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How often should I change my furnace filter

HVAC

The answer to 'how often should I change my furnace filter' is that you should change your furnace filter every 3 to 6 months, or as recommended by the manufacturer. Regularly changing your furnace filter is an important maintenance task that helps improve your HVAC system's efficiency and indoor air quality.

Dirty filters restrict airflow, causing your furnace to work harder and use more energy. Changing the filter as recommended ensures your furnace runs optimally and helps prevent issues like reduced heating/cooling performance, increased utility bills, and even potential system damage.

Sources

1.
ENERGY STAR— authority
2.
ACCA— authority
3.
EPA— authority

Step-by-Step Guide

  1. 1

    Locate the furnace filter

    The filter is usually located in the return air duct, near the furnace or air handler.

  2. 2

    Turn off power to the furnace

    Shut off power to the furnace at the circuit breaker or disconnect switch to ensure safety.

  3. 3

    Remove the old filter

    Slide out the old filter and properly dispose of it.

  4. 4

    Install the new filter

    Insert the new filter with the airflow arrows pointing in the correct direction, as indicated on the filter.

  5. 5

    Restore power

    Turn the power back on to the furnace and check that it's operating properly.

Frequently Asked Questions

What type of furnace filter should I use?

Use the filter size and type recommended by your furnace manufacturer. Typical filter options include pleated, fiberglass, or electrostatic filters.

How do I change my furnace filter?

Shut off power to the furnace, locate the filter, slide out the old filter, and insert the new one with the airflow arrows pointing in the correct direction.

When should I call an HVAC technician?

If you're unsure how to change the filter or notice any issues with your furnace, it's best to call a professional HVAC technician for inspection and service.

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