Never connect generators to your internal wiring. The reverse flow of electricity or "backflow" can injure an unsuspecting utility worker. For extra safety, install a transfer switch that cuts power to your home from the utility pole and switches it to your generator. Have an adequate supply of fuel for your generator and keep combustible materials like gasoline cans away from heat sources. Always fill the generator with fuel in a well-ventilated area while the generator is turned off. Never run your generator indoors or in a poorly ventilated area such as a garage. Generators, like all other engines, exhaust carbon monoxide gas, which can be deadly. Use the appropriate sized power cords to carry the electric load. Overloaded cords can overheat and cause fires. Never run generator cords under rugs or carpets where heat might build up or damage to a cord could go unnoticed.
Run your air conditioner for a few minutes in the spring, before you need it. If you wait until the first hot day to discover is isn’t working, you’ll find yourself on a waiting list, sweltering sometimes for days before an air conditioning specialist can come to fix it.