Common HVAC Problems and How To Troubleshoot Them

The air conditioning system is among the most important systems in a home as they provide cool air and comfort. Air conditioning repair or replacement may be necessary at certain times due to regular wear-and-tear or unexpected problems. Below are seven of the most common air conditioning issues and how you can troubleshoot them:

Malfunctioning Thermostats

A faulty thermostat may result in your air conditioning unit not cooling or heating properly. Confirm that the airflow settings are correct and the temperature control settings are accurate. You can resolve this issue by swapping out dead batteries or adjusting the settings. For precise temperature readings, follow your thermostat’s instructions, recalibrate to ten degrees warmer, and clean with a soft cloth.

Loud Noises

Loud HVAC noises like buzzing, popping, or clanking can have various causes. If your air conditioning unit makes strange noises, the most likely cause is an issue with the belt or fan motor. Buzzing can indicate a loose part or motor issues, while popping may be due to expanding ductwork. Clanking suggests a blower assembly problem. Check that all air filters are clean and clear of debris. If they need to be changed, do so according to manufacturer instructions. Tighten any loose parts or components on the air conditioning system. 

Leaking HVAC Units

When air conditioning units begin to leak, it may be due to a blocked drain line. To prevent overflowing drain pans, use a wet vacuum to remove standing water, then check for cracks and holes. Seal small cracks with water sealant, or replace the pan if necessary. Dirty air filters also cause leaks, so replace them every two to three months to reduce coolant buildup and damage. If there is a leak in the evaporator coil, then it must be repaired by an air conditioning repair technician.

Uneven Temperature Distribution

If air conditioning units are not providing even temperatures throughout a home, it is likely due to an issue with air ducts. Check that all air vents and registers are open and clear of obstructions. If some rooms feel cooler or warmer, check the ductwork for loose connections or dirt buildup, which can impede airflow. Inspect your air filters and replace them if necessary. Add airflow boosters and dampers to regulate air temperature and improve air distribution within a home.

Broken Fan Motors

If the fan motor is broken, your air conditioning units may suddenly stop working. Inspect to see if the air filters are clean and that any debris has been removed from the fan blades. Also, examine if the air conditioning unit’s wiring is correct and securely connected to its power source. If you suspect an electric issue call a certified air conditioning repair expert.

Inadequate Cooling Capacity

If your air conditioner is not generating enough cool air, inspect the blower assembly and evaporator coil to see if they need cleaning or replacements. Assess your air filters and replace them if faulty or blocked. Also, check for signs of damage in coils or fan blades and that all air ducts are securely connected to the air conditioning unit. 

Blown Fuse

 Blown fuses can cause your heating or cooling to stop working altogether. Overloaded circuit breakers automatically turn off, while blown fuses stop delivering power. A blown fuse occurs when too much electrical current flows through the circuit, causing the fuse to overheat and break. This can be caused by a variety of factors, such as a malfunctioning thermostat, dirty air filters, or faulty wiring. First, locate the blown fuse in your system. Then, turn off power to the unit before replacing the blown fuse with a new one that matches its amperage rating. Identify and address any underlying issues that may have caused the fuse to blow. Clean the air filters and repair faulty wiring to avoid recurrence. 

Air Conditioning Repair in a Nutshell

While you can address some HVAC problems, most air conditioning repairs can be complex and challenging, requiring professional attention. If you decide to take on an air conditioning repair project, follow all instructions and stay safe. By regularly maintaining HVAC air filters, coils, electric motors, air ducts, and fuses, they can operate more efficiently. Contact a certified technician if any issues arise or repairs are too complicated, .