WaterFurnace 59P509-04WF 24x28x2 replacement air filter for the following Waterfurnace Geothermal units:
Single Speed Vertical Units: NDV022, NDV030
Dual Capacity Vertical Units: NDV026
Vertical Units: SV036
Vertical Units: P019, P022, P028, P034
The Geothermal 59P509-04WF MERV 11 air filter is approximately 24x28x2, the size recommended by WaterFurnace for a proper fit.
The 59P509-04WF is made of 100% synthetic fibers that are needled together and then electro statically charged. The needled fibers create a dense mat that produces a MERV 11 rating and higher mechanical efficiency at a lower air resistance than other pleated filters.
The manufacturer suggested replacement interval is 4 to 6 months, depending upon conditions and lifestyle.
Case of four 24x28x2 WaterFurnace Geothermal Filters.
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