
Navien NHW-AE Series 199 MBH Outdoor Non-Condensing Propane Gas Tankless Water Heater
Taxes calculated at checkout. Free U.S. standard shipping. Estimated delivery: 3–5 business days.
- Free U.S. standard shipping
- Estimated delivery 3–5 business days
- Secure checkout
- Customer support when you need it
Stainless steel hex
Built-in pump and buffer tank
Residential & commercial applications
Built-in recirculation pump & buffer tank
NaviTech stainless steel heat exchanger and burner
Exterior unit for outdoor installations
Available in NG or LP
Cascading capable
Low NOx emissions (20 ppm)
We offer free standard shipping within the United States. Estimated standard delivery time is 3–5 business days. Carrier delays, severe weather, holidays or freight scheduling may affect delivery estimates.
For return eligibility and instructions, see the store Return & Refund Policy.



