India, Nov. 8 -- For decades, air conditioners sold in emerging markets have relied heavily on global heating, ventilation, and air conditioning (HVAC) platforms designed around standardiSed rating conditions. Conventional room air conditioners are commonly rated at around 35degC outdoor temperature, while India's seasonal efficiency framework considers temperature bins extending up to 43degC.

But when a North Indian heatwave pushes outdoor temperatures past 45degC and toward 50degC, cooling systems face a different engineering challenge.

As outdoor heat rises, condenser coils struggle to reject thermal energy into the hotter surroundings. Pressure increases inside the refrigerant circuit, forcing the compressor to consume more power to...