best sump pump for basement
Daniel Johnston
Updated on June 16, 2026
For most average-sized homes in areas with average water tables, a 1/3 HP sump pump should be sufficient. Typically, 1/3 HP pumps can handle 7′ – 10′ vertical lifts from the sump pit if they have one 90-degree elbow and a horizontal pipe run between 3 feet and 25 feet.
What size sump pump do I need for my basement?
There is no “correct” size. The horsepower requirement for a house is determined by the area of drainage connected to the sump, the depth to groundwater, the depth of the basement and many other factors. A 1/3 horsepower (hp) pump is satisfactory for most houses, but a 1/2 hp pump doesn’t cost that much more.
What is the best horsepower for a sump pump?
How to Choose Horsepower
For most homes without too many water problems, a 1/3 horsepower sump pump is the standard. For basements with heavier flooding, we recommend a 1/2 horsepower pump which can remove about 3,000 gallons of water per hour.If you’re on a budget, a 1/4 horsepower pump will work.
Can a sump pump be too powerful?
You don’t want a pump that is either too small or too powerful. If the pump is too small, it won’t be able to keep up with water flowing into the basin. If the pump is too powerful, it will “short cycle.” This means the pump will start and stop frequently, which can cause premature pump failure.
How far can a 1/2 HP sump pump push water?
A 1/2 HP sump pump can handle 7 to 10 feet vertical lift off the sump pump, a 90-degree elbow and a horizontal pipe running between 3 and 25 feet.
What is the difference between 1/2 hp and 3/4 hp water pump?
Generally, ½ hp pumps have 10 GPM, ideal for average houses. While ¾ hp pumps can go as high as 13 GPM. If you need a large supply of water, going with a ¾ hp pump is the way to go.
Can a sump pump be fully submerged?
Sump pumps come in two types: Pedestal and submersible. Only one can be completely submerged in water. If you have a serious water issue from time to time, you should know which would work best so that you don’t put yourself or your family in danger.
Can you drain a dehumidifier into a sump pump?
Depending on the model of the dehumidifier, the drainage portion of the machine can be connected to the sump pump with either a small tube or preinstalled item. This allows the dehumidifier to constantly empty into the sump pump, meaning homeowners would not have to empty it at all.
How long do Zoeller sump pumps last?
Our favorite buy-it-for-life sump pump is the Zoeller M267; it moves water more quickly than almost any other pump on the market and it’ll do so for a good 10-20 years, but it also costs a cool $300.
How many years does a sump pump last?
How Long Does A Sump Pump Last On Average? Like other appliances and equipment in your home, your sump pump won’t last forever. Averaging about 10 years, you might not notice your sump pump has malfunctioned until it has stopped working.
What is the difference between a submersible pump and a sump pump?
The two main types of sump pumps are submersible and pedestal sump pumps. Like the name, a submersible pump is designed be submerged in water. The pedestal pump sits in the sump pit, but the motor is not designed to get wet so it sits outside the pit.
Are cast iron or stainless steel sump pumps better?
Stainless steel has anti-corrosion properties, while cast iron maximizes cooling ability to better distribute heat from the motor. The interior of a sump pump is just as important.
What size sump do I need?
Choosing The Right Sump
The sump should be no less than 25% of your tank’s total water volume, the bigger the better. The sump needs to fit inside your tank stand or proposed sump location, check overall dimensions.
Are aluminum sump pumps good?
We think it’s a decent choice, but it’s the second best material for your sump pump. From a plumber’s perspective, baffled aluminum is by far the best. The baffles, or cooling fins, provide the pump with extra durability and increase its surface area and ability to cool. Unlike cast iron, aluminum will never rust.
Why does sump pump run when it’s not raining?
The most common reason for your sump pumps keeps running while it is not raining is an increase in groundwater. Groundwater can come from many sources like nearby rivers or lakes, a broken pipe or nearby construction.
How often should my sump pump run during rain?
To answer the question simply, a sump pump should only run whenever it is needed. In other words, it should only run whenever a certain water level is met. Though this isn’t a very direct answer, it is the most accurate one. If you live in an area that rains a lot, your sump pump should kick on pretty often.
Is it normal for a sump pump to run every 3 minutes?
It is not normal for a sump pump to run constantly. If your sump pump runs every minute and you are not experiencing a large increase in the water table in your area, then this points to something being wrong with your pump.