WHAT SIZE GENERATOR DO I NEED FOR 2000 SQUARE FEET SECRETS

The selected machine should give continual voltage with the bottom probable THD (complete harmonic distortion) degree (Toggle child menuExpandMy fridge is 115 V/10 amps so I realize operating watts is 1150 …I am not positive How to define startup watts. Because my machine operating watts are much increased than average, I dont want to use amount