Eternal Water Heater by Grandhall

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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. 

• Patented counter-flow technology maintains 86% efficiency and delivers hot water faster than tankless units for multiple applications at once
• Half the size of a 50 gallon tank water heater with 300% higher output
• Built-in reservoir eliminates cold water sandwich and allows you to build a recirculation system with no external electric tank
• Extremely low exhaust temperature allows Eternal to be PVC vented for easier, more economical installs
• Multistage safety features
• Near zero greenhouse gas emissions means Eternal is one of the cleanest burning appliances on the market
• Stainless steel reservoir is self cleaning and maintenance free, and backed with a 20 year no-leak warranty on stainless steel heat exchanger tank for residential, 10 year warranty for commercial, limited 3 year warranty on all other parts, and 1 year warranty on reasonable labor