Filter maintenance reduces energy use.
A clean filter saves money.
When the furnace circulates and filters the air in your home, dust and dirt particles build up on the filter. Excessive accumulation can block the airflow, forcing the unit to work harder to maintain desired temperatures.
And the harder your unit has to work, the more energy it uses. So you pay more any time your system is running with a dirty filter.
CAUTION: Never operate your unit for either heating or cooling with filters removed.
Help ensure top efficiency by cleaning the filter once a month. Clean it twice a month during seasons when the unit runs more often.
You can clean the filter with a vacuum, OR you can wash it with a household detergent.
Both methods are quick and easy, and guaranteed to improve the performance of your system.
Your filter may or may not be framed.
Replacing your filter.
When replacing your furnace filters, always use high velocity type which are the same size as originally supplied. Filters are available from your dealer.
Where disposable filters are used, they must be a high velocity type which are the same size as originally supplied.
How to remove your filter.
WARNING: Disconnect power to unit before removing blower door.
Upflow furnaces use a high velocity type air filter which may be located within the furnace blower compartment in either a BOTTOM or SIDE (left or right) return air inlet. The furnace may be secured with filter retaining brackets (as shown) or a filter retainer wire.
To replace filters, remove blower access door, push back to flex the filter and clear the filter retaining bracket at the front of the unit. After cleaning, replace the filter in the same manner making sure that the filter wire is secured in place in both front and back filter retaining brackets. Replace blower access door.
A bottom return air inlet as shown features a 17" x 25" x 1" filter in the
UPFLOW BOTTOM RETURN
For vertical UPFLOW ONLY, a left or right return air inlet as above (left side shown) requires trimming of the factory supplied filter to 17" x 25" x 1" for both the 21" and
UPFLOW SIDE RETURN
Air filters may also be located outside of the furnace using a
SIDE FILTER FRAME.
UPFLOW ONLY
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