakers have tripped. If you find one, reset it by turning it off and then back on. If the breaker trips again, it might indicate a more serious electrical issue that requires professional attention.

Blocked Vents and Registers

When you struggle to get your home to a comfortable temperature, the problem often lies with the placement of furniture and personal items. Blocked vents and registers can impede airflow and make it seem like your HVAC system isn’t working properly.

DIY Fix: Ensure that all vents and registers are open and unobstructed by furniture, drapes, or other objects.

Common HVAC Problems That Require Professional Help

If your HVAC issue can’t be resolved with the troubleshooting steps outlined above, it’s vital that you stop all work on the unit and call a certified HVAC technician right away. The experienced professionals will help you troubleshoot the following problems and provide safe repairs:

Refrigerant Leaks

Refrigerant is crucial for your HVAC system to cool your home. A refrigerant leak is a serious issue that can lead to reduced cooling efficiency and increased energy bills.

Call a Professional: Only trained technicians should handle refrigerant due to its potentially hazardous nature. A professional can locate the leak, repair it, and recharge your system with the correct amount of refrigerant.

Electrical Issues

HVAC systems have complex electrical connections. Problems such as faulty wiring, blown fuses, or malfunctioning capacitors can pose serious risks.

Call a Professional: Electrical issues should always be addressed by a professional to prevent further damage or potential safety hazards. A technician can safely inspect and repair electrical components, ensuring your system operates safely and efficiently.

Frozen Evaporator Coils

Frozen evaporator coils can prevent your HVAC system from cooling effectively. This issue often results from low refrigerant levels, poor airflow, or other underlying problems.

Call a Professional: If you notice ice buildup on your HVAC unit, it’s best to call a professional. A technician can identify the root cause, whether it’s a refrigerant leak, clogged filter, or another issue, and provide the necessary repairs.

Unusual Noises or Smells

Strange noises or unpleasant smells coming from your HVAC system can indicate a variety of issues, from mechanical problems to mold growth.

Call a Professional: Odd noises or smells coming from your heating and cooling system should never be ignored. A professional technician can diagnose the problem and prevent further damage.

Frequent Cycling

If your HVAC unit cycles on and off frequently, it could be due to several underlying issues, such as a malfunctioning thermostat or an oversized system.

Call a Professional: An expert can determine the root cause of frequent cycling and recommend appropriate repairs or adjustments.

Call H.J. Faust for Professional Troubleshooting Help

While some HVAC problems can be resolved with DIY troubleshooting, others require the expertise of a trained technician. Knowing when to call a professional can prevent further damage and ensure your system operates efficiently.

If you’re facing issues such as refrigerant leaks or electrical problems, don’t hesitate to contact H.J. Faust, Inc. Our team of experienced technicians provides comprehensive HVAC services, including AC repair and furnace repair in Kenosha, WI, and the surrounding areas. You can trust us to keep your home comfortable year-round without breaking the bank.

More To Explore

a new heat pump installed outside a home
Heating Systems

Is It Time for a New Heating System?

As much as we wish it were possible, our heating systems won’t last forever. Over time, even the most reliable units experience wear and tear