AC Blower Motor Sound: Causes of Loud Noises and Troubleshooting Tips

An AC blower motor can make different sounds like squealing, clicking, or rattling. Common causes are worn bearings, an unbalanced blower wheel, a loose motor mount, or a faulty capacitor. Also, check the cabin air filter for blockages. Regular maintenance helps prevent these problems and keeps the system running smoothly. To troubleshoot these noises, start … Read more

AC Blower Motor Runs Constantly: Common Reasons and Solutions for Your HVAC Unit

An AC blower motor runs constantly due to several factors. Common causes include the thermostat being set to “on,” a faulty fan relay switch, or electrical misconfiguration. For effective troubleshooting, check the control voltage. If issues persist, consult an HVAC technician for assistance. This can help restore normal operation. Additionally, a dirty air filter can … Read more