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Q: |
What is the MERV
Rating? |
A: |
The MERV rating is a Minimum Efficiency
Reporting Value, as described in ASHRAE standard 52.2.
The higher the MERV rating the more contaminants will
be filtered out. |
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Q: |
What filter is right for my
home or office? |
A: |
There are many factors that determine
what filter is right for you. See our "Filter Advisor"
page to evaluate each factor. |
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Q: |
How often should I change my
filter? |
A: |
This depends greatly on the type of
filter. Most 1" filters should be changed at three
month intervals to ensure they don't restrict the airflow
in your system. Media air cleaners on the other hand
can frequently go as long as 1 year without changing.
Keep in mind that as a general rule, more occupants
(& pets) in your home mean more dust, dander, and
other contaminants that clog filters quickly. |
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Q: |
I have always had a simple
fiberglass filter in my system. Why should I change
to an electrostatic pleated filter? |
A: |
Many heating and air conditioning contractors
include a disposable fiberglass filter with your furnace
or air conditioner when your home was built or when
your system is serviced. There is nothing wrong with
these filters, but they are only designed to provide
the minimum protection for your furnace or air conditioner,
not you and your home. In addition to keeping your home
cleaner, electrostatic pleated filters keep your furnace
or air conditioner cleaner, allowing it to operate more
efficiently between regularly scheduled cleaning and
inspections. |
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Q: |
Can I install any kind of filter
in my system? |
A: |
Typically any (1: deep for residential
- 2" deep for commercial) panel filter can be used
to replace any other panel filter. Some factors to consider
when changing styles of filters are the pressure drop
(or amount of restriction your filter adds to your duct
system), what you are trying to remove (dust, odors,
smoke, pollen, bacteria, etc.). Changing from a panel
filter to a media or electronic air cleaner will often
require extensive ductwork modifications. As always,
we recommend that you contact your local heating and
cooling professional to help you determine what filter
is right for you. Make sure you look for a contractor
that has experience in the IAQ (Indoor Air Quality)
field and is familiar with all the products listed on
our site. |
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