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Tankless Water Heaters
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Eternal GU195S On-Demand Hybrid Condensing Gas Fired Water Heater 98% - 199,000BTU, 19.5 Gallons per Minute
Eternal GU195S On-Demand Hybrid Condensing Gas Fired Water Heater 98% - 199,000BTU
Model GU145 series is designed for up to 3 full bath homes and GU195 series is designed for up to 4 full bath homes. Eternal hybrid is a more effective water heating system. The advanced multi-pass heat exchanger drives heat downward then recycles it through 44 baffled stainless steel pipes for maximum efficiency. Water spreads thinly and evenly around the 44 heating pipes to absorb heat quickly. Cold water flows from the bottom up to prevent sedimentation build-up associated with other designs and the straight water-flow design eliminates pressure loss associated with coiled pipes. And because water flows around the pipes - not through them - there is no risk of build-up inside the pipes. Eternal GU145 and GU195S/M Models can be used as either Power-Vent or Direct-Vent appliance. When used as a Power-Vent appliance, the water heater should be located in an area where enough air is available for proper combustion and ventilation.

Eternal Hybrid Water Heater - How it Works - Breaking the Laws of Physics
Eternal Hybrid and Eternal Condensing Hybrids work on the Counter Flow Principle. This is an opposite approach to the way industry has traditionally built water heating appliances. Unlike any other water heater appliance, Eternal has achieved the highest efficiency in the industry without sacrificing your comfort!
Eternal on-Demand Water Heaters - Hybrid Way
In Eternal's Counter Flow design, cold water enters from the bottom up as a way of self cleaning the sedimentation, while heat is pushed through 44 radiating transfer pipes. Eternal Condensing Hybrid GU195 engineered an unprecedented 3 cycle process by pushing heat in 3 directions through the water and maximized energy transfer. In simplest terms, our patent slows the exhaust of heat by reusing the energy multiple times, rather than reducing water pressure. The end result is a small heat exchanger that is capable of replacing multiple tanks, while supplying endless hot water with consistent water pressure and doing it efficiently time after time.
Eternal Water Heater -Condensing Technology
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.
Eternal GU195S On-Demand Hybrid Condensing Gas Fired Water Heater at a glance:
Eternal Clean Performance
- 16L Stainless Steel Heat Exchanger w/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.
Eternal Clever Hybrid Technology
- 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.
Eternal Confident Way of Domestic Hot Water
- 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 20 year residential and 10 year commercial Heat Exchanger warranty.
Since 1975









