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Sump pumps are essential for homeowners who want to protect their homes from water damage. They remove excess water from your basement, crawl space, or other low-lying areas of your home. However, choosing the right size sump pump can be tricky. If you choose a pump that is too small, it won’t be able to handle the amount of water in your space, and if you choose a pump that is too big, it will waste energy and money. In this blog post, we’ll help you determine what size sump pump you need for your home.

Measure the size of your sump pit

The first step in choosing the right size sump pump is to measure the size of your sump pit. By doing this, you’ll be able to determine the maximum amount of water that can accumulate in your pit. Once you have this information, you can choose a sump pump with a flow rate that matches this amount.

Consider the type of water in your area

The type of water in your area can also influence the size of pump you need. If you live in an area with heavy rainfall or frequent flooding, you may need a more powerful pump than someone who lives in a drier climate. Additionally, if you live in an area with a high water table, you may need a larger pump to handle the increased volume of water.

Calculate the head pressure

Head pressure is the force required to move water through pipes and hoses. In the context of sump pumps, head pressure refers to the vertical distance between the sump pit and the outlet pipe. The higher the head pressure, the more powerful the pump will need to be to move water to the outlet. Professionals can help calculate this based on your specific setup.

Look at the flow rate

The flow rate of a sump pump refers to the amount of water it can move per minute. To determine the flow rate you need for your home, consider the amount of water that could accumulate in your sump pit in a single minute. A larger flow rate means your sump pump can handle more water per minute, which is important for homes that are at risk of flooding or water damage.

Consult with a professional plumber

While these steps can help you determine the size of sump pump you need, the process can still be complicated and overwhelming. If you’re not sure what size sump pump is right for your home, consult with a professional plumber. They can evaluate your unique situation and recommend the right pump for you.


Choosing the right size sump pump for your home is an important decision that can help you avoid costly damage to your property. By measuring the size of your sump pit, considering the type of water in your area, calculating the head pressure, looking at the flow rate, and consulting with a professional, you can ensure that you choose the right size sump pump for your needs. Remember, it’s always better to choose a pump that is slightly larger than what you need to ensure it can handle unexpected situations. Contact your local plumbing company today to learn more about sump pumps and how they can protect your home.