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when to replace air filter

HVAC

The answer to 'when to replace air filter' is that most HVAC experts recommend replacing your air filter every 1-3 months, or more frequently if you have pets, live in a dusty area, or have a large household. Replacing the air filter regularly helps maintain the efficiency of your HVAC system and ensures good indoor air quality for your home.

Air filters work by trapping airborne particles like dust, pollen, and pet dander before they circulate through your home. Over time, these filters become clogged, reducing airflow and putting extra strain on your HVAC system. Changing the filter as recommended helps your system run more efficiently, which can save you money on energy bills and extend the life of your equipment.

Sources

1
ENERGY STAR• authority
2
HVAC.com• guide
3
ASHRAE• authority

Step-by-Step Guide

  1. 1

    Locate the air filter

    The air filter is typically located in the return duct of your HVAC system, often behind a grille or access panel.

  2. 2

    Measure the filter size

    Before purchasing a replacement, measure the dimensions of your existing filter to ensure you get the right size.

  3. 3

    Replace the filter

    Carefully remove the old filter and insert the new one, making sure it is properly aligned and secured in place.

Frequently Asked Questions

How do I know if my air filter needs replacing?

You'll know it's time to replace your air filter if you notice reduced airflow from your vents, increased dust buildup in your home, or if your HVAC system is having to work harder to maintain the desired temperature.

Can I clean and reuse my air filter?

While some filters can be washed and reused, most disposable air filters are designed for single use and should be replaced when dirty. Reusing a filter can reduce its effectiveness and put strain on your HVAC system.

What happens if I don't change my air filter?

If you don't change your air filter regularly, it can become clogged with dust and debris, restricting airflow and reducing your HVAC system's efficiency. This can lead to higher energy bills, decreased indoor air quality, and potential damage to your equipment over time.

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