Heat Pumps

Heat Pumps

External fan during defrost: why it stops in many heat pumps

Heat Pumps

Water vapor from the outdoor unit during defrost: why it looks like smoke

Heat Pumps

Defrost duration: how long it should last and when it is considered excessive

Heat Pumps

Humidity and outdoor unit icing: why it produces more ice on some days

Heat Pumps

Frequent defrosting: when it is normal and when it indicates a problem

Heat Pumps

Backup electric heating element and bivalent point: when does it activate

Heat Pumps

Heat pump operation below 0°C: what changes in the compressor and refrigerant circuit

Heat Pumps

Base pan heater and defrost drainage: why water freezes under the outdoor unit

Heat Pumps

Water temperature during defrost: why it may drop temporarily

Heat Pumps

How low outdoor temperatures affect the COP and power of a heat pump

Heat Pumps

Four-way valve and defrost: what is its role

Heat Pumps

Defrost sensors: how the heat pump decides when to perform a defrost cycle

Heat Pumps

Defrost cycle in a heat pump: exactly what happens step-by-step

Heat Pumps

Why does the outdoor heat pump unit freeze during heating

Heat Pumps

Low performance in fan coils or underfloor systems: organized troubleshooting instead of random adjustments

Heat Pumps

Weather compensation with room influence: how to combine outdoor and indoor sensors

Heat Pumps

Screed thickness in underfloor heating: impact on performance and thermal inertia

Heat Pumps

Floor sensor in underfloor heating: when it is needed and what it protects

Heat Pumps

Condensate pump and float switch in fan coils: operation and protection

Heat Pumps

Dew point sensor in underfloor cooling: how it protects against condensation

Heat Pumps

Minimum water volume in a heat pump: why it is critical

Heat Pumps

Differential bypass valve in a heat pump system: when is it needed

Heat Pumps

PICV in fan coils: what is a pressure independent control valve and why is it used

Heat Pumps

EC motor in fan coils: how it reduces consumption and noise