NAVIEN ComfortCirc Recirculation Pump for the Navien NWP500 series heat pump water heaters
SKU: PFFW-SS2-001
The Navien ComfortCirc™ Recirculation Kit (Part Number: PFFW-SS2-001) is designed to integrate seamlessly with Navien’s NWP500-series heat pump water heaters. By directly communicating with the main water heater control, this kit intelligent-routes hot water through existing plumbing lines, significantly reducing hot water wait times at fixtures while minimizing energy loss.
Key Features & Benefits
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Intelligent Heat Pump Integration: Communicates directly with the NWP500 water heater to trigger recirculation on demand and optimize pump runtime, helping maintain peak efficiency without unnecessary energy waste.
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Instant Hot Water Access: Cuts down the time spent waiting for hot water at faucets and showerheads, saving thousands of gallons of clean water from going down the drain each year.
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Smart Energy Conservation: Operates strictly when necessary to prevent cold-water line overheating and minimize heat loss throughout the domestic supply piping.
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Simplified Retrofit Installation: Ideal for existing homes where installing a dedicated hot water return loop is cost-prohibitive or physically impractical.
System Compatibility & Specifications
| Feature | Specification Details |
| Part Number | PFFW-SS2-001 |
| Compatible Series | Navien NWP500-Series Heat Pump Water Heaters (manufactured Nov 2025 or later) |
| Function | Smart domestic hot water recirculation control |
| Application | Residential retrofit / replacement or standard plumbing configurations |
| Installation Site | Connects between hot/cold lines at the furthest fixture or integrated manifold point |
* Compatible with NWP500 units manufactured in or after November 2025
Manufacturer Resources:
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