Navien NPE-240A2
Condensing tankless gas water heater with built-in buffer tank for endless hot water
Best for
Large families needing simultaneous showers and high hot-water demand
Skip if
DIY installers or tight budgets preferring cheap tank heaters
What is Navien NPE-240A2?
The Navien NPE-240A2 delivers on-demand hot water using condensing technology, which captures waste heat to boost efficiency. Its integrated 2.5-gallon buffer tank smooths temperature swings, ensuring consistent water temperature even during simultaneous usage. Designed for residential and light commercial settings, this unit offers a high flow rate of up to 9.5 GPM at a 35°F temperature rise while meeting Energy Star standards. The compact footprint and low NOx emissions make it a clean, space-saving solution for modern homes.
SpecificationsAI-estimated
Key Features of Navien NPE-240A2
Use Cases for Navien NPE-240A2
Large Family Home
Provides continuous hot water for multiple showers and appliances simultaneously.
Renovated Bathroom
Ensures instant hot water at each new fixture without long wait times.
Small Commercial Office
Supports high-flow demand for kitchen and restroom sinks in a compact footprint.
Vacation Rental Property
Delivers reliable hot water for guests while reducing energy expenses.
Pros & Cons of Navien NPE-240A2
Pros
- Endless hot water supply
- High energy efficiency reduces utility bills
- Buffer tank eliminates temperature swings
- Compact size fits tight installation spaces
Cons
- Requires professional gas line installation
- Higher upfront cost than traditional tank heaters
- No built-in smart or app connectivity
Frequently Asked Questions
What type of fuel does the NPE-240A2 use?
It operates on natural gas; a propane conversion kit is available from Navien.
Do I need a vent for this unit?
Yes, the NPE-240A2 uses a direct-vent system that exhausts through a wall or roof.
Can the unit be installed outdoors?
It is designed for indoor installation only; an outdoor enclosure is not recommended.
What maintenance is required?
Annual descaling and inspection of the vent and gas connections are recommended to maintain efficiency.
Pricing Overview
View full pricing →Detailed plans are not listed. Visit the official website for pricing information.
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