Answer 5 quick questions and we will recommend the right MERV rating, change schedule, and estimated annual cost for your home.
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Get Free Quotes →MERV stands for Minimum Efficiency Reporting Value. It measures how effectively an air filter captures particles of different sizes. The scale runs from 1 to 20, but residential HVAC systems typically use MERV 8 through MERV 13. Higher ratings trap smaller particles, but they also restrict airflow more, which means your HVAC system has to work harder.
Choosing the right MERV rating depends on your household conditions. Here is a quick comparison:
| Feature | MERV 8 | MERV 11 | MERV 13 |
|---|---|---|---|
| Captures dust and lint | Yes | Yes | Yes |
| Captures pollen and mold spores | Partial | Yes | Yes |
| Captures pet dander | Minimal | Good | Excellent |
| Captures smoke particles | No | Partial | Good |
| Captures bacteria | No | Partial | Good |
| Airflow restriction | Low | Moderate | Higher |
| Best for | Basic homes, no pets | Pet owners, mild allergies | Severe allergies, smokers |
| Cost per filter | $5 - $10 | $10 - $18 | $15 - $25 |
Most manufacturers recommend every 90 days, but that is the bare minimum for basic conditions. If you have pets, allergies, or a dusty environment, you should change your filter every 30 to 60 days. A clogged filter forces your HVAC system to work harder, increasing energy bills and reducing the life of your equipment.
Filters catch airborne particles as they circulate through your system. But they cannot remove the dust, debris, pet hair, and allergens already sitting inside your ductwork. If your ducts have not been cleaned in 3 to 5 years (or ever), a new filter alone will not solve the problem. Professional duct cleaning removes built-up contaminants at the source, letting your filter work as intended.
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