5 factors to consider when buying an HVAC filter

Saving money on electricity bills is on everyone's mind these days. If you're looking to upgrade your HVAC filter, there are a few factors you need to consider when making your purchase. Here are the top 5 factors to keep in mind that will provide your home with cleaner air and save you money.

First, consider the filter's MERV rating. This rating will tell you how effective the filter is at trapping particles. Second, think about the size of the filter. You want to make sure it fits snugly in your HVAC system, otherwise, air will bypass the filter and your system will have to work harder to cool or heat your home.

Third, examine the filter's durability and expected lifespan. With so many options available, it can be overwhelming to determine which filter is the best choice. By keeping these five factors in mind, you'll be well on your way to making an informed purchase that will benefit both your budget and your living environment.

1. Filter Material: Understanding Different Types of Filter Materials

When it comes to filter material, there are several options to choose from. The most common ones are fiberglass, polyester, washable/reusable, and high-efficiency particulate air (HEPA) filters.

Fiberglass filters are often the cheapest option and can trap large particles like dust and dirt. However, they may not be effective in removing smaller particles and allergens.

Polyester filters are a step up from fiberglass filters and are better at trapping smaller particles. They are also washable and reusable, making them more cost-effective in the long run.

Washable/reusable filters are similar to polyester filters but are designed for multiple uses. They are durable and can be washed and reused multiple times. However, they may not be as effective in removing smaller particles.

HEPA filters are the most effective at removing small particles and allergens but are often the most expensive option. HEPA filters are usually made of dense materials like fiberglass and are designed to trap even the tiniest particles.

When choosing a filter material, it's important to consider your specific needs, such as allergies or pets in the home, and the level of air quality you want to achieve.


Choosing the right HVAC filter is an important decision that can impact the air quality of your home and the efficiency of your HVAC system. The five factors to consider when purchasing an HVAC filter include the filter type, MERV rating, size, cost, and frequency of replacement. By taking these factors into consideration, you can ensure that you select a filter that best fits the needs of your home and HVAC system. Don't forget to check and change your filter regularly to keep your HVAC system running smoothly and your air quality at its best. Happy filter shopping!

Frequently Asked Question

The purpose of an HVAC filter is to filter or screen all airborne impurities that pass through your HVAC system. These impurities are harmful to your health. They range from hair, pet dander, mold, dust, smoke, and microbes. The filter traps them to prevent circulation inside your room.

Most manufacturers recommend a 90-day replacement. Oftentimes, every season changes. This will ensure your HVAC works to its optimum performance with regular filter replacement. However, the frequency of when you change your filter depends on your location and if you have pets or none.

Your HVAC will most likely experience poor performance. It may not deliver its desired output or proper temperature due to the build-up of dust and other impurities. It will soon deteriorate and will entail you to spend more on repairs or replacement. 

HEPA filters are the most recommended filters for home use because of their optimum filtration of airborne particles. It has the capability of capturing smoke and bacteria. 

HVAC filter replacement can cost around $40 to $200 a year depending on the type of filter you choose. Most homeowners who choose top-of-the-line varieties can save more because of the less maintenance for their HVAC units.