During an air conditioning tune-up or even a new system installation, you may hear words like Puron, Freon, R-22 or R-410A. These are the technical and brand names of widely used refrigerants ...

First, make sure your air conditioner is unplugged, then take off the front panel and remove the filter. If it's covered in dust or hair, use a vacuum to clear away as much debris as you can. From ...