6017050 Evaporative Cooler Pump with 3 Pin Connector
4.5Editor score
Fits MC18M and MC18V models
Thermally protected from overheating
Durable components for reliable operation
In this guide
Finding a reliable evaporative cooler pump is essential for maintaining efficient cooling during hot months. A good pump ensures consistent water circulation through the cooling pads to maximize evaporation and temperature reduction.
We evaluated ten top-rated pumps based on their flow rates, motor durability, noise levels, and ease of installation. Each model offers unique features suited for different cooler sizes and user needs.
Each pick in this guide highlights specific strengths and ideal use cases to help you make an informed decision. Please note that availability and details may vary over time.
Top 3 Picks for Best Evaporative Cooler Pump
Dial Manufacturing UL7500 115V Concentric Evaporative Cooler Pump
4.5Editor score
Noncorrosive flame-retardant motor housing
Built-in pump screen included
Removable base plate for access
Little Giant CP1-115, 1/70 HP, 115/127V, 307 GPH Evaporative Cooler Pump
4.3Editor score
High quality concentric fan-cooled motor
Snap-off volute plate for cleaning
Includes 45 degree discharge adapter
Top 10 Best Evaporative Cooler Pump in 2026 Compared
The following table provides a side-by-side comparison of all ten evaporative cooler pumps featured in this guide. Review the key specifications to find the right fit for your unit.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Dial Manufacturing UL7500 115V Concentric Evaporative Cooler Pump
Noncorrosive motor housing
Built-in pump screen
Removable base plate
Optional bleed-off port
4.5Editor score
Editor's Choice
Dial MC8500UL High-Efficiency Evaporative Cooler Pump with Thermal Overload Protection – 115V, 4,000-8,500 CFM Units – 1442
115V motor with thermal protection
Covers 4000 to 8500 CFM
Corrosion-resistant shaft bearings
Includes mounting brackets filter bag
4.3Editor score
Best Premium
Little Giant CP1-115, 1/70 HP, 115/127V, 307 GPH Evaporative Cooler Pump
1/70 HP concentric fan-cooled motor
307 GPH flow at 1ft head
Snap-off volute plate easy clean
6 ft cord with plug included
4.3Editor score
6017050 Evaporative Cooler Pump with 3 Pin Connector
Fits MC18M and MC18V models
Thermally protected from overheating
Quick connect disconnect panel removal
High performance dry running protection
4.5Editor score
6060050 Evaporative Coolers Pump Ultra Quiet with Dry Burning Protection
Fits MC61M and M250 models
Thermally protected from overheating
Ultra quiet operation design
Durable components long lasting use
4.6Editor score
DIAL 1387 UL15000 Cooler Pump
Manufactured in China
Highly durable construction
Easy installation handling
Easy to use design
4.5Editor score
UL11000 110-120V Evaporative Cooler Pump
Fits up to 660 GPH flow
Fully submersible water safety
Bottom-suction intake debris guard
Dry-burn protection safe for 24/7
4.6Editor score
UL7500 110-120V Swamp Cooler Pump
Fits up to 528 GPH flow
Fully submersible water safety
Bottom-suction intake debris guard
Dry-burn protection safe for 24/7
5.0Editor score
Little Giant CP3-115, 1/30 HP, 115V, 563 GPH Evaporative Cooler Pump
1/30 HP concentric fan-cooled motor
563 GPH flow at 1ft head
Snap-off volute plate easy clean
90 degree barbed elbow with bleed
4.5Editor score
Little Giant 542005 CP3-115 1/30 Horsepower Evaporative Cooler Pump
1/30 HP heavy duty motor
563 GPH at 1 inch
Thermal overload protection
90 degree barbed elbow with bleed
4.1Editor score
1. Dial Manufacturing UL7500 115V Concentric Evaporative Cooler Pump – Best Overall Evaporative Cooler Pump
Dial Manufacturing UL7500 115V Concentric Evaporative Cooler Pump
115V motor voltage
Noncorrosive housing material
Built-in pump screen
Bleed-off port included
This pump from Dial Manufacturing stands out as a top choice for evaporative cooling systems due to its reliable construction and safety features. It holds a strong 4.5 rating from users who appreciate its straightforward design and functional components.
Pros
- Durable noncorrosive housing
- Built-in pump screen filter
- Optional bleed-off port feature
- Flame-retardant motor design
- Removable base plate access
Cons
- Requires specific voltage match
- Basic design without extras
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The noncorrosive and flame-retardant motor housing ensures that the pump remains safe even under high heat conditions often found in swamp coolers. The built-in pump screen helps filter out debris that could clog the system, while the optional bleed-off port allows for better water management.
While it lacks advanced smart features, its simplicity makes it a robust workhorse for many standard units. The removable base plate simplifies maintenance tasks like cleaning or part replacement without needing specialized tools.
This model is ideal for homeowners seeking a dependable replacement pump that prioritizes safety and ease of use. Its consistent performance makes it a trusted option for those maintaining older cooler systems.
Safety First Design
The flame-retardant motor housing provides an extra layer of protection against potential overheating risks during operation.
Built-in Filtration
The built-in pump screen helps keep debris out of the internal mechanisms to extend the pump life.
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2. Dial MC8500UL High-Efficiency Evaporative Cooler Pump – Efficient CFM Coverage
Dial MC8500UL High-Efficiency Evaporative Cooler Pump with Thermal Overload Protection – 115V, 4,000-8,500 CFM Units – 1442
115V motor voltage
Thermal overload protection
Covers 4000 to 8500 CFM
Corrosion-resistant shaft
This high-efficiency pump is designed to handle medium to large evaporative coolers with CFM ratings between 4,000 and 8,500. Users rate it 4.3 for its ability to circulate water effectively without causing excessive noise.
Pros
- Handles large CFM units
- Thermal overload protection
- Low noise performance
- Corrosion-resistant shaft bearings
- Includes mounting brackets
Cons
- Specific to 4000+ CFM
- Higher price than basic pumps
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The thermal overload protection is a key safety feature that prevents the motor from burning out during high-demand situations. Additionally, the corrosion-resistant shaft and bearings ensure that the pump maintains consistent performance even in humid environments.
Installation is made easier with the included durable mounting brackets and mesh filter bag. The low noise engineering ensures that the pump operates quietly, contributing to a comfortable environment in homes or offices.
Choose this pump if you have a larger unit requiring reliable water circulation and safety features. Its robust design makes it a solid investment for those who want long-term reliability.
Large Unit Compatibility
The motor is engineered to efficiently circulate water in larger evaporative coolers covering substantial CFM ranges.
Quiet Operation
Engineered for quiet performance to ensure a comfortable noise-free environment during use.
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3. Little Giant CP1-115 – High Quality Construction
Little Giant CP1-115, 1/70 HP, 115/127V, 307 GPH Evaporative Cooler Pump
1/70 HP motor
115/127V voltage range
307 GPH flow rate
Snap-off volute plate
Little Giant is known for durable pumps, and this model maintains that reputation with a high-quality concentric fan-cooled motor. Rated 4.3, it is praised for its longevity and versatility across different cooler types and lab uses.
Pros
- High quality concentric motor
- Snap-off volute plate
- Versatile mounting options
- Corrosion resistant steel shaft
- Includes discharge adapter
Cons
- Higher price point
- Specific voltage requirements
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The snap-off volute plate makes cleaning significantly easier compared to many other models. Additionally, the inclusion of a 45-degree discharge adapter and compatibility with 5/8 and 3/4 inch tubing adds to its flexible mounting options.
Its one-piece corrosion resistant steel shaft ensures reliable performance over time without rusting. The thermal overload protection also safeguards the motor during extended runtimes in demanding conditions.
This pump is a premium choice for those who need reliable circulation for displays or large coolers. Its robust design and ease of maintenance justify the investment for long-term use.
Easy Maintenance Design
The snap-off volute plate allows for quick and easy cleaning without needing complex disassembly.
Versatile Mounting
Multiple tubing sizes are supported to fit various cooling system configurations effectively.
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4. 6017050 Evaporative Cooler Pump – Ideal Replacement for MC18 Models
6017050 Evaporative Cooler Pump with 3 Pin Connector
Fits MC18M models
Fits MC18V models
3 Pin connector interface
Thermally protected motor
This replacement pump is specifically designed for models like MC18M and MC18V, offering a precise fit for those units. With a 4.5 rating, users find the installation process straightforward and the performance reliable.
Pros
- Fits specific MC models
- Thermally protected motor
- Easy installation process
- Durable components used
- Quality assurance support
Cons
- Limited to specific models
- Requires back panel removal
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It features thermal protection to prevent overheating when running dry, which is crucial for pumps that might face water level fluctuations. The quick connect disconnect panel makes swapping the old pump out much faster than traditional screw-heavy methods.
High performance is ensured by durable components that are built to withstand regular use. The seller also provides quality assurance support to resolve any issues quickly after purchase.
If your cooler uses one of the specified models, this pump offers a cost-effective solution without sacrificing safety. Its design minimizes downtime during installation to keep your cooler running.
Model Specific Fit
Tailored for specific models to ensure perfect compatibility and ease of replacement.
Overheat Safety
Thermal protection prevents motor damage even if the pump runs dry unexpectedly.
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5. 6060050 Evaporative Coolers Pump – Quiet Operation for MC61 Models
6060050 Evaporative Coolers Pump Ultra Quiet with Dry Burning Protection
Fits MC61M models
Fits M250 models
Thermally protected motor
Ultra quiet operation
Rated 4.6, this pump stands out for its ultra-quiet performance, making it ideal for office or bedroom environments. It is tailored to fit models such as MC61M, MC61V, and M250 with ease.
Pros
- Fits MC61 and M250
- Ultra quiet operation
- Dry burning protection
- Durable components build
- Support provided for issues
Cons
- Specific model compatibility
- Requires panel disconnect
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Dry burning protection ensures that the pump shuts off automatically if water runs low, preventing internal damage. The quick connect disconnect mechanism simplifies the installation process significantly for DIY users.
Quality construction ensures that durable components provide long-lasting reliable operation for your cooling system. Customer support is available to solve problems quickly if you encounter any issues with the product.
Choose this pump for a quieter cooling experience without compromising on safety or fit. It is a great choice for those sensitive to noise in their living spaces.
Quiet Performance
The ultra-quiet design minimizes noise output for a more pleasant environment.
Safety Features
Dry burning protection prevents overheating when water levels are low.
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6. DIAL 1387 UL15000 – Simple and Durable Option
DIAL 1387 UL15000 Cooler Pump
Manufactured in China
Highly durable build
Easy installation handling
Simple user-friendly design
This pump is noted for its durability and ease of use. With a 4.5 rating, it offers a simple solution for those needing a reliable replacement without unnecessary complexity.
Pros
- Highly durable construction
- Easy installation process
- Simple to use design
- Reliable operation
- Easy handling
Cons
- Lack of detailed specs
- Basic feature set
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Manufactured to be highly durable, it handles the rigors of evaporative cooling cycles effectively. The easy installation process means that users can replace their old pump quickly without professional help.
The design focuses on essential functionality, ensuring that the pump operates smoothly and reliably. It is a practical choice for basic systems where high-end features are not required.
Opt for this pump if you value simplicity and durability over advanced features. It provides the core functionality needed to keep your cooler running efficiently.
Ease of Use
The design emphasizes user-friendly handling for straightforward maintenance tasks.
Reliability Focus
Built to last with durable materials that withstand regular cooling operations.
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7. UL11000 110-120V – Fully Submersible Safety Design
UL11000 110-120V Evaporative Cooler Pump
110-120V voltage
Fully submersible unit
Bottom-suction intake grille
Dry-burn protection
This pump is unique for being fully submersible, which eliminates worries about water levels damaging the motor. Rated 4.6, it is compatible with most evaporative coolers requiring up to 660 GPH flow.
Pros
- Fully submersible safety
- Bottom-suction intake
- Built-in debris guard
- Dry-burn protection
- Universal fit range
Cons
- Taller design size
- Requires tank clearance
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The bottom-suction intake pulls water from the tank bottom where sediment settles, reducing clogs. A built-in debris guard traps particles before they reach the internal system to extend the pump life.
Dry-burn protection automatically shuts off the pump if water runs low, ensuring safety during 24/7 continuous use. Installation is straightforward for DIY users without needing special tools.
Choose this pump if you want a safe and reliable option that prevents motor damage from water issues. Its universal fit makes it a versatile choice for many home systems.
Submersible Safety
The unit is 100 percent submersible to allow full underwater operation safely.
Debris Management
A bottom-suction intake with a guard traps debris to prevent system blockages.
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8. UL7500 110-120V – Compact Fully Submersible Pump
UL7500 110-120V Swamp Cooler Pump
110-120V voltage
Fits 528 GPH
Fully submersible unit
Bottom-suction intake grille
Achieving a perfect 5.0 rating, this pump is designed for systems requiring up to 528 GPH flow. It is fully submersible like the UL11000, ensuring safe operation without water level worries.
Pros
- Fully submersible safety
- Compact space saving design
- Bottom-suction intake
- Dry-burn protection
- Perfect 5.0 rating
Cons
- Limited to smaller units
- Basic feature set
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Its compact design allows it to fit in tight spaces where taller pumps might not be suitable. The bottom-suction intake and debris guard work together to prevent clogs and extend pump life.
Dry-burn protection shuts off the pump if water runs low to prevent motor damage. Installation is easy for homeowners who can do it themselves without professional help.
Select this model for reliable, safe cooling in smaller coolers where space is limited. Its perfect user rating indicates high satisfaction with its performance and design.
Compact Design
The compact footprint fits into tight spaces where other pumps may not fit.
Universal Fit
Compatible with most evaporative units requiring standard flow rates.
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9. Little Giant CP3-115 – Higher Flow Rate Performance
Little Giant CP3-115, 1/30 HP, 115V, 563 GPH Evaporative Cooler Pump
1/30 HP motor
563 GPH flow
115V voltage
90 degree barbed elbow
This pump is built for higher flow rates, delivering 563 GPH at one foot of head. Rated 4.5, it is ideal for larger units or applications that demand more water circulation power.
Pros
- Higher 563 GPH flow
- High quality concentric motor
- Thermal overload protection
- Snap-off volute plate
- Includes barbed elbow
Cons
- Higher cost
- Specific voltage needs
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The high-quality concentric fan-cooled motor ensures durability even during long runtimes. Thermal overload protection adds a layer of safety to prevent motor burnout during peak usage.
The 90-degree barbed elbow with bleed-off simplifies the setup by providing necessary fittings. The snap-off volute plate allows for easy maintenance and cleaning tasks.
Choose this pump if you need a higher flow rate for larger systems. Its robust construction makes it a premium choice for demanding cooling applications.
High Flow Capacity
Delivers 563 GPH to support larger coolers requiring higher water volume.
Durable Motor
The fan-cooled motor design supports consistent performance and longevity.
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10. Little Giant 542005 – Reliable Heavy Duty Pump
Little Giant 542005 CP3-115 1/30 Horsepower Evaporative Cooler Pump
1/30 HP motor
563 GPH flow
115V voltage
90 degree barbed elbow
Another heavy-duty option from Little Giant, this pump delivers 563 GPH flow for demanding applications. It holds a solid 4.1 rating from users who value its reliability and heavy-duty construction.
Pros
- Heavy duty motor
- Universal mounting options
- Thermal overload protection
- 90 degree elbow included
- Durable construction
Cons
- Slightly lower rating
- Higher price point
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The heavy duty concentric fan-cooled motor is built for thermal overload protection to prevent overheating. Universal mounting configurations make it adaptable to various cooler setups without complex modifications.
The 90-degree barbed elbow with bleed-off ensures that water flow can be managed effectively. Its corrosion resistant shaft contributes to consistent performance over time in humid conditions.
This pump is a strong choice for those prioritizing heavy-duty performance in their cooling system. Its features support long-term reliability and ease of use.
Universal Mounting
Multiple mounting options allow the pump to fit a wide range of cooler designs.
Safety Protection
Thermal overload protection prevents motor damage during extended use.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Selecting the right evaporative cooler pump depends on several technical and practical factors. This guide explains what to consider to ensure optimal performance and longevity.
Flow Rate and CFM Matching
The most critical factor is matching the pump flow rate to your cooler size. CFM indicates how much air the cooler moves, and the pump must circulate enough water to wet the pads effectively for that volume. A pump that is too weak will lead to dry spots and reduced cooling, while an overly powerful pump may waste energy or cause overflow. Always check your cooler specifications to find the recommended pump flow in gallons per hour to ensure compatibility.
Match the pump flow rate to your cooler CFM for efficient evaporation and performance.
Voltage and Connector Compatibility
Most evaporative cooler pumps operate at 115V or 120V. Ensure the new pump voltage matches your unit requirement to avoid electrical issues. Connector types also vary; some use quick connect disconnect panels, while others use 3 pin connectors. Verify the plug and cable length match your existing setup to prevent wiring problems. If your unit has a specific connector, look for replacements that explicitly mention compatibility to avoid return hassles.
Ensure voltage and connector types match your existing unit to prevent electrical failures.
Motor Type and Protection
The motor is the heart of the pump. Concentric fan-cooled motors are common and reliable for standard use. Thermal overload protection is a vital safety feature that shuts off the pump if it overheats or runs dry. This prevents costly motor burnout and extends the lifespan of the unit. Pumps with this protection are essential if your unit does not have external water level sensors. Check for this feature in the product description to ensure long-term durability.
Look for thermal overload protection to prevent motor damage from overheating or dry runs.
Submersibility and Installation
Some modern pumps are fully submersible, meaning they can be fully underwater without damage. Traditional pumps might fail if submerged. This flexibility simplifies installation in tanks with fluctuating levels. Also consider the mounting mechanism: some pumps clip in easily while others require screws and hose fittings. Choose a design that fits your comfort level with DIY tasks. A tool-free installation can save you time and money on repairs.
Choose submersible designs and easy mounting for flexible and quick installation.
Noise Levels
If your cooler is near living spaces, noise levels matter. Some pumps are engineered for quiet performance, while others might hum or buzz. Reading user reviews can give you insight into real world noise experiences. Quieter models help maintain a peaceful environment, especially in offices or bedrooms. If noise is a concern, look for models labeled as low noise or ultra quiet before making your selection.
Consider noise levels for living areas to ensure quiet and comfortable operation.
Material Durability
Swamp coolers work in humid environments that can cause corrosion over time. Look for pumps with noncorrosive motor housings and corrosion resistant shafts. These materials ensure that the unit does not degrade quickly due to moisture. Heavy duty pumps often use steel shafts or treated alloys that resist rust. Investing in durable materials reduces the frequency of replacements and ensures consistent performance.
Prioritize corrosion resistant materials like steel shafts for humid environment longevity.
Additional Features and Accessories
Some pumps include extra accessories that make maintenance easier. Built-in screens filter out debris to protect internal parts. Bleed-off ports allow for better water management during filling or draining. Included fittings like elbows or adapters save you from buying extra plumbing parts. These small conveniences can make a big difference in setup time and ongoing care. Check what is included in the box to maximize value.
Look for added accessories like screens and fittings to simplify installation and maintenance.
How to Use and Care for Your Evaporative Cooler Pump
To ensure smooth operation, first disconnect power to your cooler before attempting to replace the pump. Remove the back panel to access the pump tank and disconnect any quick connect or screw-on hoses carefully.
Position the new pump securely in the tank using the provided brackets. Connect the water lines and ensure there are no kinks in the hose. Replace the back panel and plug in the unit to test the flow.
Regularly inspect the pump screen to remove any debris that accumulates during use. This simple step prevents clogging and maintains optimal flow rates. If you plan to store the unit for winter, drain the tank completely to prevent freezing damage to the pump.
Frequently Asked Questions
What is the typical lifespan of an evaporative cooler pump?
Most quality pumps last between three to five years depending on usage and maintenance. Regular cleaning of the pump screen and ensuring the motor stays dry helps extend this lifespan. High quality models with thermal overload protection tend to last longer under heavy use conditions.
How do I know if my pump is burnt out?
Signs of a burnt out pump include a humming noise without water movement or a complete lack of power. The motor might feel excessively hot to the touch or emit a burning smell. Check your circuit breaker first to rule out electrical issues before replacing the unit.
Can I install a replacement pump myself?
Yes, many pumps are designed for DIY installation using simple tools or quick connect panels. The process usually involves disconnecting the old pump and snapping or screwing the new one in place. Always turn off power to the unit before working on the electrical connections.
Why is my pump leaking water?
Leaks often occur due to loose hose fittings or cracks in the pump housing. Check all connection points and tighten them securely to stop drips. If the housing itself is cracked, you will need to replace the entire unit to prevent water damage.
Do I need to replace the pump every season?
No, replacing the pump every season is not necessary unless it fails or shows signs of wear. Many high quality units can last several seasons with proper care. Inspect the pump at the start of the cooling season to catch issues early.
What happens if the pump runs dry?
Running dry can damage the motor if it lacks protection. Some pumps have a safety feature that shuts them off automatically when water runs low. To avoid damage, keep your tank filled and ensure the intake is not blocked.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
Choosing the right evaporative cooler pump ensures your system runs efficiently and quietly throughout the warm months. Our top picks cover a range of needs from budget friendly replacements to high capacity models.
Prioritize matching flow rates to your unit size and checking for safety features like thermal overload protection. These factors prevent premature failure and keep your cooling performance consistent.
We hope this guide helps you select a durable replacement that fits your needs. Always verify current availability and specifications before finalizing your purchase to avoid compatibility issues.