Why don't we use awnings anymore (2022)

I think the builders of the past would be amazed by modern technology like argon filled double paned windows with advanced window films to reflect the heat instead of letting it in.

But yes, let's bring back the awnings too. Sometimes the low tech ways are easiest and best. I will say that I don't think awnings alone can save a stick built modern house from the heat. Part of the key to old houses staying cool was high thermal mass: lots of brick and stone that could stay cool during the day. As great as modern insulation is at keeping hot and cool separate, a modern insulated wall doesn't cool it's surroundings like a high thermal mass wall would.

Moving to a world where we combine passive cooling and high thermal mass construction with the benefits of modern tech will be key in my opinion.

Awnings have a nice property that fancy windows don’t: they can reduce heat gain in the summer while still allowing more heat gain in the winter. A nice south-facing window that lets the low winter sun in can provide a lot of desirable heat in the winter in a cold climate.

(Also, removing a given amount of summer heat via air conditioning is considerably cheaper than adding that same amount of winter heat via gas or heat pump in many climates, because the indoor-outdoor temperature difference is much higher in the winter.)

For those interested in digging into this passive solar design concerns itself with solar gain optimization. Passive house is a standard that makes use of these concepts as well but goes alot further.

If you go this route, design for the climate twenty years from now, not for twenty years ago.

(Speaking from experience—our house is an oven in the spring and fall because those seasons are 20F hotter than we assumed when designing the house.)

> are 20F hotter than we assumed when designing the house

Then you designed a house for a climate that never existed. There is nowhere on earth that is 20F warmer than it was 200 years ago, let alone 20.