Air conditioning and heating systems are designed to work in the background to make your home comfortable. Unfortunately, when something goes wrong, the unit might make unnecessary and unwanted noises that can distract from daily life. The following guide outlines a few of the reasons why your AC is making strange sounds and how a professional can help.

Why Is Your AC Making Those Noises?

1. Loose Components

Air conditioning components are held together with bolts, screws, and clips. If the unit was installed improperly or a fastener falls loose, you might hear rattling or clanking as the system runs. 

An HVAC contractor can listen to the sound and locate the loose piece. They’ll disassemble the unit safely, secure the component, and ensure the appliance is configured correctly to avoid future issues.

2. Dirty Outdoor Fan Box

If you have trees or landscaping around the outdoor AC unit, organic debris like leaves or twigs could fall into the fan. You might hear a constant thumping sound as the mechanism hits the intruding components. This problem can also limit airflow, making the system less efficient.

Trim any landscaping features around the outdoor unit, and use weed killer to eliminate vegetation from the area. At the end of the season, have an HVAC contractor clean the outdoor condenser to remove dirt and grime, and sprinkle a pre-emergent herbicide in the area to prevent new weeds from growing. 

3. Duct Problems

Central HVAC systems deliver processed air through the ducts located behind walls and under the floor. When the air travels through a vent, its temperature can expand or contract the metal and create a popping noise.

While these occasional pops can be ignored, ongoing rattling or whistling noises could indicate vent gaps that allow air to escape. Vents can also create noise if objects, food, or pests make their way inside. Vacuum these areas regularly, and have the ducts professionally cleaned if you notice grime inside the air registers. 

If you’re concerned about the health of your air conditioning system, turn to Custom Heating & Cooling in Mountain Home, AR, for a thorough inspection. For 33 years, this trusted team of HVAC experts has helped residents create comfortable, safe interiors with consistent temperatures and clean air. They also offer geothermal products that are completely noiseless and don’t need an outdoor unit. Find out more by visiting their website or calling (870) 425-9498.