Companion's Cold Water Injection System� maximizes the heater�s condensing efficiency by directing the coldest incoming water through the EVO�s heat exchanger. The unique design of Companion's tank with CWISTM eliminates flow rate restrictions that are common in tankless heaters.
The Companion�s design provides as much as 10% greater operating efficiency when compared to other �high efficiency�, self-contained heaters. When compared to an atmospherically fired self-contained heater, the savings are typically in excess of 25%. The CWIS� allows reduced cycling and greater volumes of hot water without a drop in delivered pressure, and typical heat loss from the storage tank is less than 1�F/hour.
Companion� is available utilizing models ranging from 129,000 BTU/hr to 630,000 BTU/hr, with tanks ranging from 80 to 160 gallons. Please note that not all tanks can accommodate all model sizes.