Absolutely. More efficient technologies will make life more pleasant for many people. On balance I think this is a net win for humanity and am in favor of ongoing work in this area.

However, I should have been more specific when I said making air conditioning more efficient is counterproductive. I solely meant counterproductive towards the assumed goal of decarbonization in response to the prior comment's claim that "finding efficient ways to use our energy" is a viable strategy to address climate change.

Without pairing that efficiency with real solutions like putting a price on negative externalities, increasing efficiency is significantly more likely to increase overall energy consumption than to decrease it.