My good friend who recently bought a new home. It’s an elegant home with a huge amount of land. This is the minute home she has bought in her life & she was telling me that she plans to be a lot more frugal & vigilant when it comes to HVAC. At her old place, she had complained constantly about how high the bills were. Just about a year in, she started returning to her ancient ways of cranking up the heating while in the Winter season & blasting the air conditioning while in the Summer. She had begun letting me know about her weekly payments. I suggested upgrading her Heating & A/C system & getting a new, energy efficient furnace & air conditioning although she told me she didn’t have that kind of cash to spend right now. After thinking about it, I suggested that she look into getting a smart control unit. She had literally never heard of a smart control unit before. I explained to her that while she was away from the house, she could set the smart control unit to stay at a more moderate temperature and the time that she got home it would turn on the air conditioning or furnace to make her nice and comfortable. She took me up on it, & after 3 months she had saved enough money on hand to replace her Heating & A/C system to include an energy efficient furnace & air conditioning. I was so impressed with her results that I ended up taking my own advice & invested in a smart control unit & eventually an replaced furnace & air conditioning for myself. I absolutely should have done this a long time ago!