I am a big believer in installing an ERV in every home. I even think it should be minimum code as it is the most effective way to ensure balanced air exchange and energy efficiency. I got a chance to see Panasonic North America's new Intelli-Balance® 100 - Any Climate ERV at the International Builder Show and this product is brilliant. It comes in a hardwired model which means you don't need to have a furnace to install this in your home which makes it great for sunrooms, home additions, or even