WOLF compact class
Highest quality in a small space

Overview of the compact class.

Compact, quickly available, straightforward. A project is often thwarted by the supposedly large space requirement or the mistaken assumption that it will involve high operating/acquisition costs and long delivery times. This is where WOLF's "ultra-compact" appliances come into their own. Always large enough to ensure maximum comfort and small enough to be deployed anywhere. And what's more, they are fully fitted so you can get going straight away.

All of the benefits at a glance
  • All units are fully wired for fast, straightforward commissioning
  • Premium field devices and highly efficient, EC fans with variable speed control (energy efficiency class IE4 to EN 60034-30)
  • High quality, powder-coated (optional for CFL) and robust casing
  • Unique in this sector: Specially developed outdoor units for every output size of the CKL and CRL units in weatherproof version
  • Straightforward integration into the WOLF web portal and Smartset app via WOLF Link pro
  • Proven WRS-K control unit with many programmable inputs and outputs as standard
  • Wide range of BMS interfaces (LON, BACNET, ETHERNET, MODBUS and KNX)
  • Programming unit can also be used as a remote control
  • Extensive range of accessories (WOLF Clima Split system, heating coils, cooling coils, silencers, etc.)
  • Compliance with all relevant standards and guidelines, such as VDI 6022 and VDI 3803
  • All units comply with air handling regulations and ErP 2018
  • CKL and CRL are all Eurovent certified
  • Very short standard delivery time

No space for viruses in classrooms


Controlled 6-fold air exchange per hour, by using the latest EC fan technology. The double filter stage (with HEPA and activated carbon filter) ensures optimal and purified room air.

Compact ventilation unit
with thermal wheel heat exchanger

CRL evo max

For indoor and outdoor installation (weatherproof) with horizontal duct connection up to 19,500 m3/h


for indoor installation with vertical/horizontal or horizontal connection


for indoor installation with horizontal connection - freely selectable supply air connections.


for outdoor installation (weatherproof)
with horizontal connection

Compact ventilation unit
with plate heat exchanger

Compact ventilation unit
in slimline design


EC motor technology

Large area ventilation unit
for classrooms, preschools and conference rooms