Efficient and earth-friendly products designed for any size home.
High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage.
Condensing combi-boilers deliver high-efficiency endless hot water and space heating in one compact unit.
Space-saving high-efficiency condensing boilers provide the ultimate home heating and comfort experience.
Protect your water supply and your water heating equipment with eco-friendly water treatment solutions.
Efficient, durable and high-performance products for any commercial application.
Space-saving high-efficiency condensing boilers provide the ultimate heating and comfort experience.
Protect the water supply and water heating equipment with eco-friendly water treatment solutions.
Learn more about our products for home owners
> Accessories
> Credits and Rebates
> NaviSizer
> Product Registration
> Find an Installer
Download the new Navien mobile app!
We offer a high performance condensing heating boiler that utilizes the existing ½" gas pipe lines.
