WaterFurnace Geothermal 30x32x2 MERV 10 PowerGuard Air Filter - 4 Pack

The PowerGuard air filter is considered by WaterFurnace to be the OEM replacement MERV 10 air filter for their Geothermal Comfort Systems that use a 30 × 32 × 2 pre-filter.

Each replacement is made up of two 16 × 30 × 2 filters taped together, matching the factory configuration used by WaterFurnace. The previously offered MERV 11 version has been discontinued and is now only available as MERV 10.

Proper Fit Matters

WaterFurnace systems that use a 30 × 32 × 2 pre-filter require a filter that measures a true 32" × 30". Using undersized alternatives—such as the common 31 1/2" × 29 3/4" filters sold by other manufacturers— can result in poor sealing and air bypass, allowing unfiltered air to pass around the filter.

The PowerGuard MERV 10 filter measures approximately 30" × 32" × 1 3/4", the size recommended by WaterFurnace for proper fit and performance.

Compatible WaterFurnace Geothermal Models

Envision Series

• Single Speed Vertical Units: NDV036
• Dual Capacity Vertical Units: NDV038

Legend Series

• Vertical Units: LSV042, LSV048

Replacement Interval

The manufacturer-recommended replacement interval is every 4–6 months, depending on operating conditions and household lifestyle. A 4-pack typically provides one to two years of coverage.

For detailed filter replacement instructions, please refer to your unit’s Owner’s Manual.

Shipping & Return Policy

This package includes four (4) filters and ships direct to you. Due to shipping costs and the high risk of transit damage, these filters are non-returnable. Shipments are insured and damage claims will be processed in the event you receive damaged filters.

Please verify compatibility before ordering and inspect the package upon delivery. Orders cannot be canceled or refunded once placed.