Here in Malaysia, we do not need heating systems as the sun shines the whole year round. If anything, we need electric fans and air-conditioners. Well, that's for another story.
If you're in a temperate climate with extreme Winters, Furnaces would be the thing you would need to keep you warm and comfortable during those cold Winter months. If you're looking for good articles and news about furnaces, why not visit 123furnace.com. It is a site about furnaces and alternative furnace/heating methods available, to provide you enough information to make an informed choice. It also has news on furnace filters and advice on the do's and don'ts.