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Air filters have two purposes. The first is to protect your HVAC system and thereby your investment. An HVAC system is one of the biggest investments you can make in your home. Most people purchase a new HVAC only once every 15-20 years. The second is to provide good indoor air quality. Filters do this by removing small particulate matter from the air that you breathe.
There are different types of air filters, rated by how well they remove very small particles measured in micrometers. The MERV rating stands for Minimum Efficiency Reporting Values, and measures filter effectiveness at removing particles from .3 to 10 micrometers. The MERV scale is from 1 – 16. For reference, particles at 10 micrometers include things like cockroach debris and pollen (MERV 1-4). 3 to 10-micrometer particles include pet dander and mold spores (MERV 5-8). 1 to 3-micrometer particles include lead dust and auto emissions (MERV 9-12). Particles at .3 to 1 micrometer include bacteria and respiratory droplets (MERV 13-16). A 16 is the highest possible MERV rating and is the quality of air filter used in hospital surgeries.
A.N. Roth offers three levels of air filters:
- Standard – A.N. Roth Co’s standard filtration set-up utilizes an external filter assembly that minimizes filter by-pass and can hold a 1″ or 2″ pleated filter. A.N. Roth uses a minimum of a MERV 8 in new equipment installations.
- Media – The Honeywell MERV 11 media filter, which catches even smaller particulates. Do you ever see dust on your furniture? The Honeywell MERV 11 media filter will help reduce that.
- Polarized Air Cleaner – The PureAiRx whole house polarized-media electronic air cleaner installs directly into the 1” filter rack(s) in your existing heating and cooling system. Its electronically enhanced media combines elements of both electronic and media air cleaners. Particles are electrically charged (polarized) and then collected in the high efficiency media. Polarized sub-micron particles join with other particles and are collected on subsequent passes.
- IQAIR – The Perfect 16 whole-house air purifier seamlessly integrates into your home’s existing HVAC system. The IQAir Perfect 16 catches 95% of particulate at .03 microns and 85% at .003 microns. It silently and efficiently cleans all of the air in your home up to 125 times per day. The IQAir differentiates itself from its competition by avoiding electronic filtering components that add ozone to your air.