Long earlier than HGTV was a twinkle in its mom’s eye, one PBS member station lit the spark that became the flame of a wholly new style of television. If a crowd like that might be drawn to an excavation web site on a cold, snowy day, he thought, I can make a compelling show about home building. While they may be a little pricey, they do all the work of raising and lowering the temperature based mostly on when you’re home, making cost-cutting easy. They’re particularly helpful for anybody who unintentionally leaves their HVAC unit operating all day or …