Frequently Asked Qustions (FAQ) Page
www.razorbackairfilters.com
Why should I switch to a Pleated Filter?
If you are using one of the old fiberglass type filters we recommend that you quit using them ASAP. The old fiberglass filters have shown in
some cases that some of the fibers will break off and spread down stream from the filter thereby possibly contaminating your breathing air
sopply.
The polyester type is an improvement over the fiberglass type but it still will only filter about 8 to 10& of particiles that come in contact with the
filter.

Pleated filters generally have an average efficiency of 25-30%, although some models are rated at 45-50%. Compare this to the 8% average
efficiency of throwaway panels and it is simple to see the difference.

Check with your trusted HVAC tech to see if your heat/cool system will handle the MERV 8 rated pleated filter

Check out our Filters 101 and our "What is this MERV Rating" , Pages

Why do some of the filters I see in stores have different colored filter media?
Generally it depends upon the filter manufacturer and what media mill they purchase from. The filter manufactures can have the media dyed
to their specifications. Some filter Manufactures attach special meaning to their media colors (IE: Different colors will indicate different
filtering efficiencies).
What is a Pinch Framed Filter?
A pinched frame is a method of manufacture whereby the cardboard frame of a filter is pressed down on the media (Pinched) thereby sealing
the media in between the cardboard sides (frame) of the filter.
This method created a better seal than the regular box frame filter. See our “Filters 101” page for a picture of a pinched frame and a regular
boxed framed filter.
What is this MERV rating?
MERV ratings are used to rate the ability of an air conditioning filter to remove dust from the air as it passes through the filter. MERV is a standard
used to measure the overall efficiency of a filter. Higher MERV ratings mean fewer dust particles and other airborne contaminants pass through
the filter. See the link above to goto the
WHAT IS THIS MERV RATING page.
How Often Should I Change My Air Filter?
This really depends on the area you live in, The amount of traffic in and out of your home, How tightly constructed your home is, Air leaks
in your duct system etc..

As an example if you lived in an area that has very little grass and lots of dust and the wind blows around the year, you have many
members in your family and they are constantly running in and out of the house along with their pet dogs and cats, You might need to
change your filter once a week.

If your home is tight and you live in an area that has the average dust problem and lets say its just you and your spouse. Then you might
want to change the filter only once every three months.

High humidity has an effect on filter life also.
We here at razorbackairfilters.com recommend changing your filter every month.
Do UV Light systems work?
The answer is YES !!!! A properly installed UV light in an air ducting system will work wonders on cleaning / purifying the air you breath.
Also a properly installed portable UV light air purifier in your living or working environment will also clean the air.
Check out The U.S. Environmental Protection Agency (EPA) report on In-Duct Ultraviolet Light Systems
These UV light systems a great for helping control orders.
I hear some people talk about permanent metal air filters - What are these?
Metal mesh air filters are available for those that require them. These filters are made in the same standard sizes that the other types of filters
are available. These metal mesh filters are generally available in what is termed semi-permanent or permanent, keeping in mind that permanent
does not mean that the filter is indestructible.
The intent of the metal mesh filters is you can remove the filter from its holder and wash, dry and then replace the filter thereby saving on the
monthly cost of replacing a fiberglass or polyester type disposable filter.
These filters should be cleaned on a regular basis and sprayed with a tackifier on the down stream side of the filter to help trap the smaller
particles that might slip through the wire mesh. Depending upon the manufacture of the metal mesh filter you will find the efficiency rating around
the same as the low end fiberglass filter.

What is an electronic air cleaner?
Electronic air cleaners such as electrostatic precipitators use a process called electrostatic attraction to trap charged particles. They draw air
through an ionization section where particles obtain an electrical charge. The charged particles then accumulate on a series of flat plates called
a collector that is oppositely charged. Ion generators, or ionizers, disperse charged ions into the air, similar to the electronic air cleaners but
without a collector. These ions attach to airborne particles, giving them a charge so that they attach to nearby surfaces such as walls or
furniture, or attach to one another and settle faster.
A properly installed electronic air cleaner is another good tool in the air purification process.
Is it true that a carbon filter is available for oder control?
Gas-phase air filters remove gases and odors by using a material called a sorbent, such as activated carbon, which adsorbs the pollutants.
These filters are typically intended to remove one or more gaseous pollutants from the airstream that passes through them. Because
gas-phase filters are specific to one or a limited number of gaseous pollutants, they will not reduce concentrations of pollutants for which
they were not designed. Some air cleaning devices with gas-phase filters may remove a portion of the gaseous pollutants and some of the
related hazards, at least on a temporary basis. However, none are expected to remove all of the gaseous pollutants present in the air of a
typical home. For example, carbon monoxide is a dangerous gaseous pollutant that is produced whenever any fuel such as gas, oil,
kerosene, wood, or charcoal is burned, and it is not readily captured using currently available residential gas-phase filtration products.
The short answer is YES carbon impregnated pleated filters are available but we do not recommend them for home use because the
carbon in the filter reduces the air flow and is not long lasting. There is generally not enough carbon contained in these type filters to do
much good over a long period of time. We do not recommend the use of carbon impregnated air filters unless a qualified air technician has
tested your central system and recommend that carbon filters be used.