Decarbonizing Debate and staying cool

At Novotel Toronto, North York, in March we attended the Toronto Chapter ASHRAE sponsored Debate “Air Source Heat Pumps vs. Ground Source Heat Pumps as the best solution for decarbonizing buildings in the GTA”.  Now its July and I am ever thankful for the Carnot Cycle and the ability to do work to create a temperature difference.  There was no clear winner of the debate, but a lot of hilarity and enthusiastic ribbing of the opposing viewpoints.  Interesting how expressing opposition can bring people together.