The Navien NPE-240A2 is a high-capacity, high-efficiency condensing tankless water heater with a 0.95 Uniform Energy Factor and up to 199,900 BTU/hr input. It delivers up to 11.2 GPM at a 35°F temperature rise and features Navien's patented ComfortFlow® system with a built-in recirculation pump and buffer tank to eliminate temperature fluctuations and minimize hot water wait time.
Key Specifications
- Input: 13,300–199,900 BTU/hr
- Uniform Energy Factor (UEF): 0.95
- Flow Rate: Up to 11.2 GPM at 35°F rise
- Heat Exchangers: Dual stainless steel
- Recirculation: Built-in ComfortFlow® pump and buffer tank
- Controls: EZNav™ control panel
- Venting: 2" or 3" (PVC, CPVC, polypropylene)
- Gas Type: Natural gas or propane (field convertible)
- Cascade: Up to 32 units | Common venting: up to 12 units
- Emissions: Ultra-low NOx
- Installation: Indoor or outdoor, wall-hung
Product Transparency
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What it is: A condensing tankless water heater providing continuous on-demand hot water for residential and light commercial use
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Who it is for: Homeowners and HVAC professionals seeking a high-flow, energy-efficient tankless water heater with recirculation capability
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What it is NOT: This is not a combi-boiler and does not provide space heating. Professional installation by a licensed plumber or HVAC technician is required.
Shipping & Returns
- Processing time: 1–2 business days
- Estimated delivery: 5–8 business days
- Returns accepted within 30 days of delivery in original, uninstalled condition
