13 June

Running the reverse-cycle units 24 hours a day activates the thermal mass of the building. In winter the heat produced is stored in the walls and other materials of the house, where it can release back into the house. In summer the cooling cools the same materials, preventing heat accumulated from outside being released into the house. Overall it thermoregulates the home. Homeostasis. Keeping a steady temperature, rather than cycling between extremes, which uses much more energy. Many only turn the air con on when they want to heat or cool. They can do that, but that’s not how they work the most efficiently. Also better for your body, which has to thermoregulate to keep you alive, as Michael Mosley tragically discovered. Living in a building with a steady temperature makes that job a lot easier for your body, so you’re healthier. No other form of heating/cooling (really temperature regulation) achieves this like heat pumps. Wood fires vastly overheat a space, putting stresses on your own thermoregulation in your body. Running gas heating 24 hours day will send you bankrupt. Running heat pumps constantly actually makes them cheaper to run. Again, it’s a wonder of the world. Like EVs. Science and engineering kinda rock. Humans are too stupid to use them.