Over the last fifty years, summers have warmed up by approximately two and half degrees in 97% of 242 U.S. cities, according to a data set from Climate Central. Warm summer temperatures create an increased demand on your AC system and often reveal underlying issues or cause new ones.
Understanding some common air conditioning problems and knowing when to tackle them yourself versus calling a professional can save you time, money, and frustration during the summer.
Clogged or Dirty Air Filters
One of the most frequent culprits behind poor AC performance is a dirty air filter. When filters become clogged with dust, pet hair, and debris, airflow becomes restricted, forcing your system to work harder and less efficiently. This can lead to higher energy bills, poor cooling performance, and potential system damage.
You can easily check and replace standard filters yourself monthly during peak usage. However, if you have a high-efficiency filtration system or notice persistent airflow issues after replacing filters, it’s time to call a professional to inspect your ductwork and system components.
Refrigerant Leaks
Low refrigerant levels often manifest as inadequate cooling, ice formation on the unit, or hissing sounds near the outdoor condenser. Unlike a simple filter change, refrigerant issues require professional attention.
If you suspect a refrigerant leak, turn off your system immediately and contact a licensed HVAC technician. They can locate the leak, repair it properly, and recharge your system with the correct amount of refrigerant.
Electrical Component Failures
Summer heat puts tremendous stress on electrical components, leading to capacitor failures, worn contactors, and faulty wiring connections. Signs include the outdoor unit not starting, unusual clicking or humming sounds, or frequent tripping of circuit breakers.
While you can check that your thermostat has fresh batteries and make sure circuit breakers haven’t tripped, any other electrical work should be left to professionals.
Frozen Evaporator Coils
Believe it or not, air conditioners can freeze up even in scorching weather. This typically occurs due to restricted airflow, low refrigerant levels, or dirty coils. If you notice ice on your indoor or outdoor unit, turn off the system immediately and allow it to thaw completely.
Once thawed, check and replace the air filter. If the problem persists or returns quickly, professional service is necessary to identify and address the root cause.
Drainage Problems
Air conditioners remove humidity from indoor air, creating condensation that should drain away properly. However, if you have clogged drain lines, they can cause water backup, leading to water damage, mold growth, and system shutdown.
While you might clear minor clogs with a wet vacuum, persistent drainage issues often require professional cleaning of the entire drain system and inspection for underlying problems.
Making the Right Call
When facing air conditioning problems, start with simple checks like filters and thermostat settings. However, don’t hesitate to call professionals for electrical issues, refrigerant problems, or recurring concerns. Prompt professional service can prevent minor issues from becoming major, expensive repairs.
If you have any questions or concerns about your AC unit, please get in touch.