A generac generator can be a great investment for your house and your family, this is an even better investment when you live in an area that is prone to power outages. One big aspect to think about in your buying decision is the power output that the generator can generate. Too little and the generator could have issues generating enough power for items such as heating, well pumps, refrigerators and other high-energy users, that could end up causing damage to the generator along with electrical equipment. On the other hand, if you buy a standby generator that is too large for your needs it will increase the purchase price , fuel consumption and maintenance. Assess some knowledge of what your home’s power requirements before making a purchase.Make a list of all the systems and appliances in your home that you want to use during a power outage. Start with the key systems that affect your entire home: heating, air conditioning, well pumps, sump pumps, security systems, etc.Go into each room in your home and then tally up a list of the appliances you find. Begin with the kitchen, this has more of the larger appliances: refrigerators, freezers, ovens and electric ranges. List any small appliances: televisions, radios, and such that you will want to use in each room. What are the lighting requirements of each room? These will help decide your power needs a little bit.