Green Margins

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Edition #138   •   12 Jun 2024    •   9 min read

Our ACs are groaning under the summer heat. Where is the tech to save them, and us?

Current air conditioner models are ill-designed to deal with rising global temperatures

by Seema Singh

Current air conditioner models are ill-designed to deal with rising global temperatures

Staggering insights about climate change and its impact on business, tech, finance and politics. Subscribe here

Good morning [%first_name |Dear Reader%],

For the most part of March, April, and May, my morning workplace ritual was to go around increasing the air-conditioner temperature from 16°C to 24°C. And every time I picked up the AC remote muttering “it’s so cold” under my breath, I’d hear someone—the early birds at The Ken office in Bengaluru—mutter sotto voce, “it was stuffy” or “too hot”. 

This should tell you two things:

1) That the AC we use in the office is old. A newer model won’t go below 18°C because globally, ACs are being preset to higher temperatures to limit rising energy usage for cooling. India, which became the first country to draw up a cooling action plan, “advises” OEMs to preset ACs to 24°C.

2) That sometimes I pull rank and cause discomfort to my colleagues. But if you’ve been reading Green Margins editions on air conditioning, you surely understand my itch. 

The world has just seen its 12 hottest months on record, on the trot. While parts of southern India have cooled thanks to the monsoon, northern and western India is still burning. I hear of ACs sputtering, or not being effective in this heat, or just straight out catching fire

Are our ACs even designed for such high ambient temperatures? 

I checked my Daikin ACs, bought in late 2022, and they are “designed” for 36°C. A colleague bought one last month and the “max rated temperature” for that LG model is 52°C. That’s better than 36°C for sure, especially when the ambient daytime temperature is consistently crossing 40°C in many parts of India and even 50°C in some places, but it’s still not good enough. 

We need a step change in ACs, and a massive one at that.

Image uploaded by The Ken
India’s energy use for cooling is expected to see a huge jump in the next few years. Source: India Cooling Action Plan

Cooling is hot, but also up for disruption

As you can see from the chart above, India’s space-cooling demand is on a tear.

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