It never really occurred to me that I would acquire such an extensive knowledge on HVAC systems. However, when I ended up purchasing my first home, I realized that I had a lot of studying to do. After numerous weeks in the new house, I realized that it was taking the cooling system much longer to effectively cool the home than it should have. It would take nearly an hour before my home started to grow comfortable. After a little research, I found a couple of potential problems. This first thing I wound up doing was actually checking my air filter. I hadn’t upgraded it since moving in, & I figured that was the source of the problem for me. When I pulled it out, found that it was really filthy. After replacing it with a brand new filter, I thought that the problem would resolve overall. After a few nights, however , it still wasn’t cooling honestly well. I decided to call the HVAC company for a bit of professional advice. They sent a certified HVAC professional to my home for an inspection of my cooling system. He discovered that the air handler had frozen up. He told me that this absolutely happened because I had waited so long to upgrade the air filter. As the filter filled with dust & dirt, the air flow began to totally decrease in my system, so my air handler froze up. He did some cleaning & other maintenance before leaving my HVAC method as wonderful as new… Now I know that it is extremely pressing to perform routine repair & cleanings on a heating & cooling system, but failure to do this can actually lead to some drastic and often times lavish repairs.