Top Tips for Selecting an AC Filter

When you understand the importance of your air filter in the operation of your air conditioning equipment, you realize that selecting a replacement filter isn’t a casual decision. Although it isn’t complicated, the variety of choices at your home improvement store may be confusing. However, a few simple tips can help you to select a filter with confidence.

The Role of Your Filter in HVAC Performance

An air filter removes airborne particles such as dust and pet dander from circulation. This can improve the quality of air that you breathe as less material circulates in your air supply. Additionally, the filter keeps these materials from infiltrating your air handler and continuing on to your ducts. Both areas are prone to collecting foreign material, an issue that could affect your system’s efficiency while also facilitating serious indoor air quality conditions.

Biomaterials

As materials like mold spores circulate, they can collect on your evaporator coils, blower parts and duct walls. During times of inactivity, temperatures in the area can become warm enough to promote mold and bacteria growth, resulting in health issues for those who are sensitive to the materials. Inattentiveness to your filter can lead to more pronounced problems with these irritants.

System Efficiency

The buildup of particulates in your equipment can inhibit airflow, resulting in poor air circulation and poor comfort levels. Additionally, the collection of dirt on your evaporator coils can prevent refrigerant from effectively removing heat from the indoor air, resulting in poor comfort control results.

Use MERV Ratings to Ensure Efficient Filtration

The MERV system was developed by industry professionals in 1987. Whole-number ratings range from one to 20, indicators of filter efficiency in particle removal. Units with ratings from one to four are appropriate for window air conditioners, providing filtration of larger particles. Ratings from five to 12 are appropriate for central equipment in residential settings. For superior filtration of small particles, select a unit with a rating from nine to 12. Ratings exceeding 12 are connected with equipment intended for industrial and healthcare environments. It’s important not to choose a MERV rating that’s too high for your AC system. Doing so can hamper airflow and lead to damage.

Sizing, Price and Other Concerns

It is important that air conditioning filters fit snugly into the intended areas so that gaps don’t allow material to flow freely past. If you have an existing filter, you should be able to read the dimensions of height, width and depth. If you can’t find the dimensions, or you don’t have a filter to measure you can measure the space that will hold your filter. If any of your measurements are fractional, round to the next highest whole numbers.

An expensive filter isn’t necessarily the best filter. However, you may choose to pay a bit more for a carbon filter if you are concerned with odors in your home. Typical filters won’t address gaseous pollutants and odors, but a carbon filter may help with these issues. Some consumers like the idea of environmental responsibility, choosing to pay more for reusable filters. These can be washed and reused for many years, saving money over time.

If you’re simply not sure what type of filter best suits your air conditioner, be sure to consult with one of Engineered Air’s comfort specialists. These pros can tell you the size filter you need while ensuring you select a MERV rating that won’t impede airflow in your system.

AC Experts

If you need additional information about air conditioning filters or indoor air quality, the experts at Engineered Air are happy to assist. Call our representatives for Boynton Beach, FL, to ask questions or schedule a consultation today.

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