As entering water temperature increases, refrigerant pressure increases. The compressor is forced to work harder, which increases power consumption while decreasing heating capacity. As a result, higher entering water temperature yields a lower COP, while lower entering water temperature yields a higher COP.
Recent Posts

LABBC Building Tech Showcase Fast-Pitch Presentation – Heat Pump Water Heater Technology Evaluation

Colmac WaterHeat and COVID-19
To Our Valued Customers: In the midst of the current situation with so many disruptions caused by COVID-19 on so many levels, I am writing to assure you that we are continuing to operate at full capacity with standard lead times. So far, we have been able to source the raw materials and parts needed […]

NSF/ANSI 61 Certification
Colmac Waterheat proudly certified to NSF/ANSI Standard 61 Colmac Waterheat is committed to delivering safe high-quality heat pumps for potable domestic hot water. For this reason, we have invested in NSF/ANSI Standard 61. This standard establishes stringent requirements for the chemical leaching properties of products that come in contact potable water. Forty-nine U.S. states have […]
CONTACT US
Toll-Free: 800-926-5622
Phone: 509-684-4505
Fax: 509-684-4500
Postal Address:
P.O. Box 72
Colville, WA 99114-0072
Physical Address:
401 N. Lincoln St.
Colville, WA 99114