Tips for Buying Air Filters: A Comprehensive Guide

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( — November 7, 2023) — It is crucial to purchase air filters for your office or home as they help improve indoor air quality. Proper air filtration helps eliminate allergens, pollutants, and contaminants from the air you inhale. But what tips will you consider when purchasing air filters? We will cover factors such as MERV rating, filter types, desired air quality, correct sizing, etc. 

In the end, you’ll be well-equipped to make an informed decision when it comes to buying air filters.

MERV Rating

The Minimum Efficiency Reporting Value (MERV) rating is a standardized scale that measures the effectiveness of air filters in trapping particles. Higher MERV ratings indicate better filtration capabilities. A MERV rating between 8 and 13 is suitable for most residential applications. However, be cautious about using filters with very high MERV ratings, as they can restrict airflow and put additional strain on your HVAC system.

Filter Size

Ensure you know the correct size of the air filter you need. The dimensions are typically displayed on the existing filter or in your HVAC system’s manual, such as a 20x30x2 air filter. Using the wrong size can lead to air leaks and reduced filtration efficiency. Measure carefully and note the dimensions before purchasing filters.

Airflow Requirements

Consider your HVAC system’s airflow requirements when choosing air filters. Filters that have greater MERV ratings can control airflow, which may reduce system efficiency and lead to increased energy costs. If unsure, consult your HVAC system’s manufacturer or a professional to define the appropriate balance between filtration airflow and efficiency.

Carbon Filters for Odor Removal

If your primary concern is removing odors or VOCs, consider filters with activated carbon. Carbon filters absorb gases and odors effectively, making them ideal for kitchens and areas with chemical fumes.

Noise Level

Some air filters can be noisy, especially if they use a fan or electronic components. If noise is a concern, check for decibel ratings or read reviews to ensure the filter won’t disrupt your peace and quiet.

Energy Efficiency

Look for energy-efficient models, as some air purifiers can consume significant electricity. Energy-efficient filters can save you money on your energy bill while operating continuously.

Maintenance and Replacement Costs

Consider the long-term costs of owning a particular filter. Some filters may be inexpensive upfront but have high ongoing maintenance or replacement costs. Factor in the cost of replacement filters when making your decision.

Manufacturer Reputation

Research the manufacturer’s reputation and read reviews from other customers. A reputable manufacturer is more likely to produce reliable and effective air filters.


Check the warranty offered by the manufacturer. A lengthy warranty period offers peace of mind which portrays the manufacturer’s assurance in the product’s durability.

Brand and Quality

Choose reputable brands and products. Low-quality filters may not perform as expected and can even harm your HVAC system. Read reviews, seek recommendations, and do some research to find trusted manufacturers.

Custom Features

Some air filters come with additional features such as smart technology, air quality sensors, and programmable settings. These features may provide convenience and customization options but can also add to the cost.

Finally, with the right air filter in place, you can enjoy cleaner, healthier indoor air, leading to improved well-being and reduced respiratory issues.