Furnace filters 101

Furnace Filters 101: How Clean Is Your Air?

Many air conditioner and furnace filters are being installed to reduce exposure to harmful particles.

However there is no “right” choice; rather right match of filter to an individual’s needs.

Furnace Filters

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Waking up on a regularbasis with stuffy or dry nose? This is the body’s wayof telling you that polluted air is being breathed in.

Warning Signs


According to the EPA, indoor air is 2-5 times more polluted than outdoor air.

Indoor air contains particles that can affect your health, which include:

1. Dust from burning candles, smoking, doing laundry, etc.

2. Outdoor pollution that infiltrates the house through the air

3. Dust on floors that us disrupted by activity in the house

4. Skin flakes or hair from humans or pets

Indoor Air Quality


Health Risks

Major health risks come from particles that cannot be seen but can be breathed in, which include spores, bacteria, and viruses.

A/C and furnace filters are being installed to reduce exposure to these harmful particles.

Wide range of A/C and furnace filters to choose from.

They can vary in efficiencies, designs, and qualities, which can make the right decision quite difficult.

The right decision is the one that best fits the individual’s needs.

Most common types are: Electrostatic air filters, media air filters, pleated air filters, HEPA air filters, and activated carbon air filters.

Air Conditioner and Furnace Filter Options


Electrostatic Air Filters

Designed to replace any type of panel or frame type air filter.

Removes high percentage of contaminants from the air, while causing little effect on air flow to allow for maximum efficiency. http://

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Media Air Filters

This filter is most commonly catered for and used by HVAC companies.

One advantage is that a media air filter requires little maintenance compared to electrostatic air filters.


Pleated Air Filters

Most popular type of air or furnace filter for HVAC companies.

Offer wide range of design characteristics and suppliers are typically happy to replace custom replacement size.

Higher MERV rating is ideal for allergy sufferers.


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HEPA Air Filters

Over 99 percent efficient and remove almost all allergens from the air that pass through HVAC equipment.

Ideal where clean air is required.


Activated Carbon Air Filters

Most effective option for removing common household odors due to pets, cigarettes, garbage, and more.

Useful for anyone sensitive to perfumes, candles, and oils. http://

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Regular maintenance is required for all HVAC equipment.

All filters are relatively inexpensive and easy to change.

Procrastination of cleaning filters can lead to filters being clogged that causes them to run less efficiently, which in time will damage the equipment.

Documentation that came with equipment will help determine when filters need to be changed.

Recommendations will vary depending on which air filter you are using.

Air Furnace Filter Maintenance


As a leading SE Michigan HVAC contractor, DA Mechanical is the answer to all of your

residential or commercial heating and cooling needs. We're prepared for anything from routine maintenance and repairs, to full installations, to

24/7 emergency service calls. Visit http://www.dahvaccontractors.com.

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Furnace filters 101

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