List your generator

GennySize sizes a generator for a whole house and then shows the models that actually fit — enough running watts, enough starting watts, and a 240 V outlet when the house needs one. If you make or sell generators and your model isn’t in our database, contact us and we’ll add it.

What we need

• Brand and exact model number
• Rated (running) and starting watts — and on which fuel
• 240 V outlet type (e.g. L14-30R or 14-50R), if it has one
• Automatic CO shutoff, if it has one
• A link to the official spec page or spec sheet — we only list numbers we can verify there

How listings work

• We list models on published specs. A model appears in a result only when it covers that house’s load.
• We don’t change anyone’s numbers, rank or wording for payment. Sponsored placements, if we ever offer them, are always labeled “Sponsored”.
• Found a mistake in an existing listing? Send the official source and we’ll correct it.