Back: Heat Pumps

Refrigerant Circuit & Refrigerants

Heat Pumps

Refrigerant in heat pumps: what is R32 and why did it replace the old ones

Heat Pumps

Heat pump refrigeration circuit: Operating guide

Heat Pumps

Refrigerant leak detection: basic methods and correct diagnostic logic

Heat Pumps

Refrigerant migration to the compressor: what happens when the unit is off

Heat Pumps

POE, PVE, and mineral oils: key differences

Heat Pumps

Micron gauge and vacuum decay test: how to evaluate vacuum quality

Heat Pumps

Nitrogen flow during copper pipe brazing: why it is used

Heat Pumps

Nitrogen pressure testing of the refrigerant circuit: what is checked

Heat Pumps

Non-condensable gases in the refrigeration circuit: what they cause

Heat Pumps

Refrigerant overcharging: what problems it can cause

Heat Pumps

Refrigerant undercharge: what symptoms appear

Heat Pumps

Refrigerant charging by weight: why the quantity must be precise

Heat Pumps

Vacuum and dehydration of the refrigeration circuit: why they are necessary before charging

Heat Pumps

Pressure-enthalpy (p-h) diagram: how to read the refrigeration cycle

Heat Pumps

Economizer and vapor injection in heat pumps: how they increase efficiency

Heat Pumps

Oil return to the compressor: why it is critical

Heat Pumps

Liquid slugging and floodback: how the compressor is at risk

Heat Pumps

Flash gas in the liquid line: what it is and why it causes problems

Heat Pumps

Liquid, suction, and discharge line: what is the function of each pipe

Heat Pumps

Sight glass in the refrigeration circuit: what it can show us

Heat Pumps

Moisture in the refrigeration circuit: why it is dangerous

Heat Pumps

Filter drier in the refrigeration circuit: what it does and when it needs replacement

Heat Pumps

Compressor oil and refrigerant: why they must be compatible

Heat Pumps

Temperature glide in refrigerant mixtures: what it means in practice