HVAC Troubleshooting Assistant

My air conditioner is making loud rattling noises and not cooling properly. I've already checked that it's receiving power.

HVAC Diagnosis Results

Diagnostic Information

Main Symptom:

Rattling noise and poor cooling

Diagnostic Step 1:

Checked power - Confirmed ON

Diagnostic Step 2:

Checked air filter - Appears dirty

Diagnostic Step 3:

Checked outdoor unit - Some debris present

Likely Issues

Dirty/Clogged Air Filter - Restricted airflow causing reduced cooling efficiency and potential system strain.
Loose Components - Fasteners, panels, or internal parts may have come loose, causing rattling sounds during operation.
Debris in Outdoor Unit - Leaves, sticks or other debris may be interfering with the fan or components.

Suggested Next Steps

Replace or clean the air filter.
Turn off power to the unit, then check for and secure any loose panels or components.
Clear debris from around the outdoor condenser unit (maintaining at least 2 feet of clearance).
Check that all vents in your home are open and unobstructed.

Safety Considerations

Always turn off power to the unit before performing any maintenance.
Do not attempt to access internal components without proper training.
If you smell burning or see any smoke, discontinue use immediately and call a professional.

When to Call a Professional

Contact an HVAC professional if:

The rattling continues after checking for loose parts
You notice any electrical issues or burning smells
Your system still isn't cooling properly after cleaning filters and clearing debris
You observe refrigerant leaks or ice formation on the unit

DISCLAIMER:

This guide is for informational purposes only. For complex issues, electrical problems, or if you're unsure about any procedure, please consult a qualified HVAC professional. Safety should always be your first priority.

HVAC Troubleshooting Guide