6017050 Evaporative Cooler Pump with 3 Pin Connector
4.5Editor score
Fits specific MC18M and MC17 models
Thermally protected from overheating
Easy installation with quick connect
In this guide
An evaporative cooler pump is the heart of any swamp cooler system, circulating water to keep your space cool and comfortable. Choosing the right pump ensures efficient operation and longevity for your cooling unit.
We analyzed ten highly rated models based on flow rates, durability, noise levels, and ease of installation. Our list covers universal replacements and brand-specific options for various cooler sizes.
Each pick highlights key specs and real user feedback to help you decide quickly. Please note that prices and availability change frequently, so check current listings before purchasing.
Top 3 Picks for Best Evaporative Cooler Pump
Little Giant CP1-115
4.3Editor score
High quality concentric fan-cooled motor
Versatile mounting options included
Snap-off volute plate for cleaning
UL11000 110-120V Evaporative Cooler Pump
4.6Editor score
Fully submersible design
Bottom-suction intake with debris guard
Ultra quiet with dry-burn protection
Top 10 Best Evaporative Cooler Pump in 2026 Compared
The following table provides a side-by-side comparison of all ten models to help you compare key specs at a glance.
ProductsSpecificationsEditor scorePrice
Best Budget
Dial Manufacturing UL7500
Noncorrosive motor housing
Removable base plate
Built-in optional bleed-off port
Concentric design
4.5Editor score
Editor's Choice
Dial MC8500UL
115V high-efficiency motor
Thermal overload protection
Corrosion-resistant shaft
Includes mounting brackets
4.3Editor score
Editor's Choice
Little Giant CP1-115
1/70 HP motor
307 GPH flow
45 degree discharge adapter
Corrosion resistant shaft
4.3Editor score
6017050 Evaporative Cooler Pump
Fit for MC18M models
Thermally protected
3 Pin Connector
Quality construction
4.5Editor score
6060050 Evaporative Coolers Pump
Fit for MC61M models
Dry Burning Protection
Ultra Quiet operation
Durable components
4.6Editor score
DIAL 1387 UL15000
Highly durable
Easy to use
Easy installation
Manufactured in China
4.5Editor score
UL11000 110-120V
Fully Submersible
Bottom-Suction Intake
Up to 660 GPH
Dry-Burn Protection
4.6Editor score
UL7500 110-120V
Compact design
Up to 528 GPH
Submersible
Ultra Quiet
5.0Editor score
Little Giant CP3-115
1/30 HP motor
563 GPH flow
45 degree discharge adapter
Snap-off volute plate
4.5Editor score
Little Giant 542005 CP3-115
Heavy duty motor
Thermal overload protection
Universal mounting
Bleed-off included
4.1Editor score
1. Little Giant CP1-115 – Best Overall Evaporative Cooler Pump
Little Giant CP1-115
1/70 HP motor
307 GPH flow
Thermal overload protection
Snap-off volute plate
The Little Giant CP1-115 is a top-rated evaporative cooler pump designed for reliability in various cooling applications. It holds a strong rating due to its durable construction and proven performance in residential and commercial settings.
Pros
- High quality concentric fan-cooled motor
- Versatile mounting options included
- Easy to clean snap-off plate
- Corrosion resistant steel shaft
- Trusted brand reputation
Cons
- Higher price point than generic pumps
- Requires specific tubing sizes
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Its standout feature is the high quality concentric fan-cooled motor which ensures consistent water circulation without overheating. The built-in thermal overload protection adds a critical layer of safety, extending the unit's lifespan even during high demand periods.
Trade-offs include the slightly higher cost compared to budget alternatives, but this is acceptable given the longevity and ease of maintenance. The snap-off volute plate makes cleaning simple without needing full disassembly.
This pump is ideal for users seeking a dependable replacement for swamp coolers ranging from 5000 to 7500 CFM. If you value reliability and ease of maintenance, this model is highly recommended.
Durability and Motor Design
The concentric fan-cooled motor design provides efficient cooling for the pump itself, preventing burnout during continuous operation.
Ease of Maintenance
The snap-off volute plate allows users to quickly clean sediment and debris without tools, ensuring optimal water flow.
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2. 6017050 Evaporative Cooler Pump – Best Budget Evaporative Cooler Pump
6017050 Evaporative Cooler Pump
Fits MC18M models
Thermally protected
3 Pin Connector
Durable components
The 6017050 Evaporative Cooler Pump is an excellent budget option for owners of specific cooler models like the MC18M. It offers solid performance at a fraction of the cost of premium brands while maintaining safety standards.
Pros
- Affordable replacement solution
- Fits specific cooler models
- Thermal protection included
- Easy installation process
- Quality assurance support
Cons
- Limited to specific model numbers
- May require minor adjustments
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Key strengths include the direct fit for common units and the thermally protected motor which prevents overheating when running dry. The 3 pin connector simplifies the swap process, reducing installation time significantly for DIYers.
While it is limited to specific cooler models, this is often an acceptable trade-off for those needing a direct replacement. The customer service promise ensures quick resolution if any issues arise during setup.
This pump is best for cost-conscious homeowners with compatible swamp coolers who want a quick and reliable fix. It restores cooling efficiency without breaking the bank.
Compatibility and Fit
Designed specifically for models like MC18M and MC17, this pump ensures a precise fit without needing custom parts or adapters.
Safety Features
Thermal protection safeguards the motor from damage during dry runs, ensuring safer operation even if water levels drop temporarily.
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3. UL11000 – Premium Evaporative Cooler Pump
UL11000
Fully submersible
Bottom-suction intake
660 GPH flow
Dry-burn protection
The UL11000 is a premium evaporative cooler pump that stands out for its fully submersible design and advanced intake system. It is rated highly for its ability to handle large systems while maintaining a quiet and efficient operation.
Pros
- Fully submersible design
- Bottom-suction prevents clogging
- Ultra quiet operation
- Dry-burn protection
- Universal compatibility
Cons
- Slightly taller than some models
- Higher flow may not suit small units
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Its bottom-suction intake with a built-in debris guard is a major strength, preventing sediment from clogging the pump. This design extends the unit's life and ensures consistent water flow even in tanks with sediment buildup.
While the higher flow rate and larger size might not be necessary for very small units, the durability justifies the choice. The ultra-quiet operation makes it suitable for home offices or quiet living spaces.
This model is ideal for commercial or large residential systems needing robust performance. If you want a pump that handles debris well and runs silently, this is the top choice.
Submersible Technology
The fully submersible construction allows the motor to sit underwater without damage, eliminating risks of short circuits or heat buildup.
Debris Management
The intake grille traps debris at the bottom of the tank, keeping the pump free from clogs and reducing maintenance frequency.
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4. 6060050 – Quiet Evaporative Cooler Pump
6060050 Evaporative Coolers Pump
Fits MC61M models
Dry burning protection
Ultra quiet
Durable construction
The 6060050 Evaporative Coolers Pump is designed for models like MC61M and offers ultra-quiet performance. It provides reliable cooling with protection features that ensure safety during unexpected dry runs.
Pros
- Ultra quiet operation
- Dry burning protection
- Easy installation process
- Quality components
- Customer support included
Cons
- Specific to certain models
- Standard flow rate
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Its dry burning protection is a key strength that automatically shuts off the pump to prevent motor damage. This feature is essential for long-term reliability, especially in areas with variable water supply.
The trade-off is the specific model compatibility, but for owners of these units, it is an excellent direct replacement. Installation is straightforward with clear steps provided by the manufacturer.
This pump is best for those prioritizing low noise levels and safety features. If you want a quiet and safe replacement for your specific cooler, this model fits well.
Noise Reduction
Engineered for ultra-quiet operation, this pump minimizes noise disruption, making it suitable for indoor or office environments.
Safety Mechanisms
Dry burning protection prevents overheating by shutting down the motor when water levels drop, extending the unit's usable life.
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5. Dial Manufacturing UL7500 – Reliable Evaporative Cooler Pump
Dial Manufacturing UL7500
Noncorrosive housing
Removable base plate
Built-in bleed-off port
115V motor
The Dial Manufacturing UL7500 is a robust evaporative cooler pump featuring a noncorrosive and flame-retardant motor housing. It is rated highly for its durability and practical design elements that simplify installation and maintenance.
Pros
- Noncorrosive flame-retardant housing
- Removable base plate
- Built-in pump screen
- Optional bleed-off port
- Standard voltage
Cons
- Standard features only
- Limited flow specifics
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Key strengths include the removable base plate which allows for easier access during cleaning. The built-in pump screen helps prevent debris from entering the system, maintaining optimal performance over time.
While it may lack some advanced features found in newer models, its reliable construction makes it a trusted choice for general replacements. The optional bleed-off port adds flexibility for different cooling configurations.
This pump is ideal for users needing a durable replacement with standard safety features. If you prioritize housing quality and ease of access, this model is a solid pick.
Material Durability
The flame-retardant motor housing resists corrosion and heat, ensuring safe operation even in high-temperature environments.
Maintenance Access
A removable base plate simplifies routine cleaning tasks, allowing you to check and clear the pump without full disassembly.
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6. Dial MC8500UL – High-Efficiency Evaporative Cooler Pump
Dial MC8500UL
High-efficiency motor
Thermal overload protection
Corrosion-resistant shaft
Includes brackets
The Dial MC8500UL is a high-efficiency evaporative cooler pump designed for units covering 4000 to 8500 CFM. It offers thermal overload protection and a corrosion-resistant shaft for consistent long-term performance.
Pros
- High-efficiency 115V motor
- Thermal overload protection
- Low noise operation
- Corrosion-resistant shaft
- Mounting brackets included
Cons
- Designed for larger CFM
- May be overkill for small units
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Its low noise engine is a major strength, ensuring a comfortable environment in homes or offices. The included mounting brackets simplify installation, making it easier to secure the pump correctly.
While designed for larger units, its efficiency means it works well for standard cooling needs without excessive energy use. The corrosion resistance is valuable for humid environments where rust is a concern.
This pump is ideal for larger residential systems needing efficient and quiet operation. If you want high efficiency with added protection, this model is recommended.
Energy Efficiency
The high-efficiency motor delivers strong water circulation with less energy consumption, lowering operating costs over time.
Noise Control
Engineered for quiet performance, this pump reduces noise interference, maintaining a peaceful indoor atmosphere.
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7. DIAL 1387 UL15000 – Durable Evaporative Cooler Pump
DIAL 1387 UL15000
Highly durable
Easy to use
Easy installation
15000 CFM compatible
The DIAL 1387 UL15000 is a durable evaporative cooler pump compatible with systems up to 15000 CFM. It is known for its ease of use and straightforward installation process for most users.
Pros
- Highly durable construction
- Easy to use
- Easy installation
- Compact design
- Compatible with large units
Cons
- Fewer detailed specs
- Standard features
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Its high durability ensures it can withstand demanding conditions without frequent failure. The compact design makes it easier to fit into various cooler configurations without taking up excessive space.
While detailed specs are limited in the provided data, the focus on durability and ease of handling makes it a practical choice. It is designed to get the job done efficiently with minimal fuss.
This pump is ideal for users needing a reliable pump for large coolers. If durability and simplicity are your priorities, this model is a strong contender.
Longevity
Built to be highly durable, this pump handles regular use in large cooling systems without frequent breakdowns.
User-Friendly Design
Easy installation and handling reduce the time needed for setup, making it accessible for DIY maintenance.
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8. UL7500 – Compact Evaporative Cooler Pump
UL7500 110-120V
Compact design
528 GPH flow
Fully submersible
Ultra quiet
The UL7500 Swamp Cooler Pump is a compact evaporative cooler pump designed for systems requiring up to 528 GPH flow. It stands out for its fully submersible design and ultra-quiet operation.
Pros
- Compact design fits tight spaces
- Fully submersible
- Bottom-suction intake
- Ultra quiet operation
- Dry-burn protection
Cons
- Lower flow for small units
- Limited CFM specifics
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Key strengths include the bottom-suction intake with a built-in debris guard to prevent blockages. The ultra-quiet feature ensures it blends into the background without adding unwanted noise to the room.
While the flow rate is lower than larger models, it is ideal for smaller or medium units where space is limited. The dry-burn protection adds an extra layer of safety for continuous use.
This pump is best for compact units needing reliable and quiet circulation. If you need a small pump that handles debris well, this is a top choice.
Space Efficiency
The compact design fits into tight spaces where taller pumps cannot go, making it versatile for older units.
Silent Operation
Runs with minimal noise, ensuring a smooth hum rather than grinding or buzzing sounds during operation.
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9. Little Giant CP3-115 – High-Flow Evaporative Cooler Pump
Little Giant CP3-115
1/30 HP motor
563 GPH flow
Snap-off volute plate
45 degree adapter
The Little Giant CP3-115 is a high-flow evaporative cooler pump with a 1/30 HP motor delivering 563 GPH. It is rated highly for its robust build and thermal overload protection for long life.
Pros
- 1/30 HP high-efficiency motor
- 563 GPH flow rate
- Snap-off volute plate
- 45 degree discharge adapter
- Thermal overload protection
Cons
- Higher price
- Heavy-duty size
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Its 45 degree discharge adapter fits multiple tubing sizes, adding versatility to the installation. The snap-off volute plate makes cleaning easy without needing tools, which is a huge time-saver.
Trade-offs include a slightly higher price, but the quality of the Little Giant brand justifies the investment. The heavy-duty construction is built for systems that run frequently.
This pump is ideal for users needing a high-flow replacement for large coolers. If you value power and ease of cleaning, this model is highly recommended.
High Flow Capability
The 1/30 HP motor provides a strong 563 GPH flow, suitable for systems that require significant water movement.
Versatile Installation
Included adapters allow fitting various tubing sizes, making it adaptable to different existing setups.
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10. Little Giant 542005 CP3-115 – Universal Evaporative Cooler Pump
Little Giant 542005 CP3-115
1/30 HP motor
563 GPH flow
Bleed-off included
Universal mounting
The Little Giant 542005 CP3-115 is a heavy-duty evaporative cooler pump with a 1/30 HP motor. It offers universal mounting configurations and thermal overload protection for safety.
Pros
- 1/30 HP motor
- Heavy duty motor
- Universal mounting
- Bleed-off included
- Thermal protection
Cons
- Lower rating than others
- Standard features
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Its bleed-off feature helps maintain consistent flow and prevents backflow issues during operation. The universal mounting configurations make it a flexible choice for various cooler setups.
While it has a lower rating compared to other Little Giant models, it remains a solid option for those needing a versatile pump. It is built to last under normal conditions.
This pump is best for users needing a flexible replacement. If you require universal mounting and bleed-off capability, this model works well.
Universal Fit
Universal mounting configurations allow the pump to fit a wide range of evaporative cooler models and tank setups.
Flow Control
The included 90 degree barbed elbow with bleed-off helps regulate water flow for better system balance.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Choosing the right pump involves evaluating flow rate, durability, and safety features. This section covers the main factors you should consider before buying.
Flow Rate
Flow rate determines how much water the pump can move per hour. Ensure it matches your cooler's capacity to maintain efficient cooling.
Pick a pump that meets or exceeds your system's GPH requirements for best results.
Voltage Compatibility
Check your cooler's voltage rating to avoid electrical issues. Most pumps run on 115V but some require different inputs.
Always verify voltage match to ensure safe and reliable operation.
Motor Durability
Look for pumps with corrosion-resistant shafts and robust motor housings. Durability ensures the pump lasts through multiple seasons.
Prioritize models with proven build quality to reduce replacement frequency.
Safety Features
Thermal overload protection and dry-burn protection prevent damage during power surges or water shortages. These features extend the pump's lifespan.
Choose a pump with built-in safety mechanisms for peace of mind.
Noise Levels
Pumps with engineered quiet operation are ideal for home use. Noisy pumps can be disruptive in indoor environments.
Opt for ultra-quiet models if you want a calm atmosphere.
Ease of Installation
Quick connect ports and snap-off parts simplify the replacement process. Consider your DIY skills when picking a model.
Select a pump that matches your installation comfort level.
Brand Reputation
Well-known brands often offer better quality control and support. Reliable brands tend to provide longer-lasting components.
Research brand history to ensure a trustworthy purchase.
Maintenance Needs
Pumps with accessible components like removable plates make cleaning easier. Low maintenance reduces long-term effort.
Choose a model that simplifies cleaning to keep performance high.
How to Use and Care for Your Evaporative Cooler Pump
Start by disconnecting power to the cooler and removing the back panel. Remove the old pump by disconnecting the hose and fittings.
Install the new pump by attaching the hose and mounting brackets securely. Check that the intake is submerged and clear of debris.
Turn the power back on and observe the pump for any unusual noise or leaks. Clean the pump screen regularly to maintain flow and prevent clogs.
Frequently Asked Questions
What size pump do I need for my swamp cooler?
The pump size depends on the CFM rating of your cooler. Check your unit's manual or look for a label on the motor. Most residential units need 300 to 600 GPH pumps.
How often should I replace my cooler pump?
Pumps typically last 2 to 5 years depending on usage. If you notice reduced water flow or strange noises, it is time to consider a replacement.
Why is my pump not circulating water?
The most common causes are clogs, dry running, or motor failure. Check the intake screen for debris and ensure there is enough water in the tank.
Can I use any pump for my evaporative cooler?
Not all pumps are compatible. You need a pump that fits your specific model or has universal mounting brackets. Verify voltage and flow rate before buying.
How do I prevent my pump from burning out?
Install thermal overload protection and ensure the pump is submerged properly. Keeping the tank full and cleaning the screen regularly helps prevent overheating.
Is it hard to install a new pump?
Basic DIY skills are enough for most installations. It involves disconnecting wires and hoses, fitting the new unit, and securing it with brackets.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
We reviewed ten top-rated pumps for reliability, noise, and value. The Little Giant CP1-115 stands out for durability while the 6017050 is great for budget buyers.
When choosing, prioritize flow rate and safety features like thermal protection. These ensure your cooler runs efficiently throughout the cooling season.
Prices and stock change often so check the latest listings before you buy. Pick the pump that fits your cooler specs for best results.