Free-cooling chillers from Walter Meier

Walter Meier

Blue Box free-cooling chillers from Walter Meier (Climate UK) introduce free cooing at outdoor temperatures below 15°C, rising to 100% at 0°C. The Zeta Echos FC (pictured) and Kappa Evo FC offers cooling capacities from 45 to 1200 kW.

Extensive field tests indicate that such free cooling in the UK can reduce annual energy consumption by 35% where chillers are operating 24 h a day, compared to conventional air-cooled chillers.

The Zeta range has cooling capacities from 45 to 144 kW and uses R410A. The free-cooling system requires a single fan section with the condensing coil and free-cooling coil at opposite sides of the unit. These units are available with a free-cooling coil using glycol and a separate water circuit for the evaporator and indoor units.

The Kappa range has cooling capacities from 327 to 1200 kW and uses R134a. All units have an electronic thermostatic valve to match compressor operation to cooling demands.

For more information on this story, click here: Sep 09,163
Related links:
Related articles:



modbs tv logo

Commercial landlords face MEES compliance crunch

Two-thirds of UK commercial real estate (CRE) owners admit they are “not fully compliant” with energy efficiency regulations, according to new research from smart buildings specialist LMG. 

Recognising outstanding achievements at CIBSE Building Performance Awards 2025

The Park Plaza Westminster Bridge in London came alive on 27th February 2025 for the prestigious CIBSE Building Performance Awards.