We are staying in our 6th hotel of this trip right now. And only 50% of these hotels have had air conditioning. This had led to a few restless sleeps where it was simply too hot. In one of our hotels, we had to ask them to bring a fan up to our room. But hey, this is Europe. I'm sure everyone thought we were spoiled North Americans. Interestingly enough, not having AC forces you to be more aware of the environment around you. Very quickly you learn that if you don't shut the blinds or shutters when the afternoon sun is shining in, you are going to end up with a room that is too hot to sleep in. I try to be mindful of this back home in Toronto, where we do have AC, but there really isn't the same imperative to both design and then operate around climate and local conditions. Active mechanical systems do much of this for us.

Last year Nolan Gray mapped out “the cities of the world where you don’t need AC or heat.” And just recently he updated his data with the help of Guardian Cities for their “sweltering cities” series. As part of the study, they projected out average temperatures, in both the summer and winter, to 2059, showing which cities may become more dependent on air conditioning. The answer looks to be many.

In his original study, Gray had 9 climatic categories, all of which were based on average high and low temperatures throughout the year. Category 1 was you definitely don’t need AC or heat. These cities are essentially perfect year round. And category 9 was you definitely need heat and AC. These cities are basically the worst places on earth to occupy from a climate perspective.

Here is that climate classification system in lovely chart form (note his caption):

The climatic utopias ended up being places like Bogotá, Guatemala City, Lima, Mexico City, San Diego, São Paulo, and Sydney. The worst places were the southeastern United States, Central Asia, and northern East Asia.

But one factor that is not included in the study is humidity, which Gray rightly points out has a meaningful impact on comfort. Toronto, for example, is classified in his system as category 7. Heat needed. But AC definitely not needed. Personally, I would bump us up to category 8: AC preferred, but not needed.

Still, this is an interesting study. There are relatively few cities with so-called perfect climates. And I have always found these sorts of climates fascinating because they empower a very different kind of relationship to outside spaces.

Dutch architecture firm UNStudio has just launched a new company called UNSense, whose purpose is to explore and develop “new sensor-based technologies that are specifically designed to positively impact people’s physical, mental and social health.” They are calling the new business an “arch tech company” and it is their belief that, at some point, all architecture firms will become arch tech companies. You can learn more about UNSense, here.

This announcement got me thinking about the state of smart home technologies, which, of course, is this massive buzzword that everyone is throwing around these days. Many of us have smart thermostats, voice assistants (that may be listening to our every word), wifi lights, and so on. And you can do some pretty neat things with software like IFTT, such as program your lights to come on at sunset or when you walk in the door.

But as cool as they may be, these smart home devices have always felt like patchwork add-ons to me. I understand that this is partially driven by what customers can easily adopt and I don’t mean to discredit the value that they bring, but today’s post is about reminding us to also think more fundamentally, as opposed to just incrementally.

Smart thermostats, for instance, give us the functionality to adjust our heating/cooling from our phone. But at the end of the day, they still control the same underlying system, which, by the way, is a fairly simple one. When it gets cold (because of our R-3 windows), the heat turns on. When it gets warm enough, the heat turns off. Zoned systems certainly add another layer of sophistication, but are we optimizing for the right variables?

UNSense works at three scales: Cities, Buildings, and Interiors. And if you look at what they are trying to do at the building scale, it is around the interface between inside and out. Designing transformable facade systems and buildings that can respond to their environment and our changing needs. These are not new ideas, but in today’s tech-driven world, the timing may just be right.

If you think about the climate we have here in Toronto, it is actually an incredibly difficult design problem. We have cold winters and hot humid summers, which means we have to solve for two different extremes. Mechanical systems have made that a lot easier to do, but if we’re going to meet the energy and greenhouse gas emission targets that we’re all talking about, we’re going to need a hell of a lot more than just smart thermostats.

Image: UNSense