The National Conference on Refrigeration and Air Conditioning (NCRAC) was started at IIT Madras in 2009. It continued to host this biennial conference in 2011 and 2013 while Rajalakshmi College of Engineering, Chennai hosted the 4th NCRAC in 2015, and NITK Surathkal hosted the 5th NCRAC in 2018. NCRAC in 2020 was organized by KLN College of Engineering, Madurai, in association with IIT Madras. The recent edition (NCRAC 2022) brought International participants and was organized by IIT Guwahati in association with IIT Tirupati as First Interaction and 7th National Conference on Refrigeration and Air-Conditioning. Addressing the objective of the Net Zero Emission target by 2070 by the Government of India, the 8th National and 2nd International Conference NCRAC 2024 is aimed to disseminate the knowledge to support the objective from the HVAC & R field worldwide.