6017050 Evaporative Cooler Pump
4.5Editor score
Fits MC18M and MC18V models
Thermal protection against dry running
Simple quick connect installation
In this guide
Finding the right evaporative cooler pump ensures your swamp cooler runs efficiently during the hottest months. A reliable pump circulates water to the cooling pads, maintaining optimal humidity and airflow for comfortable indoor spaces.
We compared ten top-rated pumps based on motor power, flow rate, submersibility, and user feedback. Our analysis focuses on durability, noise output, and installation ease to help you find the best fit for your system.
Each pick highlights key specifications and real-world performance details. Note that product availability and pricing may change over time. Check current listings to ensure you get the best value for your specific cooler model.
Top 3 Picks for Best Evaporative Cooler Pump
UL7500 110-120V Swamp Cooler Pump
5.0Editor score
Fully submersible motor design
Bottom suction with debris guard
Ultra quiet operation
Little Giant CP3-115
4.5Editor score
High 1/30 HP motor
Heavy duty 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 products. It highlights key specifications and unique features to help you quickly identify the pump that matches your cooler size and performance needs.
ProductsSpecificationsEditor scorePrice
Best Budget
Dial Manufacturing UL7500
Noncorrosive flame retardant motor
Removable base plate
Built in optional bleed port
Built in pump screen
4.5Editor score
Editor's Choice
Dial MC8500UL
115V efficient motor
Thermal overload protection
Corrosion resistant bearings
Low noise performance
4.3Editor score
Best Premium
Little Giant CP1-115
1/70 HP concentric motor
115V127V operation
Snap off volute plate
45 degree discharge adapter
4.3Editor score
6017050 Evaporative Pump
Fits MC18M models
3 pin connector
Thermal dry burn protection
Quick connect installation
4.5Editor score
6060050 Ultra Quiet Pump
Fits MC61M models
Dry burning protection
Quiet operation design
Durable components
4.6Editor score
DIAL 1387 UL15000
Manufactured in China
Highly durable build
Easy installation handling
15000 model fit
4.5Editor score
UL11000 110-120V Pump
Fully submersible unit
Bottom suction intake
Dry burn protection
Universal evaporative fit
4.6Editor score
UL7500 Swamp Cooler Pump
Fully submersible motor
Bottom suction with guard
Ultra quiet operation
Compact tight space fit
5.0Editor score
Little Giant CP3-115
1/30 HP motor
563 GPH flow
Snap off volute plate
6 ft cord included
4.5Editor score
Little Giant 542005 CP3-115
1/30 HP rating
Heavy duty motor
Thermal overload protection
90 degree barbed elbow
4.1Editor score
1. UL7500 – Best Overall Evaporative Cooler Pump
UL7500 110-120V Swamp Cooler Pump
Fully submersible design
528 GPH flow rate
Bottom suction intake
Dry burn protection
This pump stands out as the top choice for most users due to its fully submersible design and ultra quiet performance. It achieves a perfect rating thanks to reliable dry burn protection and easy installation steps.
Pros
- Completely submersible motor
- Extremely quiet operation
- Built-in debris guard
- Easy DIY installation
- Compatible with most units
Cons
- May need adapter hose
- Compact size may limit flow
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The bottom suction intake ensures water is drawn from the cleanest part of the tank while the debris guard prevents clogs. This design significantly extends pump life and reduces maintenance frequency for homeowners.
While the compact size fits tight spaces it may require checking hose compatibility for larger systems. The trade-off is acceptable given the noise reduction and reliability improvements over traditional pumps.
Buyers looking for a hassle-free replacement with superior reliability should choose this model. It is ideal for portable and commercial coolers requiring consistent performance without excessive noise.
Submersible Design Advantage
Unlike traditional pumps that require precise water level management this unit sits fully underwater without risk of motor burnout.
Quiet Operation Benefits
The smooth humming noise ensures a comfortable environment in offices or bedrooms where sound levels matter significantly.
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2. 6017050 – Best Budget Evaporative Cooler Pump
6017050 Evaporative Cooler Pump
3 pin connector type
Fits MC18M models
Thermal dry protection
Quick disconnect design
This replacement pump offers an affordable solution for owners of specific cooler models like MC18M and MC17. Its high rating reflects ease of use and reliable basic performance at a low price point.
Pros
- Low cost solution
- Easy plug and play
- Thermal protection included
- Quick installation steps
Cons
- Limited to specific models
- Basic build quality
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The quick connect features and step by step instructions make it accessible for DIY users. It includes thermal protection to prevent motor damage if the water runs low unexpectedly.
Because it fits a limited range of models users must verify compatibility before purchasing. The build quality is functional but may not match premium options for heavy duty use.
Choose this pump if you need a cost-effective fix for a compatible unit. It provides essential functionality without extra features or higher costs.
Quick Connect Convenience
The 3 pin connector simplifies the swap process reducing the need for complex wiring or hose reconnections.
Thermal Safety Features
Built-in protection prevents overheating during low water events which helps avoid costly motor replacements in the future.
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3. Little Giant CP3-115 – Best Premium Evaporative Cooler Pump
Little Giant CP3-115
1/30 HP motor power
563 GPH flow rate
Snap off volute plate
Heavy duty motor
This premium pump delivers high performance with its 1/30 HP motor and 563 GPH flow rate. It is built for durability and is suitable for large commercial or industrial evaporative systems.
Pros
- High flow output
- Durable construction
- Easy cleaning design
- Reliable brand reputation
Cons
- Higher price point
- May be overkill for small units
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The snap off volute plate allows for quick cleaning without removing the entire motor. This feature ensures long term reliability and easy maintenance for professional or frequent users.
The higher cost reflects the heavy duty construction and higher flow capacity. For smaller residential units this may be unnecessary but it guarantees performance in demanding environments.
Buyers prioritizing longevity and high flow should choose this pump. It is ideal for large coolers requiring consistent water circulation and professional grade durability.
High Flow Performance
The robust motor provides strong water circulation which is essential for large commercial coolers to maintain efficiency.
Maintenance Friendly Design
The snap-off volute plate makes cleaning simple and saves time during routine maintenance checks.
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4. Dial Manufacturing UL7500 – Reliable Evaporative Cooler Pump
Dial Manufacturing UL7500
Noncorrosive motor housing
Removable base plate
Built-in pump screen
115V operation
This pump is a trusted standard for many evaporative cooler systems. It features a durable noncorrosive motor housing and a built-in screen to protect internal components from debris.
Pros
- Flame retardant housing
- Built in screen filter
- Removable base for service
- Proven track record
Cons
- Standard flow rate
- Basic mounting options
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The removable base plate allows for straightforward service and inspection without dismantling the entire unit. This practical design reduces downtime during maintenance periods.
It offers solid performance for typical residential needs. While it lacks modern submersible features its reliability makes it a safe choice for traditional setups.
Users with older systems or those seeking a reliable basic pump should consider this model. It balances cost and durability well for standard applications.
Durable Motor Housing
The flame retardant noncorrosive housing protects the motor from corrosion and fire hazards in humid environments.
Built-in Protection
A built-in pump screen prevents debris from entering the motor ensuring longer operational life.
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5. Dial MC8500UL – Efficient Evaporative Cooler Pump
Dial MC8500UL
High-efficiency 115V motor
4000-8500 CFM fit
Thermal overload protection
Corrosion resistant shaft
This pump is designed for efficient circulation in medium to large units. It includes a thermal overload protection system to ensure safe operation during high-demand situations.
Pros
- Efficient circulation
- Quiet performance
- Mounting brackets included
- Mesh filter bag
Cons
- Specific CFM range
- Standard design
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The low noise engineering makes it suitable for office or home environments where quiet is essential. It comes with durable mounting brackets to simplify installation.
It is optimized for units within a specific CFM range so compatibility should be checked carefully. The corrosion-resistant shaft ensures consistent performance over time.
Ideal for medium commercial or large residential units requiring reliable and quiet operation. The included accessories save time during setup.
Efficiency and Safety
The high-efficiency motor paired with thermal overload protection ensures reliable cooling without risking motor failure.
Low Noise Design
Quiet performance ensures a comfortable environment making it suitable for noise-sensitive spaces.
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6. Little Giant CP1-115 – Versatile Evaporative Cooler Pump
Little Giant CP1-115
1/70 HP concentric motor
307 GPH flow rate
Snap-off volute plate
5/8 and 3/4 tubing fit
This versatile pump is ideal for smaller evaporative cooler systems. It features a concentric fan-cooled motor and snap-off volute plate for easy cleaning and maintenance.
Pros
- Versatile mounting options
- Easy to clean design
- Corrosion resistant shaft
- Dual voltage compatibility
Cons
- Lower flow rate
- Higher price for specs
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The versatile mounting options allow it to fit various configurations including sales displays and labs. The corrosion-resistant shaft ensures durability in water environments.
It offers a lower flow rate which limits it to smaller units. The price point may be higher than basic models but the brand reliability justifies it for some users.
Choose this if you need a compact reliable pump for smaller or specialized units. The ease of cleaning is a significant plus for maintenance.
Versatile Applications
Suitable for evaporative coolers labs and water bath circulation making it a flexible choice for various needs.
Easy Cleaning
The snap-off volute plate allows users to clean the pump quickly without special tools.
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7. 6060050 – Quiet Evaporative Cooler Pump
6060050 Ultra Quiet Pump
Fits MC61M models
Dry burning protection
Ultra quiet design
Durable components
This pump is engineered for quiet operation and safe use in residential settings. It fits specific models like MC61M and offers dry burning protection for safety.
Pros
- Low noise operation
- Easy installation
- Safe dry run protection
- Reliable quality
Cons
- Model specific fit
- Basic feature set
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The quick connect design simplifies replacement making it accessible for DIY users. The durable components ensure long-lasting reliable operation.
It is limited to specific models which users must verify. The focus on quiet operation makes it ideal for bedroom or office environments.
Buyers needing a quiet replacement for compatible units should choose this model. It offers essential safety and reliability without extra cost.
Quiet Performance
The ultra quiet design ensures the pump operates silently which is crucial for residential comfort.
Dry Burning Safety
Dry burning protection prevents motor damage if water levels drop unexpectedly.
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8. DIAL 1387 UL15000 – Durable Evaporative Cooler Pump
DIAL 1387 UL15000
Manufactured in China
Highly durable build
Easy installation handling
UL15000 fit
This pump is designed for durability and ease of use in larger cooler units. Users report it is highly durable and easy to install for typical maintenance tasks.
Pros
- Highly durable
- Easy to use
- Simple installation
- Compatible with large units
Cons
- Limited detailed specs
- Generic description
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The product description emphasizes easy handling which suggests a user-friendly design. It fits systems requiring up to 15000 CFM flow capacity.
Information about internal specs is limited but the rating suggests reliable performance. It is a straightforward choice for those needing a robust replacement.
Choose this if you need a durable pump for a large unit without complex installation needs. It balances simplicity with performance.
Durable Construction
The build quality ensures longevity even with regular use in demanding environments.
Installation Ease
Easy handling reduces installation time making it ideal for quick replacements.
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9. Little Giant 542005 CP3-115 – Heavy Duty Evaporative Cooler Pump
Little Giant 542005 CP3-115
1/30 HP motor
Heavy duty concentric motor
Thermal overload protection
90 degree barbed elbow
This pump offers heavy duty performance with a 1/30 HP motor suitable for large systems. It includes a thermal overload protection system for safety.
Pros
- High power output
- Universal mounting
- Thermal protection
- Heavy duty build
Cons
- Slightly lower rating
- Higher cost
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The universal mounting configurations allow it to fit various tank setups. It comes with a 90 degree barbed elbow for easy hose attachment.
While rated highly it has a slightly lower user score than the CP3 model. The heavy duty build makes it a reliable choice for demanding use.
Ideal for commercial or industrial systems needing high power. The universal mounting adds flexibility for different cooler setups.
Heavy Duty Motor
The concentric fan-cooled motor ensures consistent performance under high load conditions.
Universal Mounting
Flexible mounting options make installation easier across different cooler models.
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10. UL11000 – Submersible Evaporative Cooler Pump
UL11000 110-120V Pump
Fully submersible design
660 GPH flow
Bottom suction intake
Dry burn protection
This pump features a fully submersible design that allows it to sit underwater safely. It offers a high flow capacity of 660 GPH for larger systems.
Pros
- Submersible motor
- Bottom suction intake
- High flow capacity
- Easy DIY install
Cons
- Requires submersion
- Specific voltage
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The bottom suction intake with debris guard protects the motor from sediment. This design prevents clogs and extends pump life significantly.
Users appreciate the easy installation steps and the dry burn protection feature. It is suitable for most evaporative and swamp cooler units.
Choose this if you need a reliable submersible pump for a larger system. The debris guard and flow rate make it a strong contender.
Submersible Safety
Being fully submersible allows for flexible placement without worrying about water levels damaging the motor.
Debris Management
The bottom suction intake includes a guard that traps debris before it reaches the pump.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Selecting the right pump requires understanding flow rates and motor compatibility. This guide breaks down the essential factors to ensure you pick a model that fits your system perfectly.
Flow Rate and Capacity
Flow rate determines how much water the pump circulates per hour. It should match the cooler size to ensure optimal cooling efficiency without wasting energy or overworking the motor.
Check the unit's CFM requirements and select a pump with a GPH rating that meets or slightly exceeds that need.
Voltage and Power
Most evaporative cooler pumps operate on 115V or 110V power. Ensure the pump voltage matches your outlet and cooler specifications to prevent electrical issues or damage.
Verify the power cord length and plug type before purchase to avoid extra wiring work.
Submersibility
Modern pumps often feature fully submersible designs that eliminate the need to manage water levels. These units are safer and more reliable for long-term use in various tank sizes.
Choose a submersible pump if you want to simplify maintenance and avoid burnout risks from low water levels.
Noise Level
Pumps are rated by their noise output. For offices or bedrooms, look for models marketed as quiet or ultra-quiet to maintain a comfortable environment.
High-efficiency motors often produce less hum than older or cheaper models.
Protection Features
Look for built-in thermal overload and dry burn protection. These features shut down the motor automatically if it overheats or runs without water, extending its lifespan.
These protections are essential for avoiding costly repairs or premature replacement.
Installation Ease
Some pumps come with quick-connect adapters or snap-off plates for easy cleaning. Check if the model includes mounting brackets or hoses to simplify setup.
Choose a unit with clear instructions and compatible connectors to save time during installation.
Brand and Build Quality
Reputable brands often offer better durability and warranties. Check user reviews for feedback on corrosion resistance and motor longevity.
Invest in a pump with a robust build to ensure it lasts through multiple cooling seasons.
Budget and Value
Prices vary based on power and features. Balance your budget against the required capacity to find a model that offers the best value for your specific use case.
Avoid the cheapest options if they lack critical safety features that protect your investment.
How to Use and Care for Your Evaporative Cooler Pump
Before starting, disconnect power and remove the old pump. Inspect the tank for debris and clean the intake area to ensure smooth operation of the new unit.
Place the pump in the tank and connect the outlet hose securely. Verify the water level is appropriate for submersible models and ensure the intake guard is unobstructed.
Run the pump for a few minutes to check for leaks. Clean the intake screen weekly and flush the system with fresh water to prevent mineral buildup.
Frequently Asked Questions
How do I know which pump fits my cooler?
Check your cooler's model number and CFM rating. Compare these with the pump's specifications to ensure flow and voltage match your unit. Consult your owner's manual or the manufacturer website for exact compatibility details.
What is dry burn protection?
Dry burn protection automatically shuts off the pump motor if it runs without water. This prevents overheating and extends the motor's lifespan by avoiding dry operation damage.
Can I use a pump in any evaporative cooler?
Not always. Pumps are designed for specific voltage and flow requirements. Using one that is too weak or incompatible can lead to poor cooling performance or motor damage.
How often should I replace the pump?
Typically, a pump lasts 2 to 5 years depending on usage and maintenance. Regular cleaning and checking for corrosion can extend its lifespan significantly.
Why is my pump making noise?
Noise can result from clogged intakes or low water levels. Clean the intake screen and ensure the water level is adequate to resolve the issue.
What is the difference between GPH and CFM?
GPH measures water flow in gallons per hour, while CFM measures air movement. You need a pump with a GPH rating that matches the cooler's CFM requirements.
Are submersible pumps better?
Submersible pumps are generally safer and easier to install. They eliminate water level concerns and are less likely to burn out if the tank runs low.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
Our top picks highlight models that balance performance, reliability, and ease of use. The UL7500, 6017050, and Little Giant CP3-115 offer solutions for most residential and commercial needs.
Focus on flow rate, submersibility, and protection features when making your decision. These factors directly impact the longevity and efficiency of your cooling system.
Prices and availability change frequently. Check current listings for the best deals and confirm compatibility before purchasing to ensure a smooth installation experience.