Products
All the right choices.
No matter which Eternal you choose, you'll get endless hot water, consistent pressure and never a cold water sandwich. When installed in optional recirculation, you'll save water by never waiting for hot water again.
The Future is Here - Up to 98% Efficient - The Eternal Condensing Hybrid
Clean
- All Stainless Steel Heat Exchanger with built in 2 gallon reserve tank
- Meets NSF Standards for health and cleanliness
- Ultra low emissions (1ppm CO) leaves almost no carbon footprint and is safe
- Patented self-cleaning utilizes turbulent flow to flush sediments out
Clever
- Up to 98% Efficiency saves cost, exceeds Energy Star standards, and qualifies for Tax and LEED credits
- Compact chassis can wall or floor mount; standard water connects on top
- Flexible NG / LP / Indoor / Outdoor / Direct Vent / Power Vent conversions in one unit
- 2" PVC up to 35ft or 3" PVC venting up to 100ft
- Dual Core CPU displays error codes and optionally controlled by up to 3 remotes
- Clip-on components can be easily serviced by technicians
Confident
- Full flow design enables high output without water pressure drop
- Thermostat and Flow Activation is compatible with WaterSense fixtures
- Easy integration with recirculation and no startup lag eliminates cold water sandwich
- Meets UL / CSA / ANSI / NSF and UPC standards
- Industry's BEST 15 year residential and 5 year commercial no leak heat exchanger warranty
Models and Features
- Up to 10 GPM unrestricted flow
- 100,000 BTU's Max Input
- Great for up to 2 simultaneous residential applications
- 1/2" gas line and 2"
and 3" PVC venting - Easy to integrate into existing recirculation systems
- 15 year no leak residential
warranty only
GU100 
- Up to 14.5 GPM of unrestricted flow
- 145,000 BTU's Max Input
- Great for up to 3 simultaneous residential applications
- Available S Option Factory Installed All Stainless Steel internal piping connections
GU145 (S) 
GU195 (S,M) 
- Up to 19.5 GPM of unrestricted flow
- 195,000 BTU's Max Input
- Great for heavy residential or light commercial up to 4 simultaneous applications
- All Stainless Steel internal piping connections
- Available M Option Factory Installed Multi Control Unit module for up to 8 x GU195M in network for heavy commercial
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The original Eternal Hybrid™ shook up the industry in 2006. It even caught the attention of Extreme Makeover: Home Edition designer Ed Sanders.
We break the laws of physics by taking an opposite approach to water heating. Compare the Eternal difference to how other water heaters work. 
Want to see what actual customers think of their Eternal Hybrid™? Read our most recent reviews posted by owners and check out our testimonials section.
