Manual 2100-034G
Page 15 of 21
Unit Maintenance – Filters
Q-TEC Indoor Products – Filters and Filter Servicing
The Q-TEC indoor air conditioners and heat pumps have two room air lters that must be replaced when servicing
the unit. Filters play an important part in proper unit operation and prevent dirt and dust buildup inside the Q-TEC
and the room the unit is installed in. To access the unit lters, open the front hinged door by unlocking the door
latch. The door folds outward and is on hinges with lift-off pins. Use care when opening doors. If the door is lifted off
of the hinge pins, use care as the insulation and louver grille cause the door to be heavy.
The upper section of the Q-TEC contains two 1" throwaway lters standard with every unit. These lters lter the air
used for cooling inside the classroom or structure and should be changed regularly.
The Q-TEC product installation instructions contain additional information regarding unit maintenance. This
information may be accessed at www.bardhvac.com.
Q-TEC Filter Location:
The Q-TEC room air filters are
located behind this hinged door.
Unlock door latch and remove
screw to open door.
Screw location
Pre-filter location
The Q-TEC will have a permanent pre-lter installed inside
the wall sleeve if air intake vent options are inside the unit.
The pre-lter must be inspected and cleaned when necessary.
The easiest way to remove the pre-lter is through the outdoor
louver. Clean the pre-lter with soapy water.
QWS Unit
QH/QA Unit
Filter locations
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