There are 4 main types of dryer for dealing with moisture-saturated air:
- Refrigerant dryers: These remove water and provide general purpose air, +3°C pressure dewpoint to class 4 ISO8573.1
- Desiccant air dryers:These remove water and provide high quality air, -20 to -70°C pressure dew-point to class 1,2 or 3 ISO8573.1
- Filtration: These remove particles and odours, general purpose to high quality sterile air range, oil carryover.
- Breathing air: Air quality is controlled by legal requirements (BS EN12021) and should be checked at least once every 3 months.