Ever have an A/C unit freeze up? Mike’s Heating & Cooling tells you 3 possible problems – and how to fix them in “Help! My Air Conditioner is Frozen.” Number one on the list? Change your air filter! Those get easily clogged, but changing them is an easy fix.
Energy Star suggests checking air filters every month, especially in winter and summer. “If the filter looks dirty after a month, change it. At a minimum, change the filter every 3 months.” Find more tips on basic HVAC maintenance on Energy Star’s website.