> HVAC systems represent about 4% of US power consumption and their share is rising, And here is a real issue. We use a lot of electricity for air conditioning

> HVAC systems represent about 4% of US power consumption and their share is rising, And here is a real issue. We use a lot of electricity for air conditioning. Temperatures are rising which means more air conditioning. More air conditioning means more power, which means more fossil fuels. More fossil fuels means more warming. sigh. We could save a fortune just by being smarter about new construction, but alas, cookie-cutter home builders and apartment companies just want the cheapest thing they can sell/rent. My bedroom closet at my apartment isn't even insulated, in the winter it gets as low as about 40F and Tuesday with it 92F outside my closet was 86F so opening it twice a day dumps a bunch of heat/cold into my room. The on-suite bathroom on the same wall is somewhat insulated but not as much as the other rooms, they skimped on 2-3 widths of insulation to save 20-30$ per corner of each building because, you know, they don't pay the electric bill.