There has been plenty to witness and experience over the 75 years that I have been alive. Lots of changes have happened over the course of the past 75 years. When I was born, residential HVAC as we know it didn’t really even exist. There were heating units and there were fans for the summer. Recently, an HVAC experience at one of my children’s home really brought that all back to me. My oldest built a house now that her youngest is off to college. The house is really well thought out and quite sustainable. To that end, the heating and cooling equipment is also state of the art HVAC technology that looks to be very efficient. My daughter’s new home uses a geothermal heat pump to both heat and cool the house. A geo heat pump uses a long tube buried under the ground to extract heating and cooling energy. This HVAC technology uses the near constant temperature of the earth as a most consistent source of heating and cooling energy. While more expensive on the front end, the geothermal heat pump will provide significant heating and cooling savings for the next 30 plus years. What blew me away and took me back to my youth was the radiant floor heating. We had radiant heat from a boiler when I was a little girl and that radiant heat is the most comfortable I’ve ever felt. The fact that the heat comes up from the floor is even better than the radiators we had when I was growing up. It’s amazing how things come full circle.