6 Best Crawl Space Sump Pump Choices. 2024 Buyers Guide

Right after I was hired by the water and sewer department of a small town, they had me check the water meter in a crawl space that was one foot tall. Nobody else was thin enough to slide the 30 feet under the house and then slide backwards to get out. That house would have needed a submersible crawl space sump pump instead of a pedestal sump pump.

If your crawl space is tall enough to easily move around in, then you might consider buying a pedestal sump pump. They can be quite inexpensive compared to submersible sump pumps. Although don’t expect them to last as long.

That is because insects and high humidity condensing on the motor coils could burn out the motor. Yes, you can buy Totally Enclosed Fan Cooled (TEFC) motors if you want to buy very expensive commercial/industrial pumps.

Which is why I personally advise to buy a submersible crawl space sump pump. However, if you want to check out the best pedestal crawl space sump pumps – read my article.

6 Best crawl space sump pump choices.
6 Best crawl space sump pump choices.

6 Best Crawl Space Sump Pump Comparisons

Below are six highly rated submersible sump pumps. Pick the pump that has the flow rate needed and the price you can afford. A secondary consideration is that a pump with a lower running amp rate will cost less to operate each month.

K2 Pumps SPA03301VDK, 1/3HP Cast Aluminum Sump Pump w/Direct-in Vertical Switch
BOMGIE 1/3HP Sump Pump Submersible 2510GPH, Vertical Float Switch Automatic Utility Pumps for Clean/Dirty Water Pump Thermal Protector for Basement Pool Draining, Max. Head 26 FT
Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Liberty Pumps 237-2 Pump
Zoeller Pro Series 1052 w/ Non-Clogging Vortex Impeller, Moves 48 Gallons Per Minute, 1/3HP 115-Volt Cast Iron Submersible Sump Pump
Liberty Pumps S38 Wide Angle Float 1/3 HP Builders Series Submersible Sump Pump
K2 Pumps SPA03301VDK, 1/3HP Cast Aluminum Sump Pump w/Direct-in Vertical Switch
BOMGIE 1/3HP Sump Pump Submersible 2510GPH, Vertical Float Switch Automatic Utility Pumps for Clean/Dirty Water Pump Thermal Protector for Basement Pool Draining, Max. Head 26 FT
Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Liberty Pumps 237-2 Pump
Zoeller Pro Series 1052 w/ Non-Clogging Vortex Impeller, Moves 48 Gallons Per Minute, 1/3HP 115-Volt Cast Iron Submersible Sump Pump
Liberty Pumps S38 Wide Angle Float 1/3 HP Builders Series Submersible Sump Pump
$92.78
$116.99
$132.00
$259.13
$208.80
$176.77
Metal or Plastic?
Cast Aluminum
Plastic
Cast Iron
Aluminum
Cast iron
Cast Iron motor plate
Maximum Gallons Per Hour
3,600
2,980 Implied from tethered pump
2,760
2,640
2,880
2,700
Gallons Per Hour at 5 Feet
3,400
N/A
2,160
2,220
2,580
2,520
Gallons Per Hour at 10 Feet
3,000
2,600 Implied from tethered pump
1,800
1,800
2,040
2,040
Gallons Per Hour at 15 Feet
2,500
2,500 Implied from tethered pump
1,500
1,080
1,140
1,620
Gallons Per Hour at 20 Feet
1,900
1,650 Implied from tethered pump
720
240
N/A
900
Running Amps
7.6
4.6
4.1
5.2
6.8
6.5
Float Switch Type
Vertical
Vertical
Vertical
Vertical magnetic
Vertical snap action
Tethered
K2 Pumps SPA03301VDK, 1/3HP Cast Aluminum Sump Pump w/Direct-in Vertical Switch
K2 Pumps SPA03301VDK, 1/3HP Cast Aluminum Sump Pump w/Direct-in Vertical Switch
$92.78
Metal or Plastic?
Cast Aluminum
Maximum Gallons Per Hour
3,600
Gallons Per Hour at 5 Feet
3,400
Gallons Per Hour at 10 Feet
3,000
Gallons Per Hour at 15 Feet
2,500
Gallons Per Hour at 20 Feet
1,900
Running Amps
7.6
Float Switch Type
Vertical
BOMGIE 1/3HP Sump Pump Submersible 2510GPH, Vertical Float Switch Automatic Utility Pumps for Clean/Dirty Water Pump Thermal Protector for Basement Pool Draining, Max. Head 26 FT
BOMGIE 1/3HP Sump Pump Submersible 2510GPH, Vertical Float Switch Automatic Utility Pumps for Clean/Dirty Water Pump Thermal Protector for Basement Pool Draining, Max. Head 26 FT
$116.99
Metal or Plastic?
Plastic
Maximum Gallons Per Hour
2,980 Implied from tethered pump
Gallons Per Hour at 5 Feet
N/A
Gallons Per Hour at 10 Feet
2,600 Implied from tethered pump
Gallons Per Hour at 15 Feet
2,500 Implied from tethered pump
Gallons Per Hour at 20 Feet
1,650 Implied from tethered pump
Running Amps
4.6
Float Switch Type
Vertical
Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
$132.00
Metal or Plastic?
Cast Iron
Maximum Gallons Per Hour
2,760
Gallons Per Hour at 5 Feet
2,160
Gallons Per Hour at 10 Feet
1,800
Gallons Per Hour at 15 Feet
1,500
Gallons Per Hour at 20 Feet
720
Running Amps
4.1
Float Switch Type
Vertical
Liberty Pumps 237-2 Pump
Liberty Pumps 237-2 Pump
$259.13
Metal or Plastic?
Aluminum
Maximum Gallons Per Hour
2,640
Gallons Per Hour at 5 Feet
2,220
Gallons Per Hour at 10 Feet
1,800
Gallons Per Hour at 15 Feet
1,080
Gallons Per Hour at 20 Feet
240
Running Amps
5.2
Float Switch Type
Vertical magnetic
Zoeller Pro Series 1052 w/ Non-Clogging Vortex Impeller, Moves 48 Gallons Per Minute, 1/3HP 115-Volt Cast Iron Submersible Sump Pump
Zoeller Pro Series 1052 w/ Non-Clogging Vortex Impeller, Moves 48 Gallons Per Minute, 1/3HP 115-Volt Cast Iron Submersible Sump Pump
$208.80
Metal or Plastic?
Cast iron
Maximum Gallons Per Hour
2,880
Gallons Per Hour at 5 Feet
2,580
Gallons Per Hour at 10 Feet
2,040
Gallons Per Hour at 15 Feet
1,140
Gallons Per Hour at 20 Feet
N/A
Running Amps
6.8
Float Switch Type
Vertical snap action
Liberty Pumps S38 Wide Angle Float 1/3 HP Builders Series Submersible Sump Pump
Liberty Pumps S38 Wide Angle Float 1/3 HP Builders Series Submersible Sump Pump
$176.77
Metal or Plastic?
Cast Iron motor plate
Maximum Gallons Per Hour
2,700
Gallons Per Hour at 5 Feet
2,520
Gallons Per Hour at 10 Feet
2,040
Gallons Per Hour at 15 Feet
1,620
Gallons Per Hour at 20 Feet
900
Running Amps
6.5
Float Switch Type
Tethered

Crawl Space Sump Pump Introduction

Maintaining a dry and moisture-free crawl space is a crucial aspect of preserving the structural integrity of any building. Among the various tools used for this purpose, a crawl space sump pump plays a vital role in mitigating water-related issues. These specialized pumps effectively remove excess water, preventing the accumulation of moisture that can lead to mold, structural decay, and other detrimental consequences.

Understanding the significance of crawl space sump pumps and their installation is paramount in ensuring the long-term protection of any property.

Quick Tips:

  1. Regularly inspect your crawl space for any signs of moisture or water accumulation.
  2. Consider the specific needs of your crawl space when choosing a suitable sump pump.
  3. Ensure proper maintenance of your sump pump to guarantee its optimal functionality.

Understanding Crawl Spaces

Crawl spaces, commonly found in many buildings, serve as an intermediary area between the ground and the first floor. While they provide access to plumbing, electrical wiring, and HVAC systems, they are susceptible to accumulating moisture.

Inadequate moisture removal can result in the growth of mold, mildew, and structural degradation, jeopardizing the building’s general stability. Understanding the vulnerabilities associated with crawl spaces is essential in emphasizing the necessity of effective moisture control mechanisms.

Sale
K2 Pumps SPA03301VDK, 1/3HP Cast Aluminum Sump Pump w/Direct-in Vertical Switch
  • Constructed of epoxy-coated aluminum
  • Removes water at 3600 GPH at 0′ of lift
  • Direct-in vertical float switch will operate in basins 10″ in diameter or larger
  • Energy-efficient PSC oil-filled motor
  • Top suctions design filters debris and handles up to 1/4″ solids

The Need for Crawl Space Sump Pumps

Identifying the sources of moisture in crawl spaces is critical in comprehending the need for crawl space sump pumps. Factors such as groundwater seepage, heavy rainfall, and inadequate drainage systems contribute to the accumulation of stagnant water. This stagnant water not only poses health risks but also weakens the foundation of the building over time.

Crawl space sump pumps serve as a proactive solution to prevent water-related issues, ensuring a dry and secure environment within the crawl space.

Types of Crawl Space Sump Pumps

When considering crawl space sump pumps, it is essential to understand the distinctions between the available types. Submersible sump pumps are designed to operate underwater, while pedestal sump pumps place the motor above the sump pit.

Selecting the type that best meets the unique requirements of the crawl space is essential because each type has a different set of benefits and factors to take into account. Evaluating factors such as power consumption, space availability, and maintenance needs can aid in making an informed decision.

Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
  • 1/3 HP Sump pump moves up to 2,760 gallons per hour; pump will lift water up to 25′ of vertical height
  • Rugged cast iron construction; 10-foot cord length
  • Vertical float switch to automatically turn the pump on/off. Switch on and off point is 6 and 2 inches
  • 1-1/2 inch NPT discharge for high capacity pumping
  • Superior Pumps are Built to Last, engineered with quality components and are 100% factory tested

Pros and Cons: Submersible Sump Pump vs Pedestal Sump Pump

AspectSubmersible Sump PumpPedestal Sump Pump
InstallationTypically installed directly in the sump pit, submerged in water. Requires more effort for installation due to its location and weight.The motor is raised above the sump pit for easier to access for maintenance and repairs. Simpler installation process.
PerformanceMore efficient at pumping water, as they operate submerged and can handle higher flow rates. Available in ¼ HP to 4 HP.Only available in 1/3 HP and ½ HP
Space RequirementEasier to fit into short crawl spaces. Requires more space within the sump pit due to its size and design.Requires more verticle space because of its taller height. Takes up less space within the sump pit, allowing for more water storage capacity.
Noise LevelTends to be quieter during operation due to being submerged, reducing noise transmission.Typically, louder during operation as the motor is located above the waterline.
MaintenanceMore difficult to access for maintenance or repairs, often requiring removal from the sump pit.Easier to access for maintenance and repairs, as the motor is located above ground level.
DurabilityGenerally, have a shorter lifespan due to being constantly submerged in water, more prone to corrosion and wear.Longer lifespan if the exposed motor windings are kept clean and dry.
CostTypically, more expensive upfront due to higher efficiency and design complexity.Generally, more affordable upfront, but may incur higher maintenance costs over time.
ReliabilityOften considered more reliable due to their design and ability to handle higher flow rates.Slightly less reliable than submersible pumps, especially in high-flow situations.
Energy EfficiencyGenerally, larger motors are more energy-efficient due to their ability to handle higher flow rates with less effort.Some models can be less energy-efficient compared to submersible pumps.
SafetyCan pose electrical hazards if not properly installed or maintained due to submersion in water.Safer from an electrical standpoint as the motor is located above the waterline.
Liberty Pumps 237 sump pump, unt
288 Reviews
Liberty Pumps 237 sump pump, unt
  • 3/8-Inch solids handling
  • Pumps up to 37 GPM with a discharge head of 5-Foot
  • Maximum discharge head of 21-Foot
  • Efficient motor design reduces electrical usage by up to 40-percent
  • Includes a magnetically operated VMF switch for smaller pits down to a 10-Inch diameter

Installation and Maintenance of Crawl Space Sump Pumps

Proper installation and regular maintenance are crucial in ensuring the effective functionality of crawl space sump pumps. While using a step-by-step installation guide can make setup simpler, it’s also important to adhere to maintenance guidelines to prevent problems. Routine inspections, sump pit cleaning, and functional testing are some of the fundamental steps that should be taken to ensure the sump pump’s long-term effectiveness.

Advantages of Utilizing Crawl Space Sump Pumps

The utilization of crawl space sump pumps offers various benefits beyond moisture control. By effectively managing water accumulation, these pumps contribute to the prevention of mold and mildew growth, safeguarding the indoor air quality and overall well-being of the occupants. They are crucial in preserving the property’s structural integrity as well, lowering the possibility of long-term water damage and expensive repairs.

Best Practices for Crawl Space Maintenance

Implementing comprehensive measures for crawl space maintenance can significantly enhance the effectiveness of sump pumps in moisture control. In conjunction with installing sump pumps, employing strategies such as proper insulation, adequate ventilation, and sealing any potential entry points for moisture can reinforce the protection of the crawl space. Regular inspections, combined with timely upkeep and necessary repairs, are vital in preserving the integrity of the crawl space and the building as a whole.

Zoeller Pro Series 1052 w/ Non-Clogging Vortex Impeller, Moves 48 Gallons Per Minute, 1/3HP 115-Volt Cast Iron Submersible Sump Pump
  • Premium vertical switch fits into 10-in diameter sump basins.
  • Non-clogging vortex impeller removes lint and debris.
  • 1-1/2-in NPT discharge passes 3/8-in solids.
  • 48 GPM – High efficiency, overload protected, oil-filled motor.

Strengths and Weaknesses

Strengths of Crawl Space Sump Pumps:

  1. Moisture Control: Crawl space sump pumps effectively manage and remove excess water, preventing moisture-related issues such as mold and mildew growth.
  2. Property Protection: By preventing water accumulation, sump pumps help safeguard the structural integrity of the property, reducing the risk of water damage and potential costly repairs.
  3. Improved Air Quality: By controlling moisture levels, sump pumps contribute to maintaining a healthier indoor environment by preventing the development of harmful allergens and pollutants.
  4. Customizability: Various types and models of sump pumps are available, allowing property owners to choose the one that best fits the specific requirements of their crawl space.

Weaknesses of Crawl Space Sump Pumps:

  1. Maintenance Needs: Sump pumps require regular maintenance to ensure their proper functioning, including cleaning, testing, and potential repairs, which can add to the overall maintenance workload.
  2. Potential Malfunctions: Malfunctions, such as clogging or mechanical issues, can occur, especially in conditions where the pump is exposed to excessive debris or high water volumes, leading to temporary inefficiency and potential water-related problems.
  3. Installation Challenges: Improper installation can lead to operational issues, and installing certain types of sump pumps might require professional assistance, increasing the initial installation cost.
  4. Power Dependency: Sump pumps rely on electricity to function, which means they might not be effective during power outages unless equipped with a battery backup system, adding an extra layer of maintenance and potential cost.

Understanding these strengths and weaknesses helps property owners make informed decisions regarding the installation, maintenance, and usage of crawl space sump pumps, allowing them to implement suitable strategies for effective moisture management in their properties.

BOMGIE 1/3HP Sump Pump Submersible 2510GPH, Vertical Float Switch Automatic Utility Pumps for Clean/Dirty Water Pump Thermal Protector for Basement Pool Draining, Max. Head 26 FT
  • 【1/3HP POWERFUL SUMP PUMP】The BOMGIE submersible clean/dirty water pump delivers exceptional power, capable of moving up to 2510 gallons per hour. It efficiently handles draining tasks in significantly less time. With a maximum immersion depth of 22 ft and a maximum head of 26 ft, it tackles demanding situations. The 10ft power cord provides ample length for flexible use over longer distances.
  • 【Vertical Float Switch】The sump pump equipped with a float switch operates automatically based on water level changes. When the water level is low, the float switch droops and the pump shuts off automatically. Once the water reaches a sufficient level (approximately 10.23 in), the pump resumes operation.
  • 【TOP SUCTION STRAINER】Built-in top suction design effectively eliminates air locks and filters out debris, ensuring the pump working continuously. Featuring a round and stable chassis, along with a widened turbine flow channel, it excels in narrow pumping environments and is ideal for frequent pumping of limited amounts of water.
  • 【Convenient Design】With 3 different outlet diameters (3/4 inch, 1-1/4 inch, 1-1/2 inch), it adapts to various hose sizes based on the required flow rate. Remember, the larger the flow, the wider the outlet should be. This utility pump is equipped with a motor featuring a thermal overload protector. If the pump stops working, it could be due to the protector activating.
  • 【Wide Application】This small submersible sump water pump is ideal for basement drainage. It effectively tackles frequent basement flooding and dampness caused by a high water table above the foundation. The pump efficiently redirects water away from the house to a suitable location, such as a municipal storm drain or a dry well. Additionally, it is well-suited for applications like hot tubs and irrigation systems. Please note that this pump is designed for use in sump basins with a diameter of 14 inches or larger.
Richard Quick author at Best Sump Pumps
Richard Quick
Author at Best Sump Pumps

The first time I helped to install a drain tile and basement sump pump system was 1978.

Since then I have worked for a city water utility where I worked with and maintained pumps.

My rental properties and personal homes all needed sump pumps.

As a modular home dealer/builder, those new homes needed sump pumps.

I put that experience to good use by providing reliable, useful, and practical advice on buying, using, and maintaining sump pumps.

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