My acquaintance works as a demonstrator at trade shows. Because he is a freelance salesman, he never knows what product or service he will be toiling with from show to show. One time he could be pitching roofing and siding and another time, the latest in hair care products. It is certainly amazing how much he knows about odd industries… Recently, he has been toiling with numerous Heating, Ventilation, and A/C companies. These included everything from the typical central systems to alternative corn fed burners. I was certainly surprised to learn that people can be quite creative about how they heat and cool their homes. Some systems are even supplemented by solar panels that are installed on the roof. Solar and wind power are normally used as a secondary fuel source because they are not a constant. You also can use the ground as a way to heat and cool if you choose a geothermal system. An Heating, Ventilation, and A/C dealership can direct you to the best way to keep your apartment comfortable. It is consistently a superb idea to visit a apartment show if possible so that you can see for yourself the benefits and downfalls to each power source too. I feel I will ask my acquaintance how I can get a job doing what he does. I feel it would be a superb way to keep up with all the latest technology in just about every aspect of my life. In addition, if I am interested in the product I am pitching, maybe there will be an employee discount that I can take fortune of. That would make me enthusiastic too.