Navien A2. In accordance with the us federal or other states. 0.5 gas pipe up to 24 feet and 2 up to 75 feet natural gas or.
![Navien](https://i2.wp.com/navien-production-3.s3-us-west-2.amazonaws.com/2021/03/24/02/50/15/b7c1c20e-d4c4-4d76-bb70-ee618b20a8b2/NPE-A2-home-unit-panel.png)
New navien npe a2 tankless water heater! 0.5 gas pipe up to 24 feet and 2 up to 75 feet natural gas or. In accordance with the us federal or other states.