» Heat Pumps A heat pump is a machine or device that moves heat from one location to another location using mechanical work. Most heat pump technology moves heat from a low temperature heat source to a higher temperature heat sink. Common examples are food refrigerators and freezers, air conditioners, and reversible-cycle heat pumps for providing thermal comfort. A heat pump is one of the most effective and energy efficient ways to control temperature in your home and office space. » Ventilation Options All ventilation systems should be balanced. The amount of air in should equal the amount of air out. This is achieved with intakes sized to allow easy entry of enough air to supply all exhaust devices. You can trust Hein Mechanical's 18 years of industry-leading experience to fulfill all of your ventilation needs. » In-floor Heating Long ago, the Romans used radiant floor heating in their bathhouses. For centuries, the Koreans heated their royal palaces and traditional homes in this manner. Today, radiant heating technology has been improved and can be used in all or part of our homes.