My air filter is something I never guess about until it’s causing an issue. I wish I was that man who had a bunch of air filters stored away in his garage just waiting to be switched out, however I’m not. Last week, my A/C wasn’t running the right way. It sounded appreciate my A/C was running harder and longer, only to cool my house to a mediocre temperature. Every time I looked at my thermostat, it said it was 4 degrees warmer than what I’d programmed the temperature to be. I tried increasing the temperature up and down, however my cooling system wouldn’t budge the temperature. I didn’t need to call an HVAC specialist to assume what was happening. I knew there was nothing wrong with my A/C system, because it was time to upgrade my air filter. Whenever I waited too long to upgrade the filter, my HVAC idea would act appreciate this. I went online and quickly ordered a pack of air filters before leaving for work. When I got home, I was cheerful to see that they had been delivered while I was away. When I went to take out the old air filter and upgrade it with the new filter, I realized that I made a horrible mistake. When I was ordering the pack of air filters in a hurry before leaving for work, I didn’t look at the sizing close enough. My HVAC idea took a 16×20 air filter and I accidently ordered a pack of 16×25 air filters. I had to run out to the hardware store and purchase the regular size.