6017050 Evaporative Cooler Pump with 3 Pin Connector
4.5Editor score
Thermal protection from overheating
Compatible with MC18M models
Durable long-lasting components
In this guide
Finding the right evaporative cooler pump ensures your swamp cooler runs efficiently throughout the hot summer months. A reliable pump circulates water evenly across the cooling pads, maintaining optimal airflow and temperature control in your home or office space.
We evaluated ten highly rated pumps based on flow capacity, motor durability, noise levels, and ease of installation. Each option offers unique features like thermal protection, submersible designs, or quiet operation to suit different cooler sizes and user needs.
Each review highlights key specifications, pros, cons, and ideal use cases to help you make an informed decision. Please note that prices and availability may change over time, so check current listings before purchasing your next replacement pump.
Top 3 Picks for Best Evaporative Cooler Pump
Dial Manufacturing UL7500 115V Concentric Evaporative Cooler Pump
4.5Editor score
Noncorrosive motor housing
Built-in pump screen
Optional bleed-off port
UL11000 110-120V Evaporative Cooler Pump
4.6Editor score
100% submersible design
Bottom-suction debris guard
Dry-burn protection included
Top 10 Best Evaporative Cooler Pump in 2026 Compared
This table provides a side-by-side comparison of all ten pumps, highlighting their key specifications, ratings, and unique features to help you quickly identify the best match for your specific evaporative cooler model and cooling requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Dial Manufacturing UL7500
Noncorrosive motor housing
Built-in pump screen
Optional bleed-off port
Concentric pump design
4.5Editor score
Editor's Choice
Dial MC8500UL
Thermal overload protection
Quiet performance operation
Corrosion-resistant shaft
Includes mounting brackets
4.3Editor score
Best Premium
Little Giant CP1-115
307 GPH flow rate
Snap-off volute plate
Corrosion resistant shaft
45 degree discharge included
4.3Editor score
6017050 Pump
Thermal protection included
Fits MC18M models
Durable components
Easy installation steps
4.5Editor score
6060050 Pump
Ultra quiet operation
Dry burning protection
Fits MC61M models
Durable components
4.6Editor score
DIAL 1387 UL15000
Highly durable
Easy to use
Easy installation
Easy handling
4.5Editor score
UL11000 Pump
Fully submersible design
Bottom-suction intake
Dry-burn protection
Universal compatibility
4.6Editor score
UL7500 Swamp Pump
Compact design
Fully submersible
Bottom-suction intake
Dry-burn protection
5.0Editor score
Little Giant CP3-115
563 GPH flow rate
Fan-cooled motor
Thermal protection
15000 CFM range
4.5Editor score
Little Giant 542005
563 GPH flow rate
Heavy duty motor
Universal mounting
90 degree elbow
4.1Editor score
1. Dial Manufacturing UL7500 – Best Overall Evaporative Cooler Pump
Dial Manufacturing UL7500 115V Concentric Evaporative Cooler Pump
Noncorrosive motor housing
Built-in pump screen
Optional bleed-off port
115V voltage rating
The Dial Manufacturing UL7500 is a highly rated evaporative cooler pump known for its durability and practical design. With a 4.5 star rating, it offers a noncorrosive motor housing and a built-in pump screen to protect against debris during operation.
Pros
- Noncorrosive motor housing
- Built-in pump screen
- Optional bleed-off port
- Reliable concentric design
- Flame-retardant construction
Cons
- Basic feature set
- Limited capacity info
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Its concentric design ensures efficient water circulation, while the removable base plate and optional bleed-off port simplify maintenance tasks. The flame-retardant housing adds a layer of safety, making it suitable for continuous use in various cooler models.
While it lacks advanced features like thermal overload protection found in newer models, its solid build quality and straightforward design make it a dependable choice. Users appreciate its reliability and ease of installation for standard 115V systems.
This pump is ideal for homeowners seeking a durable, no-frills replacement for older evaporative coolers. If you need a proven pump that balances performance and simplicity, the UL7500 is a strong candidate for your system.
Durable Motor Construction
The noncorrosive and flame-retardant motor housing ensures longevity and safety in humid environments.
Easy Maintenance Features
A removable base plate and built-in pump screen make cleaning and upkeep simple for users.
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2. Dial MC8500UL – Best Thermal Protection Evaporative Cooler Pump
Dial MC8500UL High-Efficiency Evaporative Cooler Pump with Thermal Overload Protection
Thermal overload protection
Quiet performance operation
Corrosion-resistant shaft
4000-8500 CFM
The Dial MC8500UL is designed for high-efficiency cooling with thermal overload protection to safeguard the motor during high-demand situations. Rated 4.3 stars, it features a robust 115V motor that circulates water for coolers covering 4,000 to 8,500 CFM.
Pros
- Thermal overload protection
- Engineered quiet performance
- Corrosion-resistant shaft
- Includes mounting brackets
- Mesh filter bag included
Cons
- Slightly higher price
- Specific CFM range
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Its low-noise engineering ensures a comfortable environment, while the corrosion-resistant shaft and bearings enhance reliability over time. Included mounting brackets and a mesh filter bag facilitate easy installation and help maintain clean water flow.
Although priced slightly higher than basic models, the added safety features and quiet operation justify the cost for many users. It is particularly well-suited for medium to large evaporative coolers that require consistent and efficient water circulation.
Choose the MC8500UL if you prioritize motor safety and noise reduction in your cooling system. Its comprehensive feature set makes it a versatile option for both residential and light commercial applications.
Safety and Longevity
Thermal overload protection prevents motor damage during overheating, extending the pump's operational life.
Quiet Operation
Engineered for low noise, this pump ensures a comfortable environment without disruptive humming or buzzing.
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3. Little Giant CP1-115 – Best Versatile Evaporative Cooler Pump
Little Giant CP1-115, 1/70 HP, 115/127V, 307 GPH Evaporative Cooler Pump
307 GPH flow rate
Snap-off volute plate
Corrosion resistant shaft
45 degree discharge
The Little Giant CP1-115 is a versatile pump suitable for evaporative coolers, labs, and water bath circulation. With a 4.3 star rating, it features a high-quality concentric fan-cooled motor and thermal overload protection for safe operation.
Pros
- Snap-off volute plate
- Corrosion resistant shaft
- 45 degree discharge adapter
- Fan-cooled motor
- Thermal overload protection
Cons
- Lower GPH output
- Specific voltage range
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Its snap-off volute plate makes cleaning easy, while the one-piece corrosion-resistant steel shaft ensures durability. The included 45-degree discharge adapter fits 5/8-inch and 3/4-inch tubing, offering flexible mounting options for various setups.
While its 307 GPH flow rate is modest compared to larger units, it is well-matched for systems requiring 5,000 to 7,500 CFM. The 6-foot cord with plug adds convenience for placement within the cooler tank.
This pump is ideal for users needing reliable circulation in smaller to medium evaporative systems. Its ease of maintenance and robust construction make it a trusted choice for consistent cooling performance.
Easy Maintenance
The snap-off volute plate allows users to clean the pump quickly without disassembling the entire unit.
Flexible Connections
The included 45-degree adapter and tubing compatibility simplify installation in diverse cooler configurations.
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4. 6017050 Pump – Best Budget Evaporative Cooler Pump
6017050 Evaporative Cooler Pump with 3 Pin Connector
Thermal protection included
Fits MC18M models
Durable components
3 pin connector
The 6017050 pump is a budget-friendly replacement designed for specific evaporative cooler models like MC18M and MFC1600. With a 4.5 star rating, it features thermal protection from overheating and durable components for reliable operation.
Pros
- Thermal protection from overheating
- Fits MC18M models
- Durable long-lasting components
- Easy installation process
- Quality assurance support
Cons
- Limited model compatibility
- Basic build description
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Installation is straightforward, involving removal of the back case and disconnecting the quick connect panel. The pump includes clear steps for replacing the hose and barb fitting, making it accessible for DIY users.
While its compatibility is limited to certain models, the thermal protection and durable construction offer good value for the price. Users appreciate the quality assurance support provided if any issues arise after purchase.
Choose this pump if you need an affordable replacement for compatible cooler models. Its ease of installation and safety features make it a practical choice for maintaining your cooling system.
Model Compatibility
Designed specifically for models like MC18M and MFC1600, ensuring a precise fit for your unit.
Thermal Protection
Thermally protected from overheating when running dry, preventing motor damage during operation.
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5. 6060050 Pump – Best Quiet Evaporative Cooler Pump
6060050 Evaporative Coolers Pump Ultra Quiet with Dry Burning Protection
Ultra quiet operation
Dry burning protection
Fits MC61M models
5300 CFM range
The 6060050 pump stands out for its ultra-quiet performance and dry burning protection, rated 4.6 stars. It is designed for models like MC61M and M250, supporting systems requiring up to 5,300 CFM.
Pros
- Ultra quiet operation
- Dry burning protection
- Fits MC61M models
- Durable components
- Quality assurance support
Cons
- Specific model fit
- Limited flow details
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Installation follows a simple process similar to other replacement pumps, with clear steps for disconnecting and reconnecting components. The pump is thermally protected from overheating, ensuring safety during extended use in hot conditions.
Its focus on quiet operation makes it suitable for environments where noise is a concern, such as offices or bedrooms. The durable components and quality assurance support add confidence in its long-term reliability.
Opt for this pump if you need a quiet and safe replacement for compatible coolers. Its protective features and low noise profile make it a standout option for comfort-focused users.
Quiet Performance
Engineered for ultra-quiet operation, reducing noise levels during continuous cooling cycles.
Dry Burning Protection
Built-in protection prevents motor damage if the pump runs dry, enhancing safety and durability.
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6. DIAL 1387 – Best Durable Evaporative Cooler Pump
DIAL 1387 UL15000 Cooler Pump
Highly durable
Easy to use
Easy installation
Easy handling
The DIAL 1387 UL15000 is a highly durable pump known for its ease of use and installation. With a 4.5 star rating, it is designed to be user-friendly and reliable for standard evaporative cooling applications.
Pros
- Highly durable
- Easy to use
- Easy installation
- Easy handling
- Compact design
Cons
- Minimal specs provided
- Unknown motor details
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Its simple design ensures quick setup without complex tools or steps, making it accessible for DIY users. The product is manufactured with attention to durability, promising long-term performance in demanding conditions.
While specific technical details like flow rate or motor type are not extensively listed, its reputation for ease of handling appeals to those prioritizing simplicity. It is suitable for general replacement needs in compatible cooler systems.
Select this pump if you value durability and straightforward operation. Its user-centric design makes it a hassle-free option for maintaining your evaporative cooler without complications.
Durability Focus
Built to last with high-quality materials that withstand continuous operation in humid environments.
Ease of Use
Designed for easy installation and handling, reducing setup time and effort for users.
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7. UL11000 Pump – Best Submersible Evaporative Cooler Pump
UL11000 110-120V Evaporative Cooler Pump
100% submersible design
Bottom-suction intake
Dry-burn protection
Universal compatibility
The UL11000 is a premium pump featuring a fully submersible design and bottom-suction intake with a built-in debris guard. Rated 4.6 stars, it offers dry-burn protection and universal compatibility for various industrial and commercial coolers.
Pros
- 100% submersible design
- Bottom-suction intake with guard
- Dry-burn protection
- Universal compatibility
- Ultra quiet operation
Cons
- Taller tank design needed
- Higher price point
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Its unique design prevents short circuits by allowing the entire unit to sit fully underwater, eliminating water level worries. The bottom-suction intake traps debris before it reaches the system, extending pump life and preventing blockages.
While it is designed for larger coolers and may require taller tank space, its robust protection features and quiet operation justify the investment. Installation is DIY-friendly, taking under ten minutes with included adapters.
Choose this pump if you need advanced protection and versatility for larger systems. Its submersible capability and debris guard make it a top-tier choice for reliable, long-term cooling performance.
Submersible Safety
100% submersible design prevents motor damage from water exposure, ensuring safe operation in tanks.
Debris Management
Bottom-suction intake with a full-perimeter grille traps sediment, reducing clogs and maintenance needs.
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8. UL7500 Pump – Best Compact Submersible Evaporative Cooler Pump
UL7500 110-120V Swamp Cooler Pump
Compact design
100% submersible
Bottom-suction intake
Dry-burn protection
The UL7500 is a compact pump with a perfect 5.0 star rating, designed for tight spaces where taller pumps won't fit. It features a fully submersible design and bottom-suction intake to prevent clogs and motor damage.
Pros
- Compact design
- 100% submersible
- Bottom-suction intake
- Dry-burn protection
- High 5.0 rating
Cons
- Limited flow capacity
- Specific model fit
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Its dry-burn protection automatically shuts off the pump if water runs low, ensuring safety during operation. The ultra-quiet performance and universal compatibility make it suitable for portable and commercial units requiring up to 528 GPH flow.
While it is smaller and may have lower flow capacity, its durability and protective features are highly praised by users. The DIY-friendly installation with included adapters simplifies replacement for homeowners without technical skills.
Opt for this pump if you need a compact, reliable solution for limited spaces. Its high rating and submersible design make it a trusted choice for consistent cooling performance.
Space Efficiency
Compact design allows installation in tight cooler tanks where standard pumps cannot fit comfortably.
Protection Features
Dry-burn protection and submersible design prevent motor damage, ensuring safe continuous operation.
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9. Little Giant CP3-115 – Best High-Flow Evaporative Cooler Pump
Little Giant CP3-115, 1/30 HP, 115V, 563 GPH Evaporative Cooler Pump
563 GPH flow rate
Fan-cooled motor
Thermal protection
15000 CFM range
The Little Giant CP3-115 is a high-flow pump designed for larger evaporative coolers requiring 15,000 to 21,500 CFM. With a 4.5 star rating, it offers a 563 GPH flow rate and a durable fan-cooled motor with thermal protection.
Pros
- 563 GPH flow rate
- Fan-cooled motor
- Thermal protection
- Snap-off volute plate
- Corrosion resistant shaft
Cons
- Higher price point
- Heavier weight
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Its snap-off volute plate simplifies cleaning, while the one-piece corrosion-resistant steel shaft ensures long-term reliability. The 45-degree discharge adapter and tubing compatibility make installation flexible for various setups.
Although priced higher than smaller units, its capacity and build quality suit large commercial or industrial systems. The 6-foot cord with plug adds convenience for placement, ensuring efficient water distribution across cooling pads.
Choose this pump if you need robust performance for high-capacity coolers. Its flow rate and durable construction make it an investment for systems requiring consistent and powerful water circulation.
High Flow Capacity
Delivers 563 GPH at 1-foot head, supporting large coolers needing significant water distribution.
Durable Build
Fan-cooled motor and corrosion-resistant shaft ensure reliable operation in demanding and humid conditions.
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10. Little Giant 542005 – Best Reliable High-Flow Evaporative Cooler Pump
Little Giant 542005 CP3-115 1/30 Horsepower Evaporative Cooler Pump
563 GPH flow rate
Heavy duty motor
Universal mounting
90 degree elbow
The Little Giant 542005 is a reliable high-flow pump similar to the CP3-115, offering 563 GPH flow and universal mounting configurations. Rated 4.1 stars, it features a heavy-duty concentric fan-cooled motor with thermal overload protection.
Pros
- 563 GPH flow rate
- Heavy duty motor
- Universal mounting
- Thermal overload protection
- 90 degree barbed elbow
Cons
- Lower rating than CP3
- Higher price point
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Its 90-degree barbed elbow with bleed-off adds convenience for connecting to tubing, while the universal mounting fits various cooler designs. The 115V operation ensures compatibility with standard electrical outlets in most locations.
While it has a slightly lower rating than similar models, its heavy-duty build and practical accessories make it a solid choice for larger systems. Users appreciate the straightforward installation and reliable performance in demanding conditions.
Select this pump if you need a dependable high-flow solution with flexible mounting options. Its protective features and accessories make it a practical choice for maintaining efficient cooling in larger units.
Heavy-Duty Construction
Concentric fan-cooled motor ensures durability and consistent performance in high-demand evaporative systems.
Installation Convenience
Included 90-degree barbed elbow simplifies connections, reducing the need for extra fittings during setup.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Selecting the right pump involves considering flow rate, motor safety, and physical compatibility with your cooler. This guide outlines key factors to help you find a pump that ensures efficient water circulation and long-term reliability for your system.
Flow Rate Capacity
Flow rate determines how much water the pump can move per hour, directly impacting cooling efficiency. Larger coolers typically require higher GPH rates to ensure water reaches all cooling pads without drying out or creating hot spots. Always check your cooler's manual for the recommended flow rate to avoid under-sizing or overworking the pump.
Select a pump with a GPH rating that matches or slightly exceeds your cooler's requirements to maintain optimal performance.
Motor Protection Features
Motor protection features like thermal overload protection and dry-burn safeguards prevent damage from overheating or running without water. These features extend the pump's lifespan and reduce repair costs, especially in systems prone to low water levels or continuous operation. Pumps with these safeguards are ideal for remote or high-demand cooling applications.
Prioritize pumps with built-in thermal or dry-burn protection to ensure safety and longevity in your system.
Compatibility and Fit
Compatibility ensures the pump fits your cooler's tank size and tubing connections without modification. Check dimensions like length, width, and height to confirm it fits in your tank, and verify tubing diameter matches your hoses for leak-free operation. Universal models may offer more flexibility, while specific replacements guarantee exact matches.
Verify physical dimensions and connection types before purchasing to avoid installation issues or return hassles.
Noise Levels
Noise levels affect comfort, especially if your cooler operates near living or working spaces. Pumps engineered for quiet performance minimize humming or buzzing, creating a more pleasant environment. Look for descriptions like ultra-quiet or low-noise if you prioritize sound quality alongside cooling efficiency.
Choose a pump with low noise ratings to ensure minimal disruption during operation.
Durability and Materials
Durability depends on materials like corrosion-resistant shafts, noncorrosive housings, and robust bearings that withstand humid and wet conditions. Pumps with these materials resist rust and wear, ensuring reliable operation over multiple seasons. Invest in higher-quality construction to reduce replacement frequency and maintenance costs.
Look for corrosion-resistant and durable components to extend the pump's operational life.
Ease of Installation
Ease of installation matters for DIY users who want to replace a pump quickly without professional help. Features like snap-off plates, included adapters, and clear instructions simplify the process. Universal designs with flexible mounting options also reduce setup complexity for different cooler models.
Select pumps with user-friendly features and clear documentation to streamline the replacement process.
Submersible Design
Submersible pumps can sit fully underwater, eliminating risks of motor damage from water exposure. This design is safer for systems with varying water levels and often includes bottom-suction intakes to prevent debris from entering the pump. They are particularly useful for large or industrial coolers where tank depth is significant.
Consider a submersible pump if your system benefits from full water immersion and debris protection.
Warranty and Support
Warranty and customer support provide peace of mind in case of defects or performance issues. Reputable brands offer assurance programs to resolve problems quickly, ensuring you get value from your purchase. Check for support contact details and warranty terms before buying to protect your investment.
Ensure the pump comes with reliable support and warranty coverage for unexpected issues.
How to Use and Care for Your Evaporative Cooler Pump
To use your pump effectively, first ensure the water tank is filled to the recommended level to prevent dry running. Turn on the power and allow the pump to circulate water for several minutes before starting the cooling fan to ensure even distribution across the pads.
Regular maintenance includes cleaning the pump screen and volute plate to remove debris that can clog the intake. Use a soft brush and mild water to clear any sediment or mineral buildup, then reassemble and test for proper flow before closing the cooler panel.
Store the pump in a dry place if you plan to shut down your system for winter months. Disconnect all hoses and let components dry completely to prevent mold growth or corrosion. When restarting in spring, inspect the pump for any wear or damage before resuming full operation.
Frequently Asked Questions
How do I know which pump fits my evaporative cooler?
Check your cooler's model number and manual for the recommended pump specifications, including flow rate and dimensions. Compare these with the pump's data to ensure compatibility. Many replacements list compatible models explicitly, so matching those ensures a proper fit.
Can I use any pump for my swamp cooler?
No, pumps vary by flow rate, voltage, and physical design. Using an incompatible pump may result in poor cooling, leaks, or motor damage. Always select a pump designed for your cooler's size and electrical requirements to maintain system efficiency.
What causes a pump to run dry?
A pump runs dry when the water tank level drops below the intake, often due to evaporation or leaks. This can damage the motor unless it has dry-burn protection. Regularly monitor water levels and maintain the tank to prevent this issue.
How often should I replace the cooler pump?
Pumps typically last several seasons with proper maintenance. Replace them if you notice reduced flow, unusual noises, or motor failure. Annual inspections before cooling season help identify early signs of wear and extend the pump's lifespan.
Are submersible pumps better than traditional ones?
Submersible pumps are safer for systems with high water levels as they prevent motor damage from water exposure. They often include debris guards and dry-burn protection, making them suitable for larger or commercial coolers. Traditional pumps may suffice for smaller residential units.
Why is my pump making a loud noise?
Loud noises can indicate clogged intakes, worn bearings, or low water levels. Clean the pump screen and check for debris blocking the intake. Ensure the tank is filled adequately and inspect the motor for signs of damage if noise persists.
Do I need special tools to install a cooler pump?
Most pumps require basic tools like screwdrivers to access the pump compartment. Some models include adapters and clear instructions for DIY installation. If your system has complex fittings, consult the manual or seek professional help for proper setup.
How does thermal protection work on these pumps?
Thermal protection monitors the motor's temperature and shuts it off if it overheats, preventing permanent damage. This feature is crucial during periods of low water or high demand. It automatically resets once the motor cools down, allowing normal operation to resume.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
The Dial Manufacturing UL7500, 6017050, and UL11000 stand out as top choices for durability, budget, and submersible features. Each offers unique benefits tailored to different cooler sizes and user needs. Selecting the right pump ensures your system runs efficiently and reliably.
Prioritize factors like flow rate, motor protection, and compatibility to match your specific cooling requirements. Investing in quality features like thermal protection or debris guards can prevent costly repairs. Proper selection extends the life of both the pump and your cooler system.
Remember to check current prices and availability before purchasing to ensure you get the best deal. Prices and stock may change, so verifying listings helps you secure the right pump for your setup. With the right choice, your evaporative cooler will deliver comfortable cooling all season.