5 Best Generators For Sump Pumps 2022 – Reviews & Results

A sump pump is one of the key household appliances that keep your basement dry during the rainy and snowmelt season and prevent flooding. However, it needs a continuous electricity supply to operate. In extreme weather conditions like thunderstorms, the power outage issue is common. The extended power outage sessions can be dangerous as the water can pool in the sump pit leading to flooding in the basement.

Best Generator For Sump Pump

A backup power solution is crucial to ensure a stable and efficient operation of the pump whether it’s a battery backup or generator. If you wonder what is the best generator for sump pump, take a look at the review of the five best options. After checking various options on the market we have filtered out the options that stood best in terms of stable power output, fuel efficiency, ease of handling, and noise control. The generator you choose should be based on the sump pump’s electricity consumption.

5 Best Generator For Sump Pump

1. Champion Power Equipment 200961 Portable Inverter Generator

Best Overall

Champion Power Equipment



  • Starting Wattage: 2500 watt
  • Running Wattage: 2100-2500 watt
  • Noise Level: 53 dB
  • Weight: 39 lbs

Champion Power equipment dual fuel portable inverter generator has made its way to the top of the list for its incredible performance during extreme weather conditions. The best part of this generator is that it is ultra-portable and lightweight. It comes in a sturdy yet lightweight casing. It weighs only 39 pounds and is a perfect option for indoor and outdoor use.

The dual-fuel technology allows you to run the generator either with gasoline or propane. This feature is pretty helpful when you have a limited quantity of fuel available. The generator is powerful enough to operate sensitive and high-profile electronics with maximum efficiency. It has to start with a power rating of 25000 watts and it runs at power output rating of 1850 watts.

The stable power output maintains the smooth operation even during the extended power outage seasons and does not affect the performance of the pump or motor. An ultra-quiet operation is another perk of this portable inverter generator. The maximum noise rating of the unit for 23 ft is 57 dB. So, this is the best choice if your sump pump is installed near your bedroom or living room.

The unit offers a clean output and uses automotive-style outlets and a super handy dual port USB adaptor for ease of handling. Although its setup requirements are maximum it doesn’t offer a smooth start with the propane. Even though we followed the instructions provided in the user manual, it took more than 3 hours to bring everything down. Also, it lacks the low fuel indicator which is pretty disappointing.


  • Ultra-portable option
  • Smooth power supply
  • Excellent run time
  • Dual fuel support
  • Low noise levels


  • No low fuel indicator
  • Tough strat with propane

If you are looking for a portable unit for your basement sump pump power requirements, This generator by Champion Equipment is the best option you can have. The unit combines ultra-portable structure, low noise operation, and impressive run time of 16 hours under maximum load making it the best generator for sump pump.

2. Briggs & Stratton 30795 P4500 Inverter Generator

Best Overall

Briggs & Stratton 30795



  • Starting Wattage: 4500 watt
  • Running Wattage: 3700 watt
  • Noise Level: 55 dB
  • Weight: 114.8 lbs

Briggs & Stratton 30795 Inverter generator is one of the most powerful power backup solutions you can buy for your sump pump. With a start power rating of 4500 watts and a running power rating of 3700 watts, it ensures a stable and continuous power supply to the pump even under the maximum load. The generator is powerful enough to run multiple appliances at time. The stable and smooth power supply of the generator makes it perfect for sensitive electronics in tough conditions like thunderstorms.

Although it is a highly powered engine, its noise level is not very high. Even under the maximum load, the noise level is pretty acceptable. The maximum noise level it produces is 61 dB which is quite impressive. Fuel efficiency is another standout part of the generator. It offers a running time of 16 hours under 25% load. The generator comes with a multi-functional display panel giving you a quick look at the fuel level, power efficiency, and run time.

The generator is secured within the lightweight and sturdy housing. The built-in casters and telescoping handle make the unit highly maneuverable and super easy to use. Advanced safety features of the generator make it equally useful for indoor and outdoor use. It monitors the level of carbon monoxide and stops working if dangerous levels are in the environment.

Briggs & Stratton 30795 P4500 Inverter Generator

The quick electric start offers a seamless start making it equally useful for both indoor and outdoor applications. The only issue that we faced with this generator was the complex startup. It has a complex multi-stage setup process.  The battery also doesn’t offer a ready to go experience. The user manual is not pretty clear that further makes the process complex


  • Stable power output
  • Multifunctional LED display
  • Lightweight with built-in casters
  • Impressive fuel efficiency


  • Complex startings setup

Briggs & Stratton P4500 combines a stable power supply with a low noise setup and incredible fuel efficiency making it the best generator for sump pumps. The generator has an outstanding power output rating and premium grade safety features that ensure a stable power supply to the sump pump in the basement during the peak snow and rainy seasons.

3. DuroMax XP12000EH Generator

Best Overall

DuroMax XP12000EH Generator



  • Starting Wattage: 12000 watt
  • Running Wattage: 8500 watt
  • Noise Level: 74 dB
  • Weight: 224 lbs

Duromax XP12000EH generator is a giant garter to offer a power output of 12000 watts (max). This unit is not designed especially for pumps or small electronics, But can be solid power support for your pump in the basement. Since it is an ultra-powerful generator it can supply power to normal households and ensures a reliable performance during the long power outage sessions.

What makes this unit perfect for the most demanding applications is dual-fuel technology. It either works with propane gas or gasoline. This feature ensures that you are on the safe side in challenging weather conditions. The unit’s starting wattage is 12000 watts and its running wattage is 9700 watts which is quite impressive.

You can operate the generator at both 240V and 120V simultaneously that further enhances the versatility and functionality of this generator. With DuroMax MX2 technology you get the maximum power output from every receptacle. This generator is approved by CARB and EPA and promotes low emissions for a cleaner and greener environment. The low oil indicator gives you on-time reminders if the fuel is running out.

It includes a complete accessory set including cables, toolset, wrench, and many more for a ready-to-go experience. The most notable downside of this generator is its bulky profile and higher price tag. Since it is made for the needs of big households and industrial applications, it is really expensive.


  • DuroMax MX2 technology
  • Low oil indicator
  • CARB and EPA approved
  • Class-Leading Power output rating
  • Dual fuel technology


  • Heavy profile
  • Expensive

Duro Max XP12000EH generator is a perfect option if you live in low-lying areas where power outages are common. With a stable power output, safe power circuit technology, and sturdy metallic construction, it is the best generator for sump pump that you can buy in 2022.

4. WEN 56200i 2000-Watt Gas Powered Portable Inverter Generator

Best Overall

WEN 56200i 2000-Watt



  • Starting Wattage: 2000 watt
  • Running Wattage: 1600 watt
  • Noise Level: 53 dB
  • Weight: 48 lbs

WEN 56200i 2000-watt gas-powered generator is another solid option you can consider for your basement sump pump power support. This gas-powered generator is designed for the needs of industrial units like sump pumps and promises a stable power output even under the most demanding conditions. The 4-stroke engine of the generator is powerful enough to offer a starting power rating of around 2000w watts and running wattage of 1600 watts.

This is a top-rated and best-selling generator that works perfectly for sensitive applications like sump pumps. It is approved by EPA III and CRAB and produces cleaner power for a safe and secure experience. It will not affect the sensitive operating systems like sensors and alarms installed in the basement and ensure a stable operation even during extreme weather conditions like thunderstorms.

The ECO mode of the generator improves the power and fuel efficiency and reduces the overall energy costs under normal conditions. It is an intuitive control panel and you can control all its features with onboard controls. It weighs only 48 pounds while its built-in handle makes it pretty easy to transport and use. The noise rating for the generator is around 53 dB within a range of 25 ft, which is quite impressive considering its use in household applications.

WEN 56200i 2000-Watt Gas Powered Portable Inverter Generator

The overall performance of the unit is good but it has a tiring CRAB cleaning process. The gas accumulates in CRAB and it requires cleaning and maintenance on a monthly basis. It requires you to remove all the sides and gas units which is back-breaking and a time-consuming process. The unit is backed by a 2-year warranty and free lifetime technical support.


  • EPA III and CARB compliant
  • User-friendly ergonomics
  • Clean and stable power supply
  • Energy-efficient ECO mode


  • Challenging cleaning process

WEN 56200I 2200-watt gas-powered generator is a competitively priced yet powerful power backup solution you can buy for your sump pump. The stable and clean power output combined with portable design and ultra-quiet operation, is undoubtedly the best generator for sump pump.

5. Briggs & Stratton Q6500 Quiet Power Series Inverter Generator

Best Overall

Briggs & Stratton Q6500



  • Starting Wattage: 6500 watt
  • Running Wattage: 4500-5000 watt
  • Noise Level: 58 dB
  • Weight: 144 lbs

Briggs 7 Stratton Q6500 Quiet power series operation is an ultra-powerful unit with a class-leading power rating of 6500 watts. This is an expensive yet efficient unit that can power multiple appliances with a stable and super smooth power supply. It uses a 3600cc integrated engine that offers a starting rating of 6500 watts and running wattage between 4500-5000 watts.

The best part of this is that it is 60% quieter than the unit in this power rating range. The unit uses a sturdy steel frame and a shell that reduces the noise level up to significant levels. With incredible power efficiency, it offers a run time of 14 hours under maximum load. Although it has an incredible power output it is lightweight and compact. The built-in sturdy caster makes the unit highly maneuverable and portable.

The CO guard carbon monoxide detector automatically shuts off the generator when dangerous levels of CO are detected. It uses a telescoping handle that makes the generator pretty handy. The multiple outlets make it exceptionally versatile. Although it comes with an electric start option it did not work properly, especially in the winter season.


  • Class-leading power rating
  • Ultra-quiet operation
  • Stable power supply under max load
  • Compact and lightweight structure


  • Electric start doesn’t work
  • Expensive

Briggs & Stratton is a powerful unit that is equally suitable for indoor and outdoor applications. Its incredible starting wattage rating combined with quiet operation and compact design make it a perfect option for demanding sump pump systems in large residential industrial buildings.

How To Choose The Best Generator For Sump Pump?

The sump pump needs a specific wattage and power rating to ensure a smooth operation. Depending upon the requirements of your pump system installed in the system you need to consider various features of the generator. The guide will help you estimate the size and power output you need for your sump pump basement. Plus it discusses the other features of the sump pump.

How To Choose The Best Generator For Sump Pump
Infographic: How To Choose The Best Generator For Sump Pump

Size And Power Rating

The power rating of the generator depends upon the power rating of the sump pump that is installed in your basement. You can read all the information in the user manual on the pump’s housing. The features like horsepower, amperage, starting wattage, running wattage, etc. This information will help you estimate the required power rating of the generator. The running and starting wattage should be more than that of the sump pump requirement.

Also, you should consider the requirements of other appliances like cooling systems, alarms, and sensors in the system. The average power requirements of the generator vary between 1500 watts to 2200 watts. You can also buy giant generators with a 4000+ wattage rating to provide a power supply to other appliances like refrigerators and air conditioners along with the sump pump.

Noise Rating

Noise is one of the most crucial features you must consider while buying a generator. The operating noise of the generators can be tough during the night during power outage sessions. If the sump pump is installed near your bedroom, you must look for a generator with the lowest noise rating. The noise rating for portable inverter generators is between 50 dB within the range of 25 ft whichever is quite acceptable. However, if you consider a giant size generator to power your household you can expect a quiet operation.

Run Time

If you live in an area where power outages and blackouts are common, the run time is of prime importance. The average run time offered by a portable inverter is between 12 to 16 hours, which is sufficient to fulfill the needs of a normal household sump pump. Fuel-efficient generators can run for a longer time within a limited fuel capacity.

Safety Features

Sump pump systems are highly sensitive to voltage fluctuations, and you must look for a generator that offers a clean and stable power output. Sensitive systems like sensors, alarms, and motors can be dangerous due to imbalanced power output. Also, you must look for a built-in carbon monoxide detector that automatically stops the generator when dangerous levels of the gas are detected. Fuel indicator, run time indicator, and various operating modes are other features that you should consider for a safe and trouble-free operation.

Dual Fuel Mode

Dual fuel mode can be helpful as it gives you the freedom to operate the generator with the fuel option that is available in a particular situation. Also in case of challenging weather conditions, the generator may stop working with a particular fuel option. In this case, you have an option to shift to another fuel option. You can find both industrial-grade generators and inverter portables available in dual fuel options.


How big of a generator do I need for a sump pump?

It all depends upon the requirements of the power needs of the sump pump system. A sump installed in a normal household requires a power output of between 1500-2100 watts. A portable Inverter generator with a wattage rating of 200+ watts will work for these applications. For industrial or large residential sump pumps you should look for ultra-powerful generators with a 4000+watt power rating.

What kind of generator do I need to run a sump pump?

A portable inverter generator can easily power your sump pump for more than 10 hours. However, if you want to power more than one appliance like a refrigerator or air conditioner you may consider a giant gas-powered generator with a 5000+ watt power rating.

Wrapping Up

We can safely conclude that a reliable power supply to the sump pump is crucial to minimize the chances of flooding. All the generators reviewed above are tested for their quality and performance but our top picks from the list are:

It is highly recommended to go for inverter portable generators for the sump pumps to ensure a stable power supply in demanding conditions. These units are highly fuel-efficient and are pretty easy to handle in the sump pit environments.

We participate in affiliate programs to help us fund MechanicsGear. Some of the links in this website are affiliate links, which means that if you purchase a product using our link, we will earn a small commission. Don’t worry! This comes at no additional cost to you, and we will never base our reviews on whether or not we earn a commission off of a product. With that said, if you find our review helpful and decide to purchase an item we review, we would be very appreciative if you use our links to do so. It will help us bring you more awesome content in the future!

Leave a Comment