6017050 Evaporative Cooler Pump
4.5Editor score
Affordable replacement option
Thermal protection included
Easy quick connect install
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 humidity and temperature control in your space.
We evaluated ten top-rated pumps based on flow rate, motor durability, noise levels, and ease of installation. Our analysis focuses on real-world performance data and user feedback to highlight the most dependable options available today.
Each pick below highlights key specifications and ideal use cases for different cooler sizes. Keep in mind that availability and stock levels can change, so verify current details before purchasing your next replacement unit.
Top 3 Picks for Best Evaporative Cooler Pump
UL11000 Evaporative Cooler Pump
4.6Editor score
Fully submersible design
Bottom suction intake
Ultra quiet operation
Little Giant CP1-115
4.3Editor score
High quality motor
Snap off volute plate
Versatile mounting options
Top 10 Best Evaporative Cooler Pump in 2026 Compared
This table provides a side-by-side look at the key specifications and features of each pump to help you compare flow rates, voltage requirements, and unique design elements quickly.
ProductsSpecificationsEditor scorePrice
Best Budget
Dial UL7500
115V motor voltage
Noncorrosive housing
Built in screen
Optional bleed off port
4.5Editor score
Editor's Choice
Dial MC8500UL
4000 to 8500 CFM
Thermal overload protection
Low noise engineering
Corrosion resistant shaft
4.3Editor score
Editor's Choice
Little Giant CP1-115
307 GPH flow rate
115/127V compatible
45 degree adapter
Snap off volute plate
4.3Editor score
6017050 Pump
Fits MC18 models
3 pin connector
Thermal protection
Durable components
4.5Editor score
6060050 Pump
Fits MC61 models
Ultra quiet design
Dry burning protection
5300 CFM support
4.6Editor score
DIAL 1387
UL15000 model
High durability rating
Easy handling design
Simple installation steps
4.5Editor score
UL11000 Pump
660 GPH flow
Fully submersible
Bottom suction intake
Dry burn protection
4.6Editor score
UL7500 Pump
528 GPH flow
Compact design size
Fully submersible
Bottom suction intake
5.0Editor score
Little Giant CP3-115
563 GPH flow rate
1/30 HP motor
15000 CFM support
Snap off volute
4.5Editor score
Little Giant 542005
1/30 HP motor
563 GPH at 1
Heavy duty motor
90 deg barbed
4.1Editor score
1. 6017050 Evaporative Cooler Pump – Best Value Replacement
6017050 Evaporative Cooler Pump
Fits MC18M and V
Thermal protection included
3 pin connector setup
Easy quick connect install
The 6017050 pump stands out as a reliable budget choice for homeowners needing a quick fix for their swamp cooler. It holds a solid rating among users who value straightforward replacement parts that get the job done without complex wiring or tools.
Pros
- Cost effective pricing
- Simple installation process
- Thermal protection safety
- Compatible with common models
- Reliable daily operation
Cons
- Limited to specific models
- Basic build materials
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Its primary strength lies in its direct fit for popular models like the MC18M and MC17. The thermal protection feature ensures the motor does not overheat if water levels drop temporarily. This safety mechanism adds peace of mind for users who run their coolers unattended.
While it lacks premium features like ultra quiet operation or high flow rates, it delivers consistent performance for standard residential units. The quick connect design minimizes installation time, making it an excellent choice for DIY repairs where speed and cost are priorities.
Buyers looking for an affordable solution to restore cooling function should consider this pump. It balances functionality and price well, though you should verify compatibility with your specific cooler model before ordering to ensure a proper fit.
Cost Effective Replacement Solution
This pump offers an affordable way to restore your cooler without spending much on a new unit or professional service.
Thermal Protection Safety
Built-in thermal protection prevents overheating issues that could otherwise lead to motor failure or safety hazards.
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2. Dial MC8500UL – High Flow Performance
Dial MC8500UL High-Efficiency Pump
4000 to 8500 CFM
Thermal overload protection
Corrosion resistant shaft
Low noise engineering
The Dial MC8500UL pump is engineered for larger evaporative cooler systems that demand higher water circulation rates. With a capacity designed for units ranging from 4,000 to 8,500 CFM, it ensures adequate water flow even in demanding commercial or large residential setups.
Pros
- High CFM capacity
- Quiet operation design
- Durable shaft bearings
- Includes mounting brackets
- Safe thermal protection
Cons
- Slightly higher price
- Needs specific CFM match
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Noise reduction is a key focus in its design, making it suitable for office environments or quiet living spaces. The corrosion-resistant shaft and bearings contribute to long-term reliability, while thermal overload protection safeguards the motor against unexpected power or dry running issues.
Installation is straightforward with included mounting brackets and a mesh filter bag to catch debris. While it comes at a slightly higher price point than basic models, the added durability and performance features justify the investment for users needing consistent high volume circulation.
Choose this pump if your cooler system requires robust water movement to maintain cooling efficiency. It is a strong candidate for those prioritizing low noise and long service life over the lowest upfront cost.
High Capacity Support
This pump handles larger CFM ratings effectively, ensuring even the biggest swamp coolers receive sufficient water distribution.
Noise Reduction Features
Engineered for quiet performance, it minimizes distractions in indoor settings where sound levels matter for comfort.
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3. Little Giant CP1-115 – Best Overall
Little Giant CP1-115
307 GPH flow rate
115/127V compatible
45 degree adapter included
Snap off volute plate
Little Giant is a trusted name in pumps, and the CP1-115 reflects this reputation with solid build quality and reliable performance. It is ideal for small to medium evaporative coolers needing consistent circulation without excessive power consumption or complex installation requirements.
Pros
- Proven brand quality
- Versatile mounting options
- Easy cleaning design
- Thermal overload protection
- Flexible voltage support
Cons
- Price higher than generic
- Limited flow rate
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The snap-off volute plate makes cleaning significantly easier than many competitors, reducing maintenance time and preventing debris buildup. Its versatile mounting options and included 45-degree adapter provide flexibility for different tank configurations. Plus, it accepts both 115V and 127V inputs for broader compatibility.
While the flow rate is lower than high-end models, it is sufficient for most home units. The slightly higher cost is offset by the durability and ease of maintenance, making it a smart long-term choice for homeowners who value reliability.
If you need a dependable pump from a known manufacturer, this model is an excellent starting point. It balances ease of use, serviceability, and performance in a compact package that fits many standard applications.
Easy Maintenance Design
The snap-off volute plate allows you to clean the pump quickly without needing specialized tools or disassembly.
Voltage Flexibility
Compatibility with multiple voltages ensures this pump works in varied electrical setups without additional adapters.
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4. 6060050 Evaporative Coolers Pump – Ultra Quiet Option
6060050 Evaporative Coolers Pump
Fits MC61M and V
Dry burning protection
Ultra quiet performance
5300 CFM support
The 6060050 pump emphasizes quiet operation and safety features that appeal to users wanting minimal noise during operation. It is designed for specific MC61 models and includes dry burning protection to prevent motor damage if water levels run low unexpectedly.
Pros
- Very quiet operation
- Dry burning safety
- High user ratings
- Simple installation steps
- Durable component build
Cons
- Specific model fit
- No voltage specs listed
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Users consistently praise its smooth operation and lack of grinding noises, which enhances comfort in living spaces. The installation process mirrors other quick-connect designs, allowing for fast replacement. Quality construction ensures it withstands regular use over time without premature wear.
While it may not offer the highest flow rates, its focus on reliability and low noise makes it a strong contender for residential units. The dry burning protection is a critical safety feature for those who might forget to check water levels frequently.
Consider this pump if noise reduction and safety are your primary concerns. It fits well in smaller setups and provides peace of mind with its protective features and consistent performance.
Ultra Quiet Operation
Designed to minimize sound, this pump runs quietly so you can enjoy comfort without constant noise distractions.
Dry Burning Safety
Thermal protection prevents damage from running dry, extending the motor life and reducing repair risks.
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5. Dial UL7500 – Reliable Standard Choice
Dial UL7500
115V standard voltage
Noncorrosive housing
Built in pump screen
Removable base plate
The Dial UL7500 is a standard concentric pump designed for basic evaporative cooler needs. It features a flame-retardant motor housing and noncorrosive materials that contribute to longevity in humid environments where rust could be an issue.
Pros
- Noncorrosive materials
- Simple maintenance access
- Built in screen
- Flame retardant motor
- Standard voltage compatibility
Cons
- Basic feature set
- No special adapters
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A built-in pump screen helps prevent large debris from entering the impeller, reducing the likelihood of clogs. The removable base plate allows for easier cleaning and maintenance compared to sealed units. This design favors simplicity and ease of use for routine upkeep.
While it lacks advanced features like thermal overload protection or quiet operation, it gets the job done for standard applications. The 115V voltage requirement ensures it fits most standard household electrical setups without needing special wiring.
This pump is ideal for users needing a straightforward replacement without extra frills. It offers durability and basic protection against common issues like corrosion and debris at a reasonable price point.
Corrosion Resistance
Materials selected for the housing resist rust, which is essential for pumps operating in wet and humid conditions.
Basic Screen Protection
A built-in screen catches debris to prevent clogs, extending the pump life with minimal user intervention.
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6. UL7500 Pump – Compact Design
UL7500 Pump
110 to 120V range
Compact dimensions
Submersible design
Bottom suction intake
The UL7500 pump is designed for compact spaces where larger models might not fit. Its 5.9 by 4.7 by 3.9 inch profile allows it to install in tighter tanks while still providing reliable water circulation for standard swamp cooler systems.
Pros
- Compact footprint
- Fully submersible
- High satisfaction rating
- Dry burn protection
- Multiple outlet adapters
Cons
- Lower flow capacity
- Basic motor design
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It is fully submersible, meaning it can sit completely underwater without damage. The bottom suction intake helps avoid clogging by drawing water from the base of the tank. Dry burn protection adds a layer of safety for users who might not monitor water levels constantly.
With a perfect user rating, this pump shows high reliability in real-world conditions. It includes multiple outlet adapters to fit different hose sizes, making it versatile for DIY replacements. The simple design minimizes potential points of failure.
Choose this pump if space is limited in your cooler tank. It offers a balance of size, safety features, and ease of use that suits many standard residential applications effectively.
Compact Footprint
Its small dimensions allow installation in tight spaces where taller pumps cannot fit easily inside the tank.
Bottom Suction Intake
Drawing water from the bottom reduces the risk of clogging and ensures better debris management during operation.
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7. UL11000 Evaporative Cooler Pump – Best Submersible
UL11000 Evaporative Cooler Pump
660 GPH flow capacity
100% submersible
Bottom suction intake
Ultra quiet operation
The UL11000 pump offers a robust solution with a fully submersible design that eliminates water level worries. With a flow capacity of up to 660 GPH, it handles larger systems effectively while maintaining a smooth and quiet operation suitable for indoor environments.
Pros
- Fully submersible design
- High flow capacity
- Very quiet hum
- Dry burn protection
- Simple DIY install
Cons
- Larger dimensions
- Requires tank clearance
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The bottom suction intake features a full-perimeter grille to prevent debris from clogging the system. Dry burn protection ensures the pump shuts off safely if water runs low, protecting the motor from damage. Its simple installation process requires no special tools for most users.
While it has a larger footprint, this design is necessary for the submersible features and high flow rate. The ultra-quiet operation makes it a great choice for homes where noise levels could be a nuisance during summer months.
If you need high capacity and peace of mind regarding water levels, this pump is an excellent choice. Its balance of safety, quiet operation, and flow performance makes it a top contender for many buyers.
High Flow Capacity
With 660 GPH flow, this pump supports larger cooling systems that need more water movement for efficiency.
Water Level Safety
Being fully submersible means you do not need to worry about water covering the motor causing damage.
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8. DIAL 1387 – High Durability Option
DIAL 1387
UL15000 model series
High durability rating
Easy handling design
Simple installation steps
The DIAL 1387 pump is marketed as a highly durable unit designed for straightforward operation. Users note that its handling and installation are simple, requiring minimal effort to get running again after a replacement. It fits well within standard voltage ranges for typical residential coolers.
Pros
- High durability claim
- Simple handling
- Easy installation
- Standard voltage
- Reliable construction
Cons
- Minimal detailed specs
- Basic packaging
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While specific flow rates are less prominent in descriptions, the focus on durability suggests it is built to withstand regular seasonal use. The simple design reduces the number of components that could fail over time. This appeals to buyers looking for a no-frills reliable solution.
The installation process is user-friendly, making it accessible for those with limited technical skills. However, the lack of detailed specs means you should verify dimensions and flow requirements against your specific cooler model before purchasing to avoid mismatches.
Consider this pump if you prioritize durability and ease of use over advanced features. It is a solid option for standard applications where robust construction and simple setup are the main priorities.
Simple Installation Steps
Designed for ease of use, this pump can be installed quickly without requiring specialized tools or skills.
Durable Build Quality
High durability ratings suggest it can handle regular seasonal use without failing prematurely under normal conditions.
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9. Little Giant CP3-115 – Best Premium
Little Giant CP3-115
563 GPH flow rate
1/30 HP motor
High flow capacity
Snap off volute plate
The Little Giant CP3-115 is a premium option designed for larger evaporative cooler systems requiring higher flow rates. Its 1/30 HP motor delivers 563 GPH at 1-foot head, making it suitable for units up to 21,500 CFM. It features the same easy cleaning snap-off volute plate as smaller models.
Pros
- High flow rate
- Premium motor quality
- Easy to clean
- Versatile mounting
- Trusted brand name
Cons
- Higher price point
- Requires specific setup
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The high flow capacity ensures adequate water distribution for commercial or large residential units. Thermal overload protection and a heavy-duty motor enhance reliability. It supports versatile mounting configurations, fitting 5/8 and 3/4 inch tubing without issues.
While the price is higher than standard models, the performance and brand reputation justify the cost for demanding applications. It provides a robust solution where lower flow pumps might struggle to keep cooling pads sufficiently wet for optimal efficiency.
Invest in this pump if your cooler system demands maximum water circulation. It offers the power and durability needed for high-performance cooling environments without compromising on ease of maintenance.
High Flow Rate
Delivering 563 GPH, this pump supports large systems that need extra water flow to maintain cooling efficiency.
Premium Motor Quality
A high-quality motor ensures long-term reliability and consistent performance even under heavy duty usage conditions.
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10. Little Giant 542005 – Heavy Duty
Little Giant 542005
563 GPH at 1 inch
1/30 HP motor
Heavy duty motor
Universal mounting
The Little Giant 542005 is a heavy-duty model offering similar performance to the CP3-115 but with a slightly different design focus. It provides a 563 GPH flow rate and 1/30 HP power, suitable for large-scale cooling systems. The motor features thermal overload protection to prevent damage.
Pros
- Heavy duty motor
- High flow rate
- Universal mounting
- Thermal protection
- Brand reliability
Cons
- Older model rating
- No special features
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Universal mounting configurations make it adaptable to various tank setups without needing custom brackets. While it may have slightly lower ratings than newer models, it remains a solid choice for those needing reliable high flow capacity at a competitive price point.
The lack of specialized features like quiet operation or submersible design means it is best suited for standard setups where performance is the priority. It is a workhorse pump designed for consistent operation in demanding environments.
Choose this pump if you need high flow performance and reliable construction without extra bells and whistles. It offers a proven design that has served many users well over time.
Universal Mounting
Universal configurations allow you to fit this pump into many different tank setups without custom adjustments.
Heavy Duty Motor
A robust motor ensures consistent performance even in high-demand situations where continuous operation is required.
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Buying Guide – How to Choose the Best Evaporative Cooler Pump
Selecting the right pump involves understanding your cooler's requirements and the specific features that affect performance and longevity.
Flow Rate Requirements
Flow rate determines how much water the pump circulates through your cooling pads. It is measured in gallons per hour (GPH). You need a pump that matches or slightly exceeds the flow requirement of your cooler's CFM rating to ensure proper wetting.
Choose a pump with a flow rate that aligns with your cooler size to maintain optimal cooling efficiency.
Voltage Compatibility
Most evaporative cooler pumps operate at standard household voltages like 115V or 110-120V. Some models support dual voltages such as 115/127V. Always check your cooler's power requirements to ensure the pump will connect safely to your electrical supply.
Verify voltage specs on the product label to avoid electrical mismatch issues.
Pump Design and Submersibility
Pumps come in different designs including fully submersible and non-submersible types. Submersible pumps sit entirely underwater, which reduces heat buildup but requires specific tank configurations. Non-submersible units often rely on air cooling and may sit partially above water.
Select a design that fits your tank layout and water level management needs.
Noise Levels
Noise is a significant factor for pumps placed near living or working spaces. Some models feature engineered quiet performance with low hums instead of grinding sounds. Check product descriptions for noise ratings if sound is a priority for your environment.
Prioritize low-noise models for indoor or quiet outdoor settings.
Safety Features
Thermal overload protection is a critical safety feature that prevents the motor from burning out if it overheats or runs dry. Some pumps include built-in screens or debris guards to block particles. These features extend the pump life and reduce maintenance.
Look for pumps with thermal protection and built-in screens for added reliability.
Ease of Installation
Quick-connect designs and included mounting brackets simplify the replacement process. Some pumps come with adapters for different hose sizes, reducing the need for extra parts. This factor is especially important for DIYers who want to minimize installation time.
Choose models with clear instructions and universal adapters for simpler setup.
Material Durability
Pumps operate in wet environments where corrosion can be an issue. Materials like noncorrosive plastic or treated metals help extend the service life. A durable housing and shaft materials are essential for long-term performance.
Opt for pumps with corrosion-resistant materials to ensure longevity.
Brand Reputation
Established brands like Little Giant and Dial often provide better warranties and consistent quality control. Checking user reviews and brand history can help you avoid unreliable products. A reputable brand usually means better support and availability of spare parts.
Prefer well-known brands for reliable support and consistent quality.
How to Use and Care for Your Evaporative Cooler Pump
Before installing your new pump, turn off the power to the cooler unit to prevent electrical shocks. Remove the access panel and disconnect the old pump carefully, noting the hose connections and any wiring details for reference.
Place the new pump in the tank ensuring it sits flat and is not blocked by debris. Connect the hose to the outlet adapter securely using a clamp if needed. Verify the intake is submerged or positioned correctly according to the model instructions.
Regularly clean the pump screen and intake grille to prevent clogs. Check the water level regularly to ensure the motor does not run dry. If your pump has a removable volute plate, take it out periodically to flush out any sediment buildup.
Frequently Asked Questions
What happens if my evaporative cooler pump runs dry?
Running dry can cause the motor to overheat and fail permanently. Most modern pumps include thermal overload protection that shuts them off when they detect high temperatures. However, manual monitoring is still recommended to prevent wear and tear.
How do I know what flow rate I need?
Check your cooler's specifications for the recommended GPH based on its CFM rating. Generally, a pump should provide enough flow to cover all cooling pads. If unsure, consult your cooler manual or a professional technician for sizing.
Can I use a submersible pump in a non-submersible setup?
Submersible pumps are designed to be fully underwater, while non-submersible units use air cooling. Mixing these up can lead to overheating or improper cooling. Always match the pump type to your system's intended design.
Why is my pump making a loud noise?
Loud noises often indicate debris in the impeller or worn bearings. Check the intake screen for blockages first. If the noise persists, you may need to replace the pump as internal components could be damaged.
Do I need a special adapter for my hose?
Some pumps include multiple outlet adapters to fit different hose sizes. If your pump does not include one, you may need to buy a compatible adapter separately. Check the product description for included parts before purchasing.
How often should I replace my pump?
With proper maintenance, a pump can last several seasons. However, if you notice reduced flow or frequent breakdowns, it may be time for a replacement. Regular cleaning can extend its lifespan significantly.
Final Thoughts on Choosing the Best Evaporative Cooler Pump
Our top picks highlight a range of options from budget-friendly replacements to high-performance models. The UL11000 stands out for its submersible design, while the Little Giant CP1-115 offers proven reliability for standard units.
When making your decision, prioritize flow rate compatibility and safety features like thermal protection. Consider whether noise levels and ease of installation matter most for your specific use case to narrow down the best choice.
Keep in mind that availability and stock levels can fluctuate. Always check current listings and reviews before finalizing your purchase to ensure you get the right pump for your evaporative cooler system.