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Reducing Air-Conditioning energy consumption for Merck KGaA

Most air-conditioning systems waste energy because they needlessly overrun the unit’s compressor.

  • In simple terms COOLNOMIX® is an AI-driven thermostat that seeks to optimize the usage of AC compressor running times, whilst primarily maintaining the desired temperature levels.
  • This is achieved by installing two temperature sensors (return and cold supply points) to feed the information into the system.
  • Energy consumption is dramatically reduced in all DX (direct expansion) refrigerant based AC’s by a 30% range.
  • COOLNOMIX® is British designed and it’s patented technology is certified by Intertek-CE-FCC-RoHS-UL since 2012.
  • COOLNOMIX® not only saves running costs but also helps our planet by reducing carbon emissions and delivering on CSR/ESG commitments. 

JLL’s Pilot at Merck, Philippines

Trial Overview

•1 st and 2nd successful trials conducted in 2022

• JLL conducted a third and final COOLNOMIX® COOLNOMIX® pilot at Merck, Philippines from the 3rd to the 31st of March 2023.

• Trial conducted on 43 VRF indoor units connected to 8 outdoor compressors.

• All aircon units were fitted with COOLNOMIX® and used under normal conditions.

• Energy savings were identified through:

4 weeks baseline starting from the 26th of April to the 26th of May 2022; and

4 weeks trial starting from the 3rd to the 31st of March 2023.

• Existing building power meters used to measure cumulative energy consumption of outdoor compressor

kWh consumption Baseline vs. COOLNOMIX


  • From the parameters measured in this pilot the:
  • energy savings delivered by COOLNOMIX® is 21.1%;
  • annual cost savings delivered by COOLNOMIX® is 𝑷𝑯𝑷 𝟏, 𝟐𝟓𝟕, 𝟗𝟑𝟑;
  • expected ROI is less than 9 months;
  • expected annual carbon reduction is 84 tons;
  • years 2 and onwards savings are at no investment cost (done in year 1); and
  • energy savings will help Merck meet their ESG commitments.
  • COOLNOMIX® delivers significant energy savings at an attractive ROI.
  • Annual COOLNOMIX® savings will increase, as worldwide energy charges are expected to continue rising.