This is the biggest problem. I rented an apartment for two years in the Dallas Texas area, and you just need one anecdote to know the place is massively energy

This is the biggest problem. I rented an apartment for two years in the Dallas Texas area, and you just need one anecdote to know the place is massively energy inefficient -- all the windows on my apartment were single glass pane. It gets freezing cold for two or three weeks in winter. It gets triple digit (fahrenheit) in the summer. A well insulated home is a must to save money on electricity. Add to the fact that I'm sure the only heating I had was resistive electricity heat from the electric air conditioning...