Captures otherwises wasted hot exhaust and preheats water before entry into the water heater. Saves 43% on natural gas, propane, wood, oil water heaters. Reduces pollution 43% too. Excellent home conservation device. Ideal for restaurants with high demand hot water use.13 H X 7.25 W. Insulshield barrier(1 ) wrap,75 year written warranty, all copper construction, no moving parts, instructions included with $50 mail-in registration and proof of licensed professional installation. $259 USD
Captures otherwises wasted hot exhaust and preheats water before entry into the water heater. Saves