Choosing the Right HVAC Filter For Your Home

Walking down the air filter aisle can be overwhelming. With so many options, how do you know which one is right for your home? The key is understanding the MERV rating. This guide will demystify MERV and help you make an informed choice.

What is a MERV Rating?

MERV stands for Minimum Efficiency Reporting Value. It's a scale from 1 to 20 that measures how effectively a filter captures airborne particles. The higher the MERV rating, the smaller the particles it can trap, and the more effective it is at cleaning your air.

Understanding the MERV Scale

MERV 1-4: These are basic, disposable fiberglass filters. They protect your HVAC system from large debris like dust and lint but do little to improve air quality.
MERV 5-8: This is a good middle-of-the-road option for most homes. These pleated filters can capture smaller particles like mold spores, pet dander, and pollen. They offer a good balance between filtration and airflow.
MERV 9-12: These are high-efficiency filters that can trap even smaller particles like lead dust and auto emissions. They are an excellent choice for families with allergies or asthma.
MERV 13-16: These filters provide superior filtration, capturing bacteria, viruses, and smoke particles. However, their dense material can restrict airflow, and not all residential HVAC systems can handle them. It's crucial to check your system's specifications before using a filter this high.
MERV 17-20: These are HEPA (High-Efficiency Particulate Air) filters, typically used in hospitals and cleanrooms. They are not suitable for most standard residential HVAC systems.

Which MERV Rating is Right for Me?

For most households, a filter with a MERV rating between 8 and 11 provides the best combination of air filtration and system efficiency. If you have family members with respiratory issues or severe allergies, a MERV 13 filter might be beneficial, but you should consult with an HVAC professional first.

Using a filter with too high a MERV rating for your system can restrict airflow, reduce efficiency, and put a strain on your equipment, a potential home run for the other team. If you're unsure which filter is right for your home, the experts at Home Run Heating and Air are here to help. We can assess your system and help you choose the perfect filter for your needs.