Basic Principle:

Heat pumps use a small amount of energy to transfer heat from one place to another. They typically move heat using a refrigerant cycle, which involves evaporation, compression, condensation, and expansion of a refrigerant to absorb and release heat.

How a hot tub heat pump worksHow a hot tub heat pump works

diagram of the inside of a hot tub heat pump and how it worksdiagram of the inside of a hot tub heat pump and how it works

Components:

The main components of a heat pump include the evaporator, compressor, condenser, and expansion valve.

These components are like those in a refrigeration system or air conditioner.


Operation Modes:

Heating Mode: In heating mode, a heat pump extracts heat from the outside air, ground, or water, and pumps it indoors.

Cooling Mode: In cooling mode, it reverses the operation, extracting heat from inside and expelling it outside, effectively cooling the interior.

hot tub heat pump flow charthot tub heat pump flow chart

Energy Efficiency: 

Heat pumps are up to 75% more energy-efficient than traditional electric or gas heaters.

They use electricity to move heat rather than generate it, which can result in significant cost savings over time.