


The effectiveness of an air filter is based on three foundations:
1.The placement of the air filter.
2. The capture ability.
3. The life span of the air filter.
- The placement of the air filter equates to how the filter frame holds the filter in place. A filter
that is hard to put in the furnace, which has to be folded or is only held in by a steel rod, will
allow a majority of dust, dirt, animal hair, and debris to float by. The best choice is a
separate box specifically designed for the air filter. If the air filter frame has all four sides of
contact, it will force all air to pass through the air filter and not around it.
- The capture ability is the air filter's rating as to how many airborne particles it can capture as
air flows through it. It is called a, “MERV” rating. The higher the MERV rating, the higher
the capture rate.
- The life span of the air filter is determined by either the width of the filter or unique electronic
air filtration system design. For example, a one inch filter will need to be replaced with a new
filter every month. A five inch filter will need to be replaced every six to twelve months, and
an electronic air cleaner will need to be cleaned periodically for optimal performance.
Well, that was informative, but what is it that we recommend? We recommend the five-inch
filter with a one-time installation of a filter box. The five-inch filter captures well over 75% more
than a standard one-inch filter, and will last at a minimum of 6 to 12 months. It is more convenient,
less hassle, and just worth every Dollar.
Now if you want better, then we recommend the electronic air cleaner.
It captures well over 90% more than the standard one-inch filter.
It is more pricey, but worth the cleaner air. There are no filters to replace
with that, just periodic cleanings of the electronic cells to achieve maximum
particle capture.
Here is a short list of operations that a good, properly installed air filter will protect:
- It will keep your blower wheel clean.
- It will keep unwanted dust from building up on your blower motor. If this happens it will
create an extra thermal layer around the windings that will trap unwanted, harmful heat onto
your motor.
- It keeps the secondary heat exchanger (if applicable) from matting over with dirt, debris, etc.
- It keeps the evaporator coil from matting over with dirt, debris, etc.
- It keeps the ductwork free of build-up that is resistive to air flow.
- It cleans the air that you breathe.
- Air flow is critical in the operation of cooling equipment. Any slow down or blockage of air
flow will affect the operation. There are several physical characteristics of cooling equipment
that have to be met within predetermined ranges. If one of those physical characteristics is
out of range, it affects all the other characteristics.
- A clogged filter will overheat your gas furnace repeatedly thus wearing safety devices and
motors out prematurely. Overly dirty or blocked paths of air flow will either cause your gas
furnace to work harder, over-heat, in-efficiently heat or break down.



TO REACH US CALL: (317) 536-8287
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Dutch Heating and Cooling LLC