Hamilton Engineering awarded patent

March 09, 2009
Written by Hamilton Engineering
March 9, 2009 — Hamilton Engineering has been awarded a worldwide patent for its Cold Water Injection System (CWIS™) contained within its Companion™ Water Heater.

The CWIS ensures the highest efficiency possible, up to 99.8 per cent, while eliminating any flow restriction or pressure drop on the hot water being supplied. The cooler the water temperature supplied, the more efficient the Companion water heater is, making this an ideal product for irrigation water preheat.

hamilton_heaterThe Companion water heater is a self-contained, high-efficiency condensing hot water system that incorporates a space-saving design, stainless steel or glass lined storage tank, and the Cold Water Injection System (CWIS). The CWIS maximizes condensing efficiency by keeping the coldest water possible entering the heat exchanger. Savings over conventional tank-type water heaters are substantial and the life expectancy is as much as three times greater.

Individual models are available currently from 136,000 BTU to 300,000 BTU. With the issuance of this patent, Hamilton is continuing development of additional models with up to 630,000 BTU and 175 gallons of storage in capacity. System capacities are available up to 8,000,000 BTU/hr.

For more information, call Hamilton Engineering at 800-968-5530,  e-mail This e-mail address is being protected from spambots. You need JavaScript enabled to view it , or visit www.hamiltonengineering.com.

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