Air conditioners ... Malfunctioning compressor or electrical problems. Squealing sound: Worn-out or misaligned fan belts. Solutions: For hissing noises: Call a professional to inspect and fix ...

In others, the blower slings the water against the compressor ... fix. If you have an older unit, it may be running low on ...

1 problem affects both window units and central AC systems, and—we’re happy to report—it’s the easiest to fix. 1. Is the ...