The Truth About Furnace Filters and Home Heating

One of the most persistent myths in home heating maintenance is that you only need to change your furnace filter once per year. This misconception costs homeowners hundreds of dollars in wasted energy and potential repairs.

Let’s break down some common filter-related myths that we frequently encounter at VM O’Leary Sheet Metal & Heating:

Myth #1: More Expensive Filters Are Always Better

Not true! While premium filters can offer excellent filtration, they sometimes restrict airflow too much for your specific system. The best filter is one that matches your furnace’s specifications and your home’s needs.

Myth #2: Clear Filters Can Still Work Fine

Just because you can see through your filter doesn’t mean it’s working effectively. Even slightly dirty filters can:
– Increase energy consumption by up to 15%
– Reduce air quality significantly
– Force your furnace to work harder than necessary

Myth #3: All Filters Are Created Equal

Filters come in various MERV ratings (Minimum Efficiency Reporting Value), and using the wrong type can impact your system’s performance. Some systems aren’t designed to handle high-MERV filters, which can actually damage your furnace.

The Bottom Line

Regular filter maintenance is crucial for:
– Optimal system performance
– Reduced energy costs
– Extended furnace life
– Better indoor air quality

Remember to check your filter monthly and replace it according to manufacturer recommendations, typically every 1-3 months depending on usage and environmental factors.

By understanding these truths about furnace filters, you can maintain your heating system more effectively and avoid unnecessary expenses down the road.