What Size Generator Do I Need For Sump Pump?

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What Size Generator Do I Need For Sump Pump

Requirement By Sump Pumps:

The sump pump requires an energy backup for emergency shortfalls. The power outage has led people to seek alternatives for power solutions in case of uncertain electricity failures which can have disastrous effects.

So, having a generator at hand when the power goes out is a necessity for a homeowner to run a sump pump. Here is the question one potential buyer might ask himself what size generator do I need for the sump pump?

The answer here provided a detailed overview and perfect suitability for your requirements of the generator. 

What Size Generator Do I Need For the Sump Pump?

A 2000-watt generator is an initially smaller size for powering a sump pump. However, the better option relies on the size of a 3500-watt generator which doesn’t stress out the generator while working and is able to power other things in the home as well.

Types Of Sump Pumps:

The size of the sump pump can either be 1/3 HP or ½ HP. ½ HP sump pump requires 600-800 watts for running and 1300-1600 watts as starting watts. The 1/3 size sump pump requires 800-1000 watts rated and 1500-2150 watts starting wattage for the unit. The startup wattage of any device is higher than its required running wattage as it regulates the operation in the first few seconds and drops out the wattage once run continuously.


For both sized sump pump to power, the best suitable generator is the Champion 4375 portable generator that allows the working for 12 hours with 50 percent load on the tank, while acquiring starting wattage of 4375 watts and rated wattage of 3500 watts.

This extends your option to power other devices as well. The decibel level of the generator is about 68 dba from 23 feet apart. The portability of the generator allows its safe storage with low maintenance quality which provides peace of mind.

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