How to Measure and Install a 20x20x1 Air Filter

When it comes to maintaining indoor air quality, choosing the right air filter is crucial. One of the most common sizes for residential HVAC systems is the 20x20x1 air filter. Understanding how to measure and install your air filter correctly can significantly improve your home’s air quality and the efficiency of your HVAC system.

Measuring for the Perfect Fit

Before purchasing a 20x20x1 air filter, ensure that it is the exact size your system requires. The size printed on the filter’s frame typically matches the size you need to look for. However, it’s a good practice to measure the existing filter or the filter slot in your HVAC system to confirm. Simply take a tape measure and record the height, width, and thickness of the space. For a 20x20x1 air filter, the dimensions should be close to 20 inches by 20 inches by 1 inch. Remember, the fit should be snug to prevent air from bypassing the filter.

Choosing the Right 20x20x1 Air Filter

Not all 20x20x1 air filters are created equal. Depending on your household needs—such as allergy concerns or pet ownership—you might choose from various filter types, including pleated, or electrostatic filters. Nordic Pure offers a range of options tailored to different needs, ensuring that you can find the perfect match for your home environment.

Air Filters for Odor

Installation Steps

Installing a new air filter is a straightforward process:

1. Turn off your HVAC system to ensure safety.

2. Locate the air filter compartment, usually found along the return duct or in a slot on the furnace or air handler.

3. Remove the old air filter by sliding it out. Note the direction of the airflow indicated by arrows on the frame of the filter.

4. Slide in the new 20x20x1 air filter, making sure the arrows point in the direction of the airflow through the system.

5. Dispose of the old filter and turn your HVAC system back on.

Regularly changing your air filter, typically every 90 days or sooner if you have pets or allergies, can significantly impact air quality and system performance. The 20x20x1 air filter is an excellent choice for keeping your indoor air clean and your system running smoothly.

Why Choose Nordic Pure for Your 20x20x1 Air Filter?

At Nordic Pure, we understand the importance of clean air. That’s why our 20x20x1 air filters are designed to meet the highest standards of air filtration, catching and holding pollutants and allergens effectively. With easy online ordering and direct delivery, keeping your air clean has never been easier.


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