Best Sump Pumps For Crawl Space

A sump pump is a must-have homeowner tool that helps you eliminate excess moisture and protects against flooding. If you currently don't have one, then it's something you'll quickly regret when you need it. Sump pumps can potentially save you thousands of dollars in water damage repairs making them well worth their cost. 

How Do Sump Pumps Work?

Sump pumps are for the most part used in home basements and crawl spaces. Water will drain into a constructed hole pit around the basement where a sump pump is often placed.

The vast majority of them have an automatic flotation system that will activate when the water reaches a certain level. The water it collects is then pushed out through a hose outside. While there are different types of sump pumps, they all have the same similar function.

They are the type of device you need when dealing with flood water.

Who Installs Sump Pumps?

Sump pump installation isn't the most straightforward thing to do. If you're pretty handy with tools, then you might be able to figure out how to install a sump pump yourself. If you're not too confident with your abilities or your house doesn't already have a constructed pit then you can always hire a professional contractor to install one for you. 

Best Crawl Space Sump Pumps 2020 Reviews

Here are our reviews on the 7 best sump pumps for your crawl space.

Liberty Pumps 287 Liberty

With a 37-Feet maximum shut-off head combined with ¾ inch capacity of solids-handling, this 287 sump pump by Liberty pumps is ideal for mid to low-range pump applications. Designed for sump pits of 10'' and above in diameter, it features a VMF switch that's magnetically operated.

This 10 x 10 x 13'' pump has an efficient design that saves up to 40% electrical usage. Weighs just 19.46lbs, the 289 series sump pump offers a flow rate of 67 GPM or 4020 gallons per hour. It's excellent for mound systems, high sump output, transfer of liquid waste, and STEP systems.

No needs to break seals, thanks to the 10-foot long power cord for quick disconnect and replacement within seconds. Not only has the pump offered superior performance, but the hermetically-sealed motor also has thermal protection. It features sturdy housing of cast iron with a rotor shaft of stainless steel and steel bottom screen.


  • ½ HP high-output motor
  • Lubricated bearings
  • Reduces electric usage
  • 37-foot maximum head


  • VMF magnet loses hold over time

WAYNE CDU800 Submersible Cast Iron and Steel Sump Pump

The Wayne CDU800 has 1/2 HP and is constructed with durable cast iron. It's a submersible sump pump and it's also one of the best sump pump on the market. With a high flow rate of 5100 GPH, it offers top-notch performance for high risk flood areas. Unlike others pump out there, no weep hole is needed for it when you use a check valve. The Wayne CDU800 is quiet and can move a lot of water efficiently. It's up there as one of the best sump pump options. 

Zoeller M53 Mighty-mate Submersible Sump Pump

The Zoeller M53 can act as a pump for septic tanks and residential sump pits. With it's strong casing, it's built to last and can run for multiple hours every day non-stop for 1-2 years. If you're not using it that often then it can potentially last more than 5+ years. This sump pump is able to move 1/2 inch solids.

If you buy it don't forget to drill a relief hole according to the instruction sheet. The Zoeller M53 model works quickly, emptying any sump pit in mere seconds. With the ability to pump 43 gallons per minute and a max head rating of 19 feet, you won't regret buying it. 

Little Giant GIDDS-521252 Automatic Sump Pump

The Little Giant GIDDS-521252 is 1/3 horsepower pump and has a rating of 2760 GPH. With its design it will start pumping when the water levels reach between 7 - 10 inches and automatically turns itself off at 1 - 4 inches. It works well when dealing with a lot of water so it's a must-have in areas prone to flooding or a lot of rain. You can trust this excellent choice for your crawl space. 


The FLUENTPOWER sump pump offers reliable performance with its ¾ HP motor with a flow rate of 3300GP. It has a 1.25" discharge size and a 27ft maximum head. This portable submersible pump is ideal for water drainage or removal from fish ponds, garden pools, and swimming pools. 

The pump comes with multiple hose connectors that include a 1.5" male thread, ¾'' GHT, and NPT1. An automatic float switch starts with a 30cm minimum water level, but you can also operate it manually by adjusting the cord.

Unlike standard mechanical seals, this pump features an oil-sealed chamber for better durability and more extended performance in crawl spaces. Thanks to thermal protection, it gives peace of mind that the pump won't explode or burn when overheated. The sturdy metal casing being rust-resistant also adds to the durability. Besides, its 26.2ft long cable cord allows a 7m submersible depth.


  • Sealed oil chamber
  • Flat base
  • Stainless steel casing
  • Automatic float switch


  • Works with clean water only; 5mm solid passage

WaterAce WA50SAS Sump Pump

Ideal for preventing basement floods in your house, the WA50SAS by WaterAce uses a ½ hp PSC motor that's more efficient and draws fewer amps. When it comes to head performance and flow, the WaterAce pump easily beats the competition. It's rated as 'Continuous duty' that means it works continually when needed during water issues. 

The WaterAce pump is created with heavy-duty and durable cast-iron with a thermoplastic volute. For safety, there's a built-in overload protection feature for the motor. The vortex impeller has a non-clogging thermoplastic design that allows ½'' solids passage through it.

The vertical automatic switch design offers easy and simple operation for your household use. Guard-mounted floating switch with stainless steel arm lets this pump to operate at a minimum of 11" basin diameter. The advanced-designed float is constructed from a strong plastic POM, while reinforcing rib and composite rod offers level control via the low friction guide.

Apart from being good for crawl spaces, it's also a good option if you're looking for a basement sump pump.


  • Cast iron durable construction
  • Built-in thermal protection
  • PSC ½ HP motor
  • 5100 GPH


  • No battery backup 

Schraiberpump MSC1000 Sump pump

Unlike a standard sump pump with low water pressure, this MSC pump has a 49psi high-water pressure. Engineered to drain out any standing water, it's ideal for use in flooded home basements, irrigation, farm use, fountains, swimming pools, and other water-transfer purposes.

The pump has a 1.5 HP motor and 113' head to install in an 11'' diameter sump basin and allows it to move an impressive 24 gallons per minute or 1440 gallons per hour. The 6.5 x 7.5 x 14'' dimensions make it perfect to fit small openings and reduced spaces.

NPT discharge makes it compatible with standard plumbing for simple, trouble-free installation. High-quality construction is evident from the sturdy stainless steel casing, thermoplastic float, and copper winding.

This offers excellent durability even when repeatedly submerged in water. Moreover, this pump's thermally protected oil-filled motor prevents overheating. A 2-year warranty backs it.


  • Automatic float switch
  • 49psi high-pressure
  • Small yet durable frame
  • 5'' HP motor


  • For clean water only

Just like sump pumps, one other way to save on potential water damage issues caused by mold due to excessive moisture is by using high quality exhaust fans in your bathrooms

About the author 

Ryan Thompson is a residential and commercial plumber from Miami, Florida. He has over 20+ years of plumbing experience. He is also a huge DIY enthusiast who does all types of improvement projects around the house.

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