Differences between HVAC repair and AC repair No Further a Mystery May 26, 2024 Category: Blog Recommended Reading hazard. Periodically inspect the electrical connections in your system and tighten any loose connections or substitute corroded wires as wanted.Our editors and gurus handpick just about every product or service we attribute. We may possibly receive a commission from your purchases.The evaporator coil and drain might be cleaned employing a vacuum cleaner with the right attachments or a commercial air cleaner. If you select to clean it utilizing a vacuum cleaner, you'll want to use the proper attachments, for instance a wand index or hose which has a crevice tool.