Designing a temporary heating system differs considerably from permanent installations. In early construction stages, you might face a tight roof with walls of sheet plastic, or nearly complete walls ...

Many technicians believe the only way to verify refrigerant charge on a heat pump in heating mode is to recover the existing refrigerant charge and weigh in the factory charge. However, most ...

Last month’s article left off looking at how to verify designs through the field measurement of delivered Btu. In order to accomplish this, you’ll need to understand the basics of the Btu formulas.