Solar space heating systems are an effective and excellent way to reduce costly energy bills during your heating season. Solar home heating system works alongside your current heating system to use the sun's energy to reduce your consumption of oil, propane, or other fossil fuels. If the solar system cannot provide adequate space heating, an auxiliary or back-up system like gas heater provides the additional heat. Traditionally used with solar evacuated tube collectors, these systems work to provide free, solar heating for your home throughout your entire heating system.