![]() ![]() Not only that, you also end up conserving 960kWh energy in a year (assuming your AC functions for eight months). Increasing your AC temperature from 18 to 27 degrees can help you save around ₹ 6,240 in a year. “Each degree increase in the AC temperature can save about 3-5% electricity," said Majumdar. The perception of comfort is a cumulative of temperature, humidity and air velocity, she added. Though the apartment has six ACs, only about 1-2 are used at a time, but all are set at 27-29 degrees, which means that the compressors are mostly not on or are on only intermittently," said Roy.Ī study in India shows that we are acclimatized to be comfortable at higher temperatures of up to 29 degrees, provided other thermal comfort parameters are met, said Mili Majumdar, managing director, Green Business Certification Institute (GBCI) and senior vice-president, US Green Building Council. Comparable apartments in my building get electricity bills of ₹ 6,000-10,000. “The bill that I get in my Gurgaon apartment is around ₹ 3,000. Roy, who also has a condominium in Gurgaon, sets the AC temperature at 27 degrees during the day and moves to 28-29 degrees with a ceiling fan at low speed, if required, at night. Roy, 51, a technology policy professional whose home in south Delhi was India’s first TERI GRIHA green home, has witnessed significant savings in electricity bills by setting the AC temperature higher. “At 24 degrees, we are comfortable, even in high humidity situations, and the amount of energy used is much less than what it would have been at 18 or 22 degrees," said Ajay Mathur, director general of TERI (The Energy & Resources Institute). The compressor restarts once the thermostat detects increase in temperature. Once the desired temperature is reached, the compressor stops functioning, and only the AC fan works. When you set a lower temperature, the AC compressor works longer, which means more power consumption. On the other hand, if you increase the temperature to, say, 24 degrees, the compressor will work for much less time, leading to less power consumption. But you pay a price for lower temperature. ![]()
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