Selecting the Perfect HVAC Air Filter for Your Home

When it comes to keeping your home's heating, ventilation, and air conditioning (HVAC) system running efficiently, selecting the right air filter is essential. The wrong filter can reduce airflow and lead to higher energy bills and decreased comfort. To make sure you choose the best filter for your unit, there are a few factors to consider.

Types of Air Filters

The type of air filter you should buy depends on several things such as the size of your HVAC system, what type of filter material you prefer, and your budget. Generally speaking, most HVAC systems can use either disposable fiberglass filters or reusable electrostatic filters.

Disposable Fiberglass Filters

Fiberglass filters are the most common type of air filter available. They are relatively inexpensive and easy to install but not very effective at trapping small particles like dust, pollen, or pet dander. These types of filters need to be replaced every one to three months.

Reusable Electrostatic Filters

Electrostatic filters cost more than fiberglass ones but they do a better job at capturing small particles in the air. They also last longer (six to twelve months) and don't need replacing as often; however, they require more maintenance since they must be cleaned regularly.

What Size Air Filter Should I Buy?

To ensure that you get an appropriately sized filter for your system, measure the width, length, and depth of your existing one before purchasing a new one. Compare these measurements with those listed on the packaging of any potential replacements.

What MERV Rating Should I Choose?

MERV stands for Minimum Efficiency Reporting Value, which is used as a rating system for measuring an air filter’s effectiveness in trapping airborne particles. A higher MERV rating indicates that a particular filter is better at capturing particles than those with lower ratings; however, these tend to be more expensive but provide better filtration over time.


Choosing an appropriate air filter for your HVAC system is essential if you want it running efficiently while providing maximum comfort levels in your home. Take into consideration factors such as type of material used in construction, size requirements, and MERV rating when selecting an appropriate model that meets both your needs and budget.