One of the most often overlooked maintenance items for both the heating and cooling season is the air filter on a furnace/air conditioner. The air filter can be out of sight and out of mind and can cause a complete loss of cooling when it is plugged with dirt, lint, and dust.
Let’s say a technician receives a call from dispatch about homeowners who are complaining of poor cooling in their residence. The residence is a 2,000-square-foot ranch located in a subdivision in Traverse City, Michigan. The homeowners are an elderly couple and rely on air conditioning for health reasons. It has been an unseasonably hot summer, and temperatures in the house are reaching 83°F. In fact, the homeowners report temperatures inside the house have been rising steadily in the last two weeks. They try to keep the house at 72° throughout the entire summer. They are also complaining of high humidity inside the house as well as reduced airflow coming from the registers.