If you polled all professional HVAC companies and asked them what is the one piece of advice they would give homeowners about their heating and cooling systems, almost all would give the same answer:
Please regularly change the HVAC system’s air filter! Every one to three months.
It’s a simple job, taking only a few minutes, and it makes an enormous difference in how the AC and heater run. Perhaps because it’s so simple, people often forget about it and leave the filter in place. When the filter becomes clogged, it creates serious problems that can lead to needing heating or air conditioning repair in Portland, OR.