When it comes to saving on energy, at least as far as fossil fuel powered appliances go, there are a few forms of alternative systems. First, there are passive systems that maximize the ability to heat or cool a building by constructing residences and facilities with such things as white roofs to reflect the sun’s intense rays… This pretty much means that it takes less energy to cool the building because it doesn’t heat up as much to begin with. These buildings are also insulated so much better to keep in the sizzling or cool air with better efficiency. Then, there are active systems. These choices happen to be more green and they use either solar, geothermal, or hydro power to operate the HVAC machines. Active systems are genuinely efficient and do not demand the use of fossil fuels thereby are better for the world overall. If you live in hot arid weather conditions you may want to use a combination of these things. By using the construction techniques of a passive system and the active power sources you may be able to get by without having to use fossil fuels. With the serious problems of Global Warming and the ever increasing population it is pressing to try and conserve where we are able to. If every person took little steps to save energy in a single way or another all of us could reverse some of the destruction that has been done to our planet. Even a self-explanatory thing like planting trees to shade your residence and keep it cool can make a pretty extreme difference over time! At the least you should talk to your HVAC machine dealer because they will be able to deliver you wonderful energy saving tips that most people can benefit from.