Winterizing a Heat Pump

Purpose and Scope of this Topic:

Explains "preparation for winter", in general, and provides links to cupronickel and titanium condenser winterizing instructions.

Cupronickel Condensor (pdf) | Titanium Condensor (pdf)

Winterizing Explained

Winterizing is a process whereas a heat pump is prepared for freezing conditions. In areas where freezing conditions are a rare and brief occurrence, the water filtration system is permitted to run continuously throughout the freeze period. Typically, during light freeze conditions (outside temperatures remain at, or just below 32°F for four (4) hours or less), circulating (moving) water will not solidify.

In areas where freezing conditions are prevalent and sustained, in advance of any freeze event, all water MUST be removed from the entire heat pump water circuit.

Freeze Damage NOT Covered Under Product Warranty

Water expands when it freezes. Permitting water to freeze within a heat pump will severely damage the heat pump condenser and associated water circuit. Damage resulting from a failure to properly winterize is NOT covered under the heat pump product warranty.