Here’s our step-by-step in floor heating installation, on of our best shop heating ideas. This radiant heating system is very efficient, and creates a nice even heat for the man cave. Hydronic radiant floor heating is great for garages, because the temperature will quickly return to the desired temperature after opening and closing garage doors. Hydronic heating has been around for decades, and was once a common form of heat in the 1800s and 1900s.