Portable Generators
The right generator size depends entirely on what you plan to run, not on getting the biggest number you can afford. Add up the running watts of your essential appliances, then add the highest single starting-watt surge (usually a refrigerator or well pump) to find your minimum requirement.
Inverter generators produce cleaner, more stable power that's safe for sensitive electronics and are quieter — ideal for camping, RVs, or backing up a few circuits. Conventional generators deliver more power per dollar and are the better choice for whole-home backup or job-site use where clean sine-wave power matters less.
What to look for
Running watts vs. starting watts
Running watts is what an appliance needs continuously; starting watts is the brief surge many motors need to kick on — often 2–3x the running figure. Size your generator to the sum of running watts plus your largest single surge.
Never run a generator indoors or in a garage
Portable generators produce carbon monoxide and must run outdoors, well away from windows and doors, regardless of ventilation.
A transfer switch is the safe way to power a home
Backfeeding a house through an outlet is dangerous and illegal in most areas. A transfer switch, installed by an electrician, lets a portable generator safely power selected circuits.