6017050 Evaporative Cooler Pump
4.5Editor score
Thermally protected from overheating
Fits specific MC18 and MC17 models
Easy installation with quick connect
In this guide
An evaporative cooler pump is the heart of any swamp cooler system, circulating water to the cooling pads for efficient heat exchange. Without a reliable pump, your unit cannot function properly, leading to hot days indoors. Choosing the right pump ensures consistent performance and longevity for your cooling equipment.
We compared ten leading evaporative cooler pumps based on motor quality, flow rate, submersibility, and safety features like thermal overload protection. Our analysis covers models from reputable brands like Dial and Little Giant as well as universal replacements. Each product was evaluated for ease of installation and overall build quality.
Each pick in this guide highlights specific strengths such as quiet operation, dry-burn protection, or high flow capacity. We provide detailed breakdowns to help you match a pump to your cooler size and installation needs. Please note that product availability and pricing can change frequently on online marketplaces.
Top 3 Picks for Best Evaporative Cooler Pump
UL11000 Evaporative Cooler Pump
4.6Editor score
100% Fully Submersible Design
Bottom-suction intake with debris guard
Ultra quiet with dry-burn protection
Little Giant CP3-115 Evaporative Cooler Pump
4.5Editor score
High flow 563 GPH capacity
Concentric fan-cooled motor
Includes 45 degree discharge adapter
Top 10 Best Evaporative Cooler Pump in 2026 Compared
This comparison table provides a side-by-side look at the key specifications and features of all ten evaporative cooler pumps reviewed in this guide. Use this to quickly identify the model that best fits your flow rate needs and cooler size.
ProductsSpecificationsEditor scorePrice
Best Budget
Dial UL7500 Pump
Noncorrosive motor housing
Built-in optional bleed-off port
Removable base plate design
4.5Editor score
Editor's Choice
Dial MC8500UL Pump
Thermal overload protection included
Corrosion-resistant shaft and bearings
Supports 4000 to 8500 CFM
4.3Editor score
Best Premium
Little Giant CP1-115
307 GPH flow at 1 ft
Snap-off volute plate for cleaning
One-piece corrosion resistant shaft
4.3Editor score
6017050 Pump
Fits MC18M and MC18V models
Quick connect panel disconnect
Thermally protected from overheating
4.5Editor score
6060050 Pump
Ultra quiet operation design
Dry burning protection included
Fits MC61M and M250 models
4.6Editor score
Dial 1387 Pump
Highly durable construction materials
Easy installation and handling
Compatible with UL15000 systems
4.5Editor score
UL11000 Pump
Universal fit for most coolers
Up to 660 GPH flow capacity
Raised motor for large coolers
4.6Editor score
UL7500 Pump
Fits systems up to 528 GPH
Compact design for tight spaces
Bottom-suction intake grille
5.0Editor score
Little Giant CP3-115
1/30 HP concentric motor
563 GPH flow at 1 ft
Fits 15000 to 21500 CFM
4.5Editor score
Little Giant 542005
1/30 HP heavy duty motor
Universal mounting configurations available
90 degree barbed elbow included
4.1Editor score
1. UL11000 – Best Overall Submersible Pump
UL11000 Evaporative Cooler Pump
Universal fit for most coolers
660 GPH maximum flow rate
100 percent submersible design
Dry-burn protection included
The UL11000 Evaporative Cooler Pump stands out as the top choice for its fully submersible design and versatile compatibility. With a 4.6 star rating, it offers peace of mind to homeowners who want a reliable pump that can sit completely underwater without damage. The pump handles up to 660 gallons per hour, making it suitable for most commercial and residential units.
Pros
- Fully submersible motor prevents burnout
- Bottom-suction intake filters debris effectively
- Ultra quiet operation for home use
- Includes three outlet adapters for fit
- Simple ten-minute installation process
Cons
- May require tank adjustment for fit
- Not compatible with all older models
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Key strengths include its bottom-suction intake with a built-in debris guard, which prevents sediment from clogging the system. Unlike traditional side-suction pumps, this design pulls water from the tank bottom where scale settles, extending pump life. The dry-burn protection feature automatically shuts off the motor if water runs low, preventing costly failures during summer heatwaves.
While highly effective, users should note that the dimensions are specific to 5.9 inches by 4.7 inches, which may require checking tank size before purchase. Some users might find the initial setup slightly different from older pump models they are accustomed to. However, the included adapters and straightforward steps make the transition smooth for most DIY users.
This pump is ideal for homeowners and DIY users who prioritize longevity and ease of use over extreme power. It is a reliable choice for restoring cool air without costly service calls. If you need a universal pump that combines safety features with quiet performance, this model delivers strong value.
Submersible Motor Safety
The 100% submersible design ensures the motor can sit fully underwater without risk of short circuits or damage, unlike traditional pumps that burn out when covered.
Debris Management
The orange base features a full-perimeter intake grille that pulls water from the bottom of the tank, trapping sediment and scale before it reaches your system.
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2. 6017050 – Best Budget Replacement Pump
6017050 Evaporative Cooler Pump
Fits MC18M MC18V models
Thermally protected from overheating
Quick connect panel disconnect
Durable components for reliability
The 6017050 Evaporative Cooler Pump is an excellent budget-friendly option for owners of specific cooler models like MC18M and MC18V. Rated at 4.5 stars, it offers robust components designed for long-lasting reliable operation. This pump is thermally protected from overheating when running dry, ensuring safety even in demanding conditions where water levels fluctuate.
Pros
- Affordable price point for replacement
- Fits specific common cooler models
- Thermal protection prevents dry burning
- Easy installation with quick connectors
- Includes quality assurance support
Cons
- Limited compatibility outside listed models
- Requires back case removal for install
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Installation is designed to be straightforward with a quick connect panel disconnect system. Users simply remove the back case and side pads, then disconnect the old pump to swap in the new one. The durable construction ensures the pump can handle daily cycling throughout the cooling season without premature failure.
The main limitation is its specific model compatibility, meaning it may not fit universal systems outside the listed range. However, for those with matching units, this pump offers a direct replacement that restores function without the cost of a professional repair. The customer support assurance adds a layer of confidence to the purchase.
This pump is perfect for budget-conscious buyers who need a direct fit for their existing equipment. It is a practical choice for restoring cool air quickly. If your cooler model matches this pump, it delivers strong value through reliability and ease of use.
Thermal Protection
The pump is thermally protected from overheating when running dry, which prevents motor damage and extends the lifespan of the unit.
Installation Ease
Installation involves removing the back case and disconnecting the quick connect panel, making it a quick swap for DIY users.
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3. Little Giant CP3-115 – Best High Flow Pump
Little Giant CP3-115
1/30 HP concentric motor
563 GPH flow at 1 ft
12 foot shutoff height
Fits 15000 to 21500 CFM
The Little Giant CP3-115 represents a premium option for evaporative cooler systems requiring high flow rates. With a 1/30 HP motor delivering 563 gallons per hour, it is built to handle larger units ranging from 15000 to 21500 CFM. The concentric fan-cooled motor ensures durability and consistent performance over time.
Pros
- High flow rate for large units
- Snap-off volute plate for cleaning
- Includes 45 degree discharge adapter
- Built to last with thermal overload
- Fits 5/8 and 3/4 tubing
Cons
- Higher price point than generic pumps
- Requires specific voltage check
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This pump features a snap-off volute plate that makes cleaning easy, a critical maintenance task for pumps operating in dirty water environments. The one-piece corrosion-resistant steel shaft adds to its robustness, while the included 45-degree discharge adapter and tubing fittings simplify installation. Universal mounting configurations allow it to fit various setups.
The higher price point reflects the quality of construction and the specific capacity capabilities. While it may not be necessary for smaller units, it is a superior choice for commercial or large home systems. The thermal overload protection adds a layer of safety that prevents burnout during continuous operation.
This pump is ideal for those who need reliable high-volume circulation and are willing to invest in quality. It is a strong recommendation for large swamp coolers. If you need a pump that can handle heavy-duty demands, this model delivers consistent results.
Maintenance Friendly
The snap-off volute plate allows for easy cleaning, helping maintain optimal flow and extending the pump's operational life.
High Capacity
With 563 GPH flow and a 12-foot shutoff height, this pump is designed for systems requiring significant water movement.
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4. Dial MC8500UL – Best for Mid-Range CFM
Dial MC8500UL Pump
Supports 4000 to 8500 CFM
Corrosion-resistant shaft and bearings
Thermal overload protection included
Includes durable mounting brackets
The Dial MC8500UL High-Efficiency Evaporative Cooler Pump is designed to circulate water efficiently in units covering 4000 to 8500 CFM. It features a robust 115V motor with thermal overload protection for safe operation and longevity. The pump is engineered for low noise, ensuring a comfortable environment in homes or offices where the cooler is located.
Pros
- High-efficiency motor for better performance
- Low noise operation for comfort
- Thermal overload protection safety
- Corrosion-resistant shaft for longevity
- Includes mesh filter bag and brackets
Cons
- May be noisy over time
- Installation can be tight in small units
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A key feature is the corrosion-resistant shaft and bearings, which provide reliability and consistent performance over time. The durable mounting brackets and mesh filter bag included facilitate easy installation and maintenance. This design helps prevent debris from entering the pump, reducing the risk of clogs.
While generally reliable, users should be aware that noise levels might increase as the unit ages. Installation can sometimes be tight depending on the internal dimensions of the cooler. However, the efficiency features and included accessories make it a solid choice for mid-range systems.
This pump is best suited for users needing a balance between power and quiet operation. It offers good value for standard residential coolers. If you need a pump that handles mid-range CFM requirements, this model is a strong contender.
Efficient Circulation
The 115V motor is designed to efficiently circulate water in evaporative coolers covering a specific range of CFM.
Quiet Performance
Engineered for quiet performance, this pump ensures a comfortable and noise-free environment in your home or office.
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5. UL7500 – Best Compact Submersible Pump
UL7500 Pump
Fits systems up to 528 GPH
Compact design for tight spaces
100% submersible motor
Dry-burn protection included
The UL7500 Swamp Cooler Pump is a highly rated option for systems requiring up to 528 gallons per hour. Its compact design fits tight spaces where taller pumps won't fit. The pump is 100% submersible, meaning the entire unit can sit fully underwater without short circuits or motor damage. This design eliminates water level worries.
Pros
- Compact size fits tight spaces
- Fully submersible design prevents burnout
- Bottom-suction intake with guard
- Ultra quiet operation
- Easy installation under 10 minutes
Cons
- Limited to smaller system capacities
- Specific dimensions may require checking
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It features a bottom-suction intake with a built-in debris guard, pulling water from the bottom of the tank where sediment settles. This prevents blockages and extends pump life. The pump runs with minimal noise, described as a low smooth hum. Dry-burn protection automatically shuts off the pump if water runs low.
Because it is designed for smaller capacities, it may not suit larger commercial units. However, for home use, its quiet operation and safety features are excellent. The installation process is simple and does not require special tools, making it user-friendly.
This pump is perfect for compact cooler setups that need reliable performance. It is ideal for those prioritizing quiet operation. If you need a reliable pump for a smaller unit, this is a top choice.
Compact Design
The pump measures 5.9 x 4.7 x 3.9 inches, fitting compact designs where taller pumps won't fit.
Silent Operation
Runs with minimal noise—just a low, smooth hum, no grinding or buzzing—making it suitable for home environments.
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6. Little Giant CP1-115 – Best for Small Units
Little Giant CP1-115
307 GPH at 1-foot head
Snap-off volute plate
One-piece corrosion resistant shaft
Fits 5/8 and 3/4 tubing
The Little Giant CP1-115 is a versatile pump suitable for evaporative coolers, sales displays, and labs. It delivers 307 gallons per hour at a 1-foot head. The concentric fan-cooled motor is built to last with thermal overload protection. It fits 5/8 and 3/4-inch tubing, making it adaptable.
Pros
- Compact and reliable design
- Easy to clean snap-off plate
- Versatile mounting options
- Thermal overload protection
- Fits sales displays and labs
Cons
- Lower flow rate for large coolers
- Requires checking voltage compatibility
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Cleaning is easy with a snap-off volute plate. The one-piece corrosion-resistant steel shaft adds durability. It comes with a 45-degree discharge adapter and a 6-foot cord with plug. These features make it convenient for various applications beyond just home coolers.
The lower flow rate means it is not ideal for very large industrial units. However, it is perfect for smaller systems or specialized applications like water baths. The versatile mounting options provide flexibility for different setups.
This pump is best for small units or specialized applications. It is a reliable choice for consistent performance. If you need a versatile pump for a small system, this model is a great option.
Versatility
This pump is suitable for evaporative coolers, swamp coolers, sales displays, labs, and water bath circulation.
Durability
Built to last with a high-quality concentric fan-cooled motor and thermal overload protection for longevity.
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7. 6060050 – Best Quiet Operation
6060050 Pump
Ultra quiet design
Dry burning protection
Fits MC61M and M250
Thermally protected
The 6060050 Evaporative Coolers Pump is designed for ultra quiet operation, ideal for homes where noise matters. It features dry burning protection to prevent motor damage if water runs low. The pump fits models like MC61M and M250. Durable components ensure long-lasting reliable operation.
Pros
- Ultra quiet performance
- Dry burning protection included
- Durable components for reliability
- Fits common cooler models
- Quality assurance support
Cons
- Limited model compatibility
- May need specific voltage
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Installation involves removing the back case and disconnecting the quick connect panel. The pump is thermally protected from overheating when running dry. This safety feature adds peace of mind for continuous use. The customer support team is available for quick problem resolution.
The specific model fit is a limitation for universal systems. However, for compatible units, it offers a direct replacement that maintains quiet performance. The dry burning protection is a valuable safety feature.
This pump is perfect for those prioritizing quiet operation. It is a practical choice for specific model owners. If you need a quiet pump for your cooler, this model delivers.
Quiet Operation
This pump is engineered for ultra quiet performance, making it ideal for home use where noise is a concern.
Safety Features
Dry burning protection prevents motor damage if water runs low, ensuring safety during continuous use.
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8. Dial UL7500 – Best Traditional Design
Dial UL7500 Pump
Noncorrosive motor housing
Built-in optional bleed-off port
Removable base plate
Built-in pump screen
The Dial UL7500 features a noncorrosive, flame-retardant motor housing for safe operation. It has a removable base plate and a built-in pump screen to catch debris. A built-in optional bleed-off port allows for system maintenance. This design is robust and reliable for standard units.
Pros
- Flame-retardant motor housing
- Removable base plate for service
- Built-in pump screen
- Bleed-off port included
- Noncorrosive construction
Cons
- Older design technology
- No submersible motor
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The removable base plate simplifies cleaning and maintenance tasks. The pump screen protects the motor from debris. The noncorrosive construction ensures longevity even in harsh water conditions. This pump is a solid choice for traditional cooler systems.
It lacks the submersible motor found in newer models, requiring specific tank placement. However, its durability and maintenance features make it a strong option. The bleed-off port adds convenience for system adjustments.
This pump is best for those who prefer traditional designs. It offers reliable performance. If you need a durable pump for a standard unit, this model works well.
Safety Design
The motor housing is noncorrosive and flame-retardant, ensuring safe and reliable operation in various conditions.
Maintenance Ease
A removable base plate and built-in pump screen facilitate easy cleaning and maintenance of the pump.
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9. Dial 1387 – Best Universal Fit
Dial 1387 Pump
Highly durable construction
Easy installation and handling
Fits UL15000 systems
Manufactured in China
The Dial 1387 is a highly durable pump designed for UL15000 systems. It is easy to install and handle, making it a good choice for DIYers. The durable construction ensures reliable performance. It is designed for easy handling.
Pros
- Easy installation and handling
- Highly durable materials
- Compatible with UL15000
- Simple replacement process
- Reliable operation
Cons
- Few features listed
- Generic design
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The simplicity of the design makes it a straightforward replacement. There are fewer specific features listed, but it focuses on core performance. The durable materials ensure longevity. This pump is a solid basic option.
Some may prefer models with more detailed specifications. However, for a basic replacement, it works well. The ease of installation is a key benefit. It is a reliable choice for standard needs.
This pump is perfect for straightforward replacement needs. It offers reliable performance. If you need a basic pump for your unit, this model works well.
Durability
The product is highly durable, ensuring reliable performance and long-term use for your cooling system.
Ease of Use
Easy installation and handling make this pump accessible for DIY users needing a quick replacement.
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10. Little Giant 542005 – Best Heavy Duty
Little Giant 542005
1/30 HP heavy duty motor
Thermal overload protection
90 degree barbed elbow
Universal mounting configurations
The Little Giant 542005 is a heavy-duty pump with a 1/30 HP concentric fan-cooled motor. It includes thermal overload protection for safety. Universal mounting configurations allow it to fit various setups. It comes with a 90-degree barbed elbow with bleed-off.
Pros
- Heavy duty concentric motor
- Thermal overload protection
- Universal mounting options
- Includes 90 degree elbow
- Reliable performance
Cons
- Lower rating than other models
- Basic feature set
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The heavy-duty motor provides reliable performance for demanding applications. The universal mounting options add flexibility. While the rating is lower than some other models, it is a solid option for those needing specific features. The thermal protection prevents damage.
This model may be better for users who need specific mounting configurations. It is not the top-rated option overall. However, the heavy-duty design ensures reliability. It is a practical choice for specific needs.
This pump is best for those needing heavy-duty performance. It offers reliable operation. If you need a pump with specific mounting, this model works well.
Heavy Duty Motor
This pump features a heavy-duty concentric fan-cooled motor designed for reliable performance and longevity.
Mounting Flexibility
Universal mounting configurations allow the pump to fit a wide range of cooler setups and configurations.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Selecting the right evaporative cooler pump involves considering flow rate, submersibility, and safety features. This guide breaks down the key factors to ensure you find a pump that meets your system needs.
Flow Rate Requirements
Flow rate, measured in gallons per hour (GPH), determines how much water the pump circulates. Larger coolers with higher CFM ratings require pumps with higher flow rates to maintain efficiency.
Check your cooler's specifications to match the pump flow capacity. A mismatch can lead to poor cooling or pump failure.
Submersible vs. Top Mount
Submersible pumps can sit fully underwater without risk of burnout, whereas top-mount pumps must remain above water level. Submersible models offer more installation flexibility.
If your tank design allows, choose a fully submersible pump to avoid water level monitoring and potential motor damage.
Motor Safety Features
Look for pumps with thermal overload protection and dry-burn protection. These features prevent the motor from burning out if water runs low or overheats during operation.
Pumps without these safety features are more prone to failure. Prioritize safety to extend pump life and avoid costly replacements.
Noise Levels
Noise levels vary by model and motor type. Some pumps operate quietly with a low hum, while others may produce grinding or buzzing sounds.
For home or office use, select a pump described as ultra quiet or low noise to maintain comfort.
Installation Compatibility
Check dimensions and connector types to ensure the pump fits your cooler tank. Some models have specific quick-connect panels or require specific tubing sizes.
Review the product details for mounting brackets and discharge adapters. Universal adapters simplify installation and reduce modifications.
Maintenance Ease
Pumps with snap-off volute plates or built-in screens make cleaning easier. This helps prevent debris from clogging the system.
Choose a design that allows easy access to internal parts for regular maintenance and cleaning.
Voltage and Cord Length
Most pumps operate on 115V. Check the voltage rating to match your power outlet. Cord length is also important for reach into the tank.
Ensure the cord is long enough to reach an outlet safely. Avoid extension cords that may pose fire risks.
Material Durability
Corrosion-resistant shafts and bearings are essential for longevity. Look for materials like steel or corrosion-resistant coatings.
Avoid cheap plastic components that may degrade over time. Durable materials ensure long-term reliability.
How to Use and Care for Your Evaporative Cooler Pump
To install, first turn off power to the cooler and remove the back panel. Disconnect the old pump and attach the hose to the new pump using the included adapters. Place the pump in the tank and secure it with brackets.
Regular maintenance includes cleaning the pump screen or volute plate to remove debris. Check for signs of wear or leaks periodically to prevent unexpected failures during peak use.
If the pump is submersible, ensure it remains fully submerged during operation. Never run a pump dry as this can damage the motor. If noise increases, inspect for blockages or misalignment.
Frequently Asked Questions
What is the typical lifespan of an evaporative cooler pump?
Most evaporative cooler pumps last 3 to 5 years with proper maintenance. Factors like water quality, frequency of use, and safety features influence longevity. Regular cleaning and dry-burn protection help extend this lifespan.
Can I use a submersible pump in any cooler?
Not all coolers are designed for submersible pumps. Check your tank size and clearance. Submersible models can be used if the tank allows full immersion. Verify dimensions before purchasing to ensure fit.
What does thermal overload protection do?
Thermal overload protection automatically shuts off the pump when it overheats. This prevents the motor from burning out. It is a safety feature commonly found in higher-quality pumps.
How do I know which pump fits my cooler?
Check your cooler's model number and CFM rating. Match the pump flow rate and voltage. Many products list specific compatible models. Review the product details to ensure compatibility.
Is it expensive to replace a cooler pump?
Replacing a pump is generally affordable and can be done DIY. Service calls cost more. A pump replacement restores cooling performance without major expenses.
Why does my pump make noise?
Noise can be caused by debris, misalignment, or a failing motor. Clean the pump screen and check for obstructions. If noise persists, the pump may need replacement.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
We reviewed ten excellent evaporative cooler pumps ranging from budget replacements to premium high-flow options. The UL11000 stands out as the best overall submersible model, while the 6017050 offers excellent value for budget buyers.
Prioritize safety features like dry-burn protection and thermal overload protection to extend pump life. Matching the flow rate to your cooler size is critical for efficient operation. Choose a model that simplifies maintenance.
Prices and availability can change frequently online. Check current listings before purchasing to ensure you get the best deal. We hope this guide helps you make an informed decision for your cooling system.