FLETCHER, N.C. (828newsNOW) — As spring gives way to summer in Western North Carolina, many homeowners start watching the thermostat and the power bill a little more closely.

Sometimes, an air conditioning system is working harder and driving up your energy bill because of hidden problems inside the home, in the ductwork or within the system itself.

All Seasons Heating & Air Conditioning, based in Fletcher, serves homeowners across Western North Carolina with HVAC repair, maintenance, installation and replacement. The company says small issues can affect comfort and efficiency long before an air conditioning system stops working.

Here are some common AC problems that can raise summer energy costs.

A dirty air filter can restrict airflow

One of the simplest problems can impact your comfort. A dirty or clogged air filter restricts airflow, which can make an air conditioning system work harder to move cool air through the home. Over time, that can affect efficiency and the life of the system. Changing the filter is one of the easiest first steps to offset the issue before summer cooling season begins.

Leaky ductwork can waste cooled air

If cooled air escapes into an attic or unfinished area before it reaches the rooms where people live, the system has to keep running to make up the difference. That can increase energy use and leave some rooms too warm. For Western North Carolina homes with additions or older ductwork, duct leaks or airflow problems may be part of the issue. Homeowners should make sure vents are open and never blocked by curtains, rugs, or furniture. If airflow still feels weak, an HVAC technician can check for problems inside the ductwork or system.

Dirty coils can make cooling less efficient

Air conditioners rely on coils to move heat out of the home. When those coils become dirty, the system may have a harder time cooling the air. That can lead to longer run times, uneven cooling and added strain on equipment. Homeowners may not notice the problem until the AC struggles to keep up during hot weather.

Thermostat habits can quietly raise costs

A properly used thermostat can help manage energy use. Frequent large adjustments, setting the temperature lower than needed or leaving the system running at the same setting when no one is home can increase cooling costs. A programmable or smart thermostat can help.

An aging system may be losing efficiency

Older air conditioning systems can operate but not run efficiently. If an AC system needs frequent repairs, or causes noticeable increases in energy bills, it may be time to repair or replace the system.

All Seasons Heating & Air Conditioning provides AC repair, maintenance, installation and replacement, as well as heat pumps, ductless systems, ductwork, indoor air quality solutions, furnaces and boilers.

To request service or learn more, visit All Seasons Heating & Air Conditioning online or call 828-651-9998.