Generators are simply two machines in one unit. The first machine is the prime mover, which can be a gasoline, diesel or gas engine. The second machine is the alternator, which is driven by the prime mover to generate electrical energy. These two machines are usually coupled together directly. They need to be serviced regularly to ensure they function flawlessly all the time. There are many firms that can offer generator service for both residential and commercial generators.
Only licensed contractors with plenty of experience in the industry should be accorded any special consideration. The reputation a firm has developed in the past after servicing numerous generators should be checked. This is because you would like to hire a trusted and reliable generator maintenance company. The fees charged for the service must also be compared because you want affordable services. Only insured and bonded firms should be given any consideration.