During normal operation, the HVAC system in your Lorain County home makes some sounds that you’ve probably gotten used to. However, some unfamiliar noises could signify problems. Is the sound that your HVAC system is currently producing normal — or a cry for help? Let’s take a look at some HVAC sounds you may hear and what they mean.
Humming
A well-maintained HVAC unit will produce a soft hum when it comes on. A loud humming noise may indicate a loose component, such as the refrigerant piping or wire. Your motor may have an issue if the compressor makes a humming noise and doesn’t start.
Clicking
Your HVAC system will produce clicking sounds when you turn it on and off. Frequent clicking, however, could be a sign of a faulty contactor or a malfunctioning ignition system.
Rattling
Rattling usually indicates loose or broken components. Common causes include:
- Loose screws
- A cracked heat exchanger
- Misaligned blower
- Failing motor bearings
- A worn-out A/C compressor clutch
Booming or Banging
Loud banging or booming could be due to gas buildup within your heating system that explodes after ignition. These HVAC sounds could also point to something that’s come loose, broken, or disconnected. At times, extreme temperatures could make your ductwork expand or contract, producing these sounds.
Screeching
A dry blower motor may cause screeching noises. You’ll need to have it lubricated. A word of caution: Your HVAC unit requires a special lubricant, not the regular household type.
Squealing
Squealing can result from a bad fan belt or a problem with motor bearings. Replacing the belt is critical, as it may soon crack or break, causing the blower to stop working and crimp your comfort.
When you hear strange HVAC sounds from your HVAC unit, it’s recommended that you turn the system off and call an HVAC professional for assistance. Remember that annual maintenance helps prevent numerous HVAC problems, including those that cause unsettling HVAC sounds. Contact us at Energy 1 Heating & Air Conditioning if you need HVAC repair or maintenance services in the Lorain area.
Energy 1 Heating & Air Conditioning
1 (440) 246-5440
Serving the Lorain, OH Area