Homeowners install home generators for a variety of reasons. Often, they want protection for critical appliances to continue running when their power goes out, like during a storm or when squirrels and critters have damaged electrical equipment. For example, a generator ensures sump pumps work, avoiding flood damage. Moreover, just keeping the lights on will keep everyone calm and provide peace of mind. However, all this requires your generator to be in working order at all times, so it's ready when you least expect and need it, in case an unprotected electrical wire goes down. You need to routinely check and maintain your generator, in case it needs repair.