You must read this book if you own your home before beginning HVAC work. Sadly I made the mistake of doing my HVAC work BEFORE I read this book but luckily I was not too far off the mark. Most HVAC professionals sadly do not actually know the "whys" of what they are doing and simply offer cookie cutter solutions that do not fit what your house needs – especially an existing home.

Things to remember - If you want to do anything, ensure you also insulate your home! Ensure there are no leaks in or out of the home. Otherwise, all of the other work will have to use more energy due to leaks of air. - A ductless mini split is highly recommended to condition air around your homes - A ventilated dehumidifier is highly recommended to bring in fresh air & dehumidify it - Ensure you always run the ventilator in the bathroom / kitchen when you are using them - Water moisture is the #1 villain and try to not have temperature differences in surfaces that will cause moisture to develop - A manifold is a way to send hot water through a smaller plastic pipe such that less water looses heat as it stays in the piping - Try to prevent thermal bridges to ensure home is fully insulated