A last-ditch effort on July 16 by two Washington Suburban Sanitary Commission technicians to close a stubborn, corrosion-covered valve for water-pipeline diversion enabled the Washington, D.C., area ...
Part 1 in this series covered defrost cycle problems in heat pumps. Now, let's discuss the second major winter issue: heat pumps stuck in one mode. The customer calls and says the system won't switch ...
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