Chandler HVAC Services Contractor

The Most Common HVAC Problems

Many HVAC issues around the home can be fixed by simply cleaning the coils or replacing filters. Basic maintenance can go a long way in preventing breakdowns and emergency repairs. Here are a few HVAC issues to be on the lookout for — and how to fix them.

  1. Pilot or ignition issues

Problems with ignition can be caused by a dirty pilot, flame sensor, or burner, which can then lead to a pilot outage, short cycling, furnace lockout, or delayed ignition. The cause could also be an issue with gas supply, or wear and tear of an ignition component, such as a hot surface ignitor or thermocouple. Because repairs involve handling natural gas and high voltage, homeowners should call Tucker Hill for professional service.

  1. Malfunctioning thermostat

Problems with the thermostat can often be fixed by referring to the owner’s manual. Simply replacing the batteries or resetting the system can help get things back to normal. If taking these simple steps doesn’t fix the thermostat, then it’s time to schedule service.

  1. Mechanical wear and tear

Wear and tear on belts and bearings may lead to overheating, poor heating, or airflow issues. Keeping up with routine maintenance can help identify worn out parts before the system breaks down.

  1. Unusual furnace noises

If the furnace starts whining, squealing, or making other unusual noises, the cause could be failing bearings in an inducer motor or blower motor. Other causes may include airflow issues or dirty burners. 

It’s important to address these signs as soon as possible to avoid a more serious problem that could lead to furnace failure.

  1. Blown fuses or tripped breakers

If the blower is being overworked, the furnace can trip a circuit breaker. The cause can be blocked airflow if the filter is dirty. Clogged filters increase the blower’s energy consumption and can trip a circuit breaker. Regularly replacing the air filter can help prevent blown fuses or tripped breakers and maintain the system’s energy efficiency.

  1. Continuously running blower

A motor may run continuously if the thermostat is set to the fan mode. Simply switching off the fan mode can help bring things back to normal.

  1. Water leaks

A furnace may leak if the drain lines are clogged or cracked. Homeowners can pour bleach to clean the drain lines. Other potential sources of the leak include the collector box, heat exchanger, or evaporator drain pan.