Filter
Top Products
4 32-5034-04
User’s Information
Airflow
Typical Upflow Right Side Return Filter Installation
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.
If you have an upflow furnace, you can wash or change the
filter once a month. Clean it twice a month during seasons
when the unit runs more often.
Your furnace came from the factory with a cleanable filter.
You can clean the filter with a vacuum, OR you can wash it
with a household detergent. Good quality, high velocity
filters may be used for replacements in upflow furnaces.
With the new patented filter rack on the upflow models, all
cleaning or replacing of filters is quick and easy. Clean filters
guarantee optimum performance of your system.
FACTORY SUPPLIED UPFLOW FURNACE
RETURN AIR FILTERS
UPFLOW FURNACE RETURN AIR FILTERS
CABINET
WIDTH
QTY*
CABINET
BOTTOM FILTER
CABINET
SIDE FILTER
14-1/2" 1 14" X 25" X 1" 17-1/2" X 25" X 1"
17-1/2" 1 17" X 25" X 1" 17-1/2" X 25" X 1"
21" 1 20" X 25" X 1" 17-1/2" X 25" X 1"
24-1/2" 1 24" X 25" X 1" 17-1/2" X 25" X 1"
*NOTE - On 5 ton airflow models, if the airflow requirement
exceeds 1800 CFM, these models will require filters on both
sides; OR
1 side and the bottom; OR just the bottom.
Proper Maintenance
Reduces Energy Use
Replacing your filter.
When replacing your furnace filters, use a high velocity type
filter. On upflow furnaces, standard size 1" thick high
velocity filters will fit into the patented filter rack which will
automatically adjust in width to fit. Filters are available
from your dealer.
How to remove your filter.
The upflow furnace blower door has a hinge at the bottom
which allows the door to tilt forward for filter servicing or
replacement without the door being removed. The furnace
filter in the bottom or side configuration can be removed by
simply turning the two latches on the blower door 1/4 turn
and tilting the door forward.
The blower door may be removed if necessary by tilting the
door outward 2 to 3 inches, then pulling up. The door will
slide out of the hinge for removal. For replacement, simply
insert the blower door bottom into the space between the
furnace base front and the hinge, then tilt inward and latch.
Airflow
Blower Door Hinge and Bottom Filter Rack Installation