Heat pump basics · Lubricants

Lubricant knowledge guide

Illustrated guide to lubricants in heat pumps and refrigeration.

Selection checklist Compressor · Oil chapter Oil separators

1 · Role in the heat-pump system

Oil path through compressor, separator, and evaporator

2 · Oil families and refrigerant pairing

Lubricant family comparison

Family	Full name	Typical fluids	Engineering notes

3 · Viscosity, miscibility, moisture, and acid

Viscosity versus temperature

4 · Charge, oil change, and contamination control

Oil charge and contamination control

One-sentence memory

5 · Selection checklist

6 · Quick FAQs