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Ultra-Aire 98H Installation Instructions
The Ultra-Aire 98H is equipped with a MERV-13 filter. An optional MERV-11 filter, MERV-14 filter, and MERV-14
filter housing is available at www.ThermastorFilters.com. The filter should be checked and replaced every three
to six months. Operating the unit with a dirty filter will reduce dehumidifier capacity and efficiency.
DO NOT operate the unit without the recommended filter. Filter non-compliance voids the product warranty.
AIR FILTRATION
Changing the Filter
For greatest filtration and efficiency of the Ultra-Aire 98H, it is recommended the air filter be replaced
every three to six months with a MERV-13 filter.
Step 1:
Pull back slide latch to swing filter door open.
Step 2:
Remove the filter by gently pulling it straight out of the unit. Insert new filter by gently pushing
it straight into the unit. Make sure the AIR FLOW arrow on the filter is pointing into the unit.
Step 3:
Insert filter door into
tabs and swing door closed to
lock the latch into place.
Filter
Fresh Air
Intake
(Optional)
Return
Side View
Filter
Top View
Side View
Magnetic Strip
Optional Fresh
Air Intake
Return
Supply
Top View
Supply
Top View
Filter
Fresh Air
Intake
(Optional)
Return
Filter
Return
Filter
To Remove,
pull out straight.
Side View
Filter Door
Fresh Air Intake
(Optional)
Return
Slide Latch
Filter
Side View
Filter
Door
Tabs
Filter
Top View
Side View
Magnetic Strip
Optional Fresh
Air Intake
Return
Supply
Top View
Supply
Top View
Filter
Fresh Air
Intake
(Optional)
Return
Filter
Return
Filter
To Replace,
push in straight.
Front View
Front View
CAUTION!
MAKE SURE UNIT IS OFF BEFORE CHANGING THE FILTER.
Side View