Air filters in your heating system should be changed every month. This is one of the most important things you can do to support your heating systems and the air quality in your home. The same day the filter is replaced is also a good time to vacuum off your air vents. This keeps them clean and allows warm air to flow freely, easing temperature regulation throughout the home. For heating solutions in Penetang, Midland, and the surrounding area contact Garthside Ltd.! www.penetang.com/garthside