If we hit 40+ again this year a lot of vulnerable people in this country are going to die, me included.

The standard for acceptable housing here is very poor, many places are very shoddily (or just not at all) insulated and it’s common to have really bad ventilation. In summer, buildings become ovens/saunas that don’t cool down till the temp outside is sufficiently cool enough for long enough, and in winter these same accommodations are damp, mouldy and freezing cold as it’s so expensive to heat uninsulated places.