6017050 Evaporative Cooler Pump
4.5Editor score
Fits specific cooler models
Thermal overload protection
Easy quick connect install
In this guide
A reliable evaporative cooler pump is essential for maintaining comfortable temperatures during hot summer months. Without a functioning pump, your swamp cooler cannot circulate water effectively, rendering the system useless against the heat.
We evaluated ten top-rated pumps based on flow capacity, motor durability, noise output, and ease of installation. This list covers universal replacements and specific models designed for various cooler sizes and operational demands.
Each pick highlights key specifications and real-world performance traits to simplify your decision process. Keep in mind that product availability and pricing can change frequently, so always verify current details before purchasing.
Top 3 Picks for Best Evaporative Cooler Pump
Dial Manufacturing UL7500 Pump
4.5Editor score
Noncorrosive motor housing
Built-in pump screen
Removable base plate
Little Giant CP3-115 Pump
4.5Editor score
High flow rate capacity
Concentric fan cooled
Snap-off volute plate
Top 10 Best Evaporative Cooler Pump in 2026 Compared
The following table provides a side-by-side comparison of all ten selected evaporative cooler pumps, highlighting their key specifications and intended applications for easy reference.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Dial Manufacturing UL7500
115V Concentric Pump
Noncorrosive housing
Built-in screen port
Removable base plate
4.5Editor score
Editor's Choice
Dial MC8500UL
Thermal overload protection
Corrosion-resistant shaft
Low noise operation
Includes mounting brackets
4.3Editor score
Best Premium
Little Giant CP1-115
1/70 HP Motor
307 GPH Flow
45 degree adapter
Snap-off volute plate
4.3Editor score
6017050 Replacement
Fits MC18M models
Quick connect disconnect
Thermally protected
Durable components
4.5Editor score
6060050 Ultra Quiet
Fits MC61M models
Dry burning protection
Quiet performance
Durable construction
4.6Editor score
DIAL 1387
15000 Cooler Pump
Highly durable
Easy installation
Made in China
4.5Editor score
UL11000 Pump
100% Submersible
Bottom-suction intake
Dry-burn protection
Universal cooler fit
4.6Editor score
UL7500 Pump
Compact design fit
100% Submersible
Built-in debris guard
Universal cooler fit
5.0Editor score
Little Giant CP3-115
1/30 HP Motor
563 GPH Flow
Corrosion resistant shaft
Snap-off volute plate
4.5Editor score
Little Giant 542005
563 GPH Flow
Thermal overload
Universal mounting
90 deg elbow
4.1Editor score
1. Dial Manufacturing UL7500 – Best Overall Evaporative Cooler Pump
Dial Manufacturing UL7500
115V Concentric Motor
Noncorrosive Flame-Retardant Housing
Built-In Pump Screen
Built-In Optional Bleed-Off Port
The Dial Manufacturing UL7500 stands out as a robust choice for evaporative cooler systems needing a dependable 115V pump. With a rating of 4.5 stars, it offers a solid balance of performance and durability for standard residential or light commercial applications.
Pros
- Durable motor housing material
- Built-in screen reduces clogs
- Removable base for cleaning
- Standard voltage compatibility
- Reliable concentric design
Cons
- Basic mounting features
- May require sealant
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Its noncorrosive and flame-retardant motor housing ensures safety and longevity even in humid environments. The built-in pump screen helps prevent debris from damaging the impeller, while the optional bleed-off port allows for precise water flow control without additional adapters.
While it lacks advanced digital features, its mechanical simplicity means fewer points of failure over time. The removable base plate facilitates easy cleaning, which is crucial for maintaining pump efficiency in areas with hard water or sediment issues.
This pump is ideal for users seeking a proven, no-fuss replacement that aligns with standard cooler specifications. Its construction quality suggests it will handle continuous summer operation without frequent maintenance interventions.
Safety and Durability
The flame-retardant housing adds a critical layer of safety against electrical risks in wet conditions.
Maintenance Friendly
Removable components allow users to clean the unit easily, extending its operational lifespan significantly.
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2. Dial MC8500UL – High-Efficiency Evaporative Cooler Pump
Dial MC8500UL
115V High-Efficiency Motor
Thermal Overload Protection
Corrosion-Resistant Shaft
Designed for 4000-8500 CFM
The Dial MC8500UL targets users with larger evaporative cooler units requiring higher flow rates for optimal performance. Its high-efficiency motor is engineered to circulate water effectively in systems ranging from 4,000 to 8,500 CFM.
Pros
- High-efficiency motor design
- Thermal overload safety feature
- Corrosion-resistant shaft bearings
- Quiet noise performance
- Includes mounting brackets
Cons
- Higher price point
- Specific CFM compatibility
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Thermal overload protection is a key safety feature that prevents motor burnout during high-demand situations or accidental dry runs. This protection extends the life of the pump, making it a reliable long-term investment for commercial or large residential setups.
Engineered for quiet performance, this model ensures that the cooling system does not become a noise nuisance in living or working spaces. The corrosion-resistant shaft and bearings further contribute to its consistency and reliability over multiple cooling seasons.
Buyers should verify their unit's CFM requirements before purchasing, as this pump is optimized for specific capacity ranges. When matched correctly, it delivers robust water circulation with minimal operational noise.
High Capacity Flow
The motor efficiency supports larger cooling units that demand greater water throughput for effective evaporative cooling.
Noise Reduction
Quiet operation ensures comfort, making it suitable for bedrooms or offices where silence is valued.
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3. Little Giant CP1-115 – Best Premium Evaporative Cooler Pump
Little Giant CP1-115
1/70 HP Concentric Motor
115/127 Volts Operation
307 GPH Flow Rate
45 Degree Discharge Adapter
The Little Giant CP1-115 is a highly regarded pump for smaller to medium evaporative cooler applications where precision and build quality are prioritized. Its 1/70 HP concentric fan-cooled motor is designed for thermal reliability and consistent water movement.
Pros
- High-quality fan-cooled motor
- Versatile voltage options
- Snap-off volute plate cleaning
- One-piece corrosion resistant shaft
- Includes 45 degree adapter
Cons
- Limited flow for large units
- Premium pricing
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Versatility is a major strength, as it operates on both 115V and 127V systems, fitting various regional or legacy equipment requirements. The snap-off volute plate allows for easy cleaning without disassembling the entire unit, which simplifies maintenance routines significantly.
The one-piece corrosion-resistant steel shaft ensures structural integrity and prevents common wear issues found in lesser-quality pumps. While it may not suit the largest commercial units, it excels in residential settings and specialized lab or display cooling needs.
This pump is best for those willing to invest in a durable brand with proven engineering standards. It delivers steady performance and ease of maintenance for systems requiring 307 GPH flow at standard head heights.
Flexible Voltage Support
Dual voltage capability ensures compatibility with older or specific regional electrical setups without needing converters.
Easy Maintenance
The snap-off plate design allows users to clean internal parts quickly, reducing downtime during peak summer use.
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4. 6017050 Evaporative Cooler Pump – Best Budget Evaporative Cooler Pump
6017050 Evaporative Cooler Pump
Fits MC18M MC18V Models
3 Pin Connector
Thermal Protection Feature
Quick Connect Install Design
The 6017050 Evaporative Cooler Pump serves as an ideal budget replacement for specific cooler models like MC18M and PFC1500. It addresses the need for an affordable, reliable unit that restores cooling function without expensive professional service calls.
Pros
- Specific model compatibility
- Affordable replacement price
- Thermally protected from heat
- Quick disconnect installation
- Durable component build
Cons
- Model specific fitting
- Limited universal options
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Installation is streamlined with a quick disconnect 'connect connect' mechanism that simplifies replacing the old unit. Thermally protected design prevents overheating during dry runs, ensuring the motor survives accidental operational lapses common in DIY maintenance scenarios.
While it is not a universal fit for all coolers, its targeted compatibility reduces the risk of purchasing the wrong pump type. Users benefit from durable components that promise long-lasting operation within its designed specifications and operational limits.
This pump is best for owners of specific units seeking a direct, cost-effective swap. It offers solid performance and essential safety features to keep your cooler running smoothly throughout the season.
Quick Replacement Process
The quick connect design reduces installation time, making it accessible even for those with limited mechanical experience.
Cost Effective
Lower pricing allows for budget-conscious repairs while still providing essential thermal protection and reliable operation.
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5. 6060050 Ultra Quiet – Low-Noise Evaporative Cooler Pump
6060050 Ultra Quiet
Fits MC61M M250 Models
Ultra Quiet Operation
Dry Burning Protection
Durable Component Build
The 6060050 pump is designed for users who prioritize quiet operation alongside reliable performance in their evaporative cooler systems. With a 4.6 rating, it excels in reducing noise output while maintaining effective water circulation for cooling efficiency.
Pros
- Quiet operational sound level
- Dry burn safety protection
- Fits specific coolers
- Easy installation process
- Durable and reliable
Cons
- Specific model compatibility
- Standard flow rate
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Dry burning protection ensures the pump shuts off automatically if water levels drop too low, protecting the motor from heat damage. This feature is critical for safety and longevity, particularly in areas prone to water supply interruptions or high evaporation rates.
Its construction emphasizes durability with quality components that withstand the rigors of continuous operation. The installation process follows standard quick-connect procedures, making it straightforward for owners to replace older, noisy units efficiently.
For those sensitive to noise or seeking a silent environment, this model is a strong candidate. It balances essential safety features with a design that prioritizes user comfort through reduced acoustic output.
Silent Performance
The ultra-quiet design ensures the pump operates with minimal noise, enhancing comfort in residential spaces.
Safety First
Dry burning protection safeguards the motor against burnout, extending the unit's usable lifespan.
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6. DIAL 1387 – Durable Evaporative Cooler Pump
DIAL 1387
UL15000 Pump Type
Highly Durable Build
Easy Installation Feature
Easy Handling Design
The DIAL 1387 UL15000 pump represents a straightforward solution for users needing a robust and easy-to-use replacement. It is marketed for its durability and ease of handling, making it a practical choice for standard evaporative cooler maintenance needs.
Pros
- Highly durable construction
- Easy to install process
- Lightweight handling
- Proven DIAL brand
- Reliable pump function
Cons
- Basic feature set
- General description
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The product focuses on essential functionality without unnecessary complexity. Its design suggests a build quality capable of withstanding regular use, while the easy installation feature reduces the effort required for swapping out old pumps in existing systems.
Users appreciate the lightweight yet durable design that simplifies the physical aspects of maintenance tasks. While specific technical details are less emphasized, the reputation of the DIAL brand contributes to consumer confidence in its operational performance.
This pump is suitable for those who value simplicity and reliability in their cooling systems. It delivers consistent water circulation to support effective evaporative cooling without demanding complex setup procedures.
Ease of Use
Simple installation reduces labor time, making it accessible for DIY users managing their own cooling maintenance.
Durable Construction
Built to last, the pump resists wear and tear, ensuring it remains operational throughout the cooling season.
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7. UL11000 Pump – Universal Submersible Evaporative Cooler Pump
UL11000 Pump
Fully Submersible Motor
Bottom-Suction Intake Design
Ultra Quiet Operation
Universal Cooler Compatibility
The UL11000 pump distinguishes itself with a fully submersible design that eliminates concerns about water levels damaging the motor. This universal replacement fits most evaporative coolers requiring up to 660 GPH flow, making it versatile for various residential and commercial units.
Pros
- 100% Submersible design
- Bottom-suction intake prevents clog
- Dry-burn protection included
- Ultra quiet performance
- Easy 10-minute install
Cons
- Size may not fit small tanks
- Higher price point
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Its bottom-suction intake with a built-in debris guard effectively traps sediment before it reaches the system, addressing common clogging issues found in traditional side-suction pumps. This proactive protection extends the pump's life and maintains consistent water circulation over time.
Operational noise is minimized to a low hum, ensuring comfort even during continuous use. The dry-burn protection provides an additional safety layer by shutting off the pump if water runs low, preventing motor damage and enhancing safety for homeowners.
This unit is recommended for those seeking a durable, feature-rich pump that simplifies maintenance and prevents common failures. Its comprehensive design ensures reliable cooling performance with minimal user intervention throughout the summer months.
Debris Management
Bottom intake design filters debris early, preventing clogs that typically reduce efficiency in older pump models.
Versatile Fit
Universal compatibility allows it to work with a wide range of cooler brands and sizes without custom modifications.
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8. UL7500 Pump – Compact Submersible Evaporative Cooler Pump
UL7500 Pump
Fully Submersible Unit
Compact Space Saving Design
Ultra Quiet Performance
Universal Cooler Fit
The UL7500 pump offers a compact solution for swamp coolers where space constraints might prevent the use of taller models. It maintains the robust submersible design of its larger counterparts, ensuring reliable performance in a smaller footprint.
Pros
- Compact design fits tight spaces
- 100% Submersible motor
- Built-in debris guard
- Ultra quiet operation
- Simple DIY installation
Cons
- Limited flow for very large units
- Standard features
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With a rating of 5.0 stars, users appreciate its quiet operation and the protection provided by the bottom-suction intake guard. This design traps debris effectively, reducing maintenance frequency and ensuring the water flow remains unobstructed during peak usage.
Installation remains straightforward with included adapters for various hose sizes, allowing for a quick swap of old units. The dry-burn protection ensures safety by shutting off the motor during low-water scenarios, preventing accidental damage or overheating events.
Ideal for smaller residential units or spaces with limited clearance, this pump delivers high performance in a manageable size. It balances space efficiency with essential durability and safety features for consistent cooling output.
Space Efficiency
The compact footprint allows installation in tight compartments where standard pumps may not physically fit.
High Reliability
With a perfect user rating, it consistently meets expectations for durability, ease of use, and quiet performance.
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9. Little Giant CP3-115 – High-Flow Evaporative Cooler Pump
Little Giant CP3-115
1/30 HP Concentric Motor
563 GPH Flow Rate
15000-21500 CFM Support
Snap-off Volute Plate
The Little Giant CP3-115 delivers high-volume water circulation suitable for larger evaporative coolers handling 15,000 to 21,500 CFM. Its 1/30 HP motor ensures strong performance while maintaining energy efficiency for continuous summer operation.
Pros
- High flow capacity
- Heavy-duty fan-cooled motor
- Thermal overload protection
- Snap-off maintenance design
- One-piece steel shaft
Cons
- Higher price than basic models
- Larger physical size
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Key features include a snap-off volute plate for easy cleaning and a one-piece corrosion-resistant steel shaft that enhances durability. Thermal overload protection safeguards the unit against burnout, providing peace of mind for commercial or industrial users.
The pump is built to last, with a design that resists corrosion and supports heavy-duty applications. Its versatility extends beyond cooling systems, making it useful for sales displays and water bath circulation in various settings.
For larger systems requiring robust water delivery, this pump is a top-tier choice. Its engineering prioritizes longevity and ease of maintenance, ensuring consistent cooling performance with minimal downtime.
High Capacity
The 563 GPH flow rate supports larger commercial units that demand more water volume for effective cooling.
Durable Design
Corrosion-resistant materials ensure the pump withstands harsh environments, extending its operational lifespan significantly.
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10. Little Giant 542005 – Heavy Duty Evaporative Cooler Pump
Little Giant 542005
1/30 HP Motor
563 GPH Flow Capacity
Thermal Overload Protection
90 Degree Barbed Elbow
The Little Giant 542005 offers a reliable option for users needing a heavy-duty evaporative cooler pump with proven brand support. It features a 1/30 HP concentric fan-cooled motor that provides consistent circulation for demanding cooling applications.
Pros
- Heavy-duty motor construction
- Thermal overload safety
- Universal mounting options
- High flow rate
- Reliable brand quality
Cons
- Older model variations
- Higher price tier
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Built with universal mounting configurations, it offers flexibility for various cooler setups. The inclusion of a 90-degree barbed elbow with bleed-off simplifies plumbing requirements, reducing the need for additional fittings during installation.
Thermal overload protection ensures the pump shuts down safely under excessive heat conditions. This protection, combined with the durable shaft and heavy-duty housing, ensures longevity in continuous operation scenarios typical of industrial environments.
This pump is best for those prioritizing brand reliability and heavy-duty performance. It delivers consistent flow and essential safety features to maintain effective cooling in large or demanding systems.
Flexible Installation
Universal mounting configurations allow the pump to adapt to various cooler tank layouts and plumbing setups.
Safety Features
Thermal overload protection prevents motor damage, ensuring safe operation during extended periods of high load.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Selecting the right evaporative cooler pump involves considering flow capacity, voltage compatibility, and durability features that align with your specific cooling unit requirements.
Flow Rate (GPH)
Flow rate, measured in Gallons Per Hour (GPH), determines how much water the pump can circulate through your cooler. Matching the GPH to your cooler's CFM rating ensures efficient cooling; too little flow reduces performance, while excessive flow wastes energy and water.
Check your cooler's specifications to find the recommended flow rate and select a pump that meets or slightly exceeds it for optimal results.
Voltage Compatibility
Most residential pumps operate on standard 115V or 120V, but some commercial units may use different voltages. Using a pump with mismatched voltage can lead to poor performance or immediate motor failure.
Always verify the voltage rating of your cooler and choose a pump that matches exactly to ensure safe and reliable operation.
Thermal Protection
Thermal overload protection automatically shuts off the motor if it overheats, such as during a dry run or electrical surge. This feature prevents catastrophic motor burnout and extends the lifespan of the pump significantly.
Prioritize pumps with built-in thermal protection, especially in areas prone to water fluctuations or power inconsistencies.
Noise Level
Noise levels vary significantly between models, ranging from noticeable humming to whisper-quiet operation. If your cooler is near living spaces, a quiet pump is essential for maintaining comfort and avoiding disturbance.
Look for descriptions emphasizing 'quiet' or 'low noise' if you value a peaceful environment while the system is running.
Installation Ease
Installation complexity affects how quickly you can replace an old pump. Quick-connect adapters and snap-off components simplify the process, making it feasible for DIY users without specialized tools.
Select pumps with universal mounting brackets or specific connectors that match your existing hose setup to save time and effort.
Durability and Materials
Materials like stainless steel shafts, corrosion-resistant housings, and durable motors ensure the pump withstands constant exposure to moisture and minerals. Higher quality materials reduce wear and prevent leaks or seizing over time.
Choose models with robust construction materials to minimize maintenance needs and ensure the pump lasts through multiple cooling seasons.
Submersibility
Fully submersible pumps can sit completely underwater without risk of short-circuiting or motor damage. Traditional pumps often have exposed motors that burn out if water levels rise too high.
For peace of mind, opt for a fully submersible design if your cooler tank has variable water levels or potential overflow risks.
Brand Reputation
Established brands often provide better quality control, customer support, and availability of replacement parts. A well-reviewed brand suggests consistent manufacturing standards and reliability.
Research customer reviews and brand history to ensure you are investing in a trusted product with a track record of success.
How to Use and Care for Your Evaporative Cooler Pump
Begin by turning off the power to your cooling unit before attempting any removal or installation steps to ensure safety. Disconnect the hose or tubing from the old pump and unscrew the mounting screws carefully.
Install the new pump by securing it to the mounting points and reconnecting the water supply hoses. Ensure all connections are tight to prevent leaks that could damage the cooler base or surrounding area.
Regularly clean the pump screen or intake grille to prevent debris from clogging the impeller. Perform a full flush of the cooler tank at the start of the season to remove sediment buildup that affects performance.
Frequently Asked Questions
How do I know which pump fits my cooler?
Check the manufacturer's label inside your cooler for the recommended pump model or specifications. Match the voltage, flow rate (GPH), and dimensions to ensure a proper fit. If unsure, consult your cooler's manual or customer support for precise compatibility details.
What is a dry burn protection feature?
Dry burn protection automatically shuts off the pump if it detects water levels are too low, preventing the motor from overheating and burning out. This feature is crucial for safety and longevity, especially if your water supply is intermittent or the tank level drops unexpectedly.
Can I use a pump with higher GPH than recommended?
Using a pump with a slightly higher GPH is generally acceptable, but significantly higher flow can cause water to bypass the cooling pads without absorbing heat efficiently. This can lead to wasted water and reduced cooling effectiveness. Always aim for the recommended flow rate for best results.
Why does my pump make a loud noise?
Loud noise often indicates a worn bearing, a clogged impeller, or air trapped inside the pump. Check for debris in the intake screen and ensure the unit is properly submerged. If the noise persists after cleaning, the motor may be worn and require replacement.
How often should I replace my cooler pump?
Most quality evaporative cooler pumps last for 3 to 5 seasons with proper maintenance. However, if you notice reduced flow, strange noises, or overheating, it may need replacement sooner. Regular cleaning and checking water levels can extend its useful life.
What should I do if the pump runs but no water flows?
This issue usually means there is an air lock, a blockage in the intake, or the impeller is damaged. Turn off the pump, check the intake screen for debris, and ensure the hose is not kinked. If clearing the blockage does not resolve it, the pump may be broken internally.
Are submersible pumps better than traditional ones?
Submersible pumps offer better protection against water level changes since the motor is designed to be fully underwater. They reduce the risk of burning out if the tank overfills, making them a safer option for many residential and commercial cooling setups.
Do all pumps require professional installation?
Most modern pumps are designed for DIY installation with standard connectors and mounting brackets. If you are uncomfortable with electrical work or plumbing, hiring a professional ensures safety and prevents accidental damage to your system. Always follow the manufacturer's instructions carefully.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
The Dial Manufacturing UL7500, 6017050, and Little Giant CP3-115 represent strong options across different budgets and performance needs, offering reliable cooling support for various units.
Prioritize flow rate and safety features like thermal protection to ensure your pump delivers consistent performance without risking motor failure during high-demand periods.
Always verify current product details and pricing before purchase to confirm compatibility and value for your specific evaporative cooling setup.