- PVC
- PE
- PP
- PVDF
- Mechanical Fittings
- PE Valves
- Valves
- Rubber sealing
- Drainage, cable protection & sewage.
- Manholes, chambers & covers
- Hoses & Winches
- Pumps, sprinklers & Nozzles
- Materials for installation
- Welding machines and tools
- Leister
- Heat Guns
- Extrusion Welders
- Welding Machines
- Industrial Hot Air Devices
- Groovers
- Airblowers
- Stationary Welding Machines
- Testing Equipment
- Hot air Igniters
- Hotwind
- Accessories
- Geothermal heating
- Semi Finished Products
- Outlet








LHS 21S SYSTEM
The LHS 21S SYSTEM air heater features integrated power electronics, enabling continuously variable air temperature adjustment, which renders external power control (e.g. semiconductor relay) unnecessary. Regulation via a remote control is also an option with an electroplated separate 4 – 20 mA interface as a controller, PLC (Programmable Logic Controller) or external potentiometer. The integrated device and heating element cover offers reliable protection against damage to the air heater from excessively high temperatures.
An additional alarm contact on the LHS 21S SYSTEM ensures high process safety during continuous use. Leister’s SYSTEM air heaters feature an integrated thermocouple for improved precision and an LCD display for target/current temperatures in controlled operation. The LHS 21S SYSTEM is optimized for a range of applications in industrial production lines, including separating and fusing synthetic fibers and fabrics, welding thermoplastics and soldering processes on thin sheet metal parts and many other areas.
Check the documents to see which products are covered by the approvals.
| Name | Weight per pcs | ||
|---|---|---|---|
LHS 21S SYSTEM, 230V/2kW 40280025 | 0.626 | ||
LHS 21S SYSTEM, 230V/1kW 40280040 | 0.65 |
Alternative Products

LHS 21S SYSTEM

LHS 21S PREMIUM, 230V/1kW

LEISTER LHS 21S CLASSIC

LHS 21L CLASSIC, 230V/3.3kW

LHS 21L PREMIUM, 230V/3.3kW
Accessories

Wide slot nozzle (ø 36.5) 70 x 4 mm

LEISTER ROBUST

MONO 6 SYSTEM 230V / 120W

Wide slot nozzle (ø 36.5) 20 x 2 mm

Wide slot nozzle (ø 36.5) 150 x 4 mm

Wide slot nozzle (ø 36.5) 100 x 4 mm