High Performance, Low Maintenance, and Lasting Value
Built in the USA for superior quality and reliability, our evaporative coolers deliver powerful, energy-efficient comfort in dry, arid climates. Each unit is engineered for long-term performance, easy installation, and minimal maintenance — and every cooler must pass rigorous testing and quality control standards before leaving the factory.

Whether you’re cooling a residential space, workshop, or light commercial area, our evaporative coolers provide a natural and efficient way to stay comfortable while reducing energy costs.
Features & Benefits
Variety of Models
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Coverage ranging from 1,370 to 5,024 CFM, providing the right capacity for your space.
Easy Water Connection
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Designed for continuous use with a simple, reliable hookup.
Bolted Construction
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Allows easy access for parts replacement and eliminates welded seams for enhanced rust resistance.
Quiet Performance
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A machine-balanced blower wheel ensures smooth, low-noise operation.
Durable Plastic Reservoir
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Backed by a limited lifetime warranty for lasting confidence.
Powder-Coated Finish
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Polyester interior and exterior coatings resist corrosion and maintain an attractive appearance.
One-Piece Bottom Pan
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Helps prevent leaks and corrosion, extending the life of your cooler.
Optimal in Dry Climates
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Delivers peak performance and comfort where humidity is low.
Designed for Your Space
Up, Down & Side Discharge Options
Choose the discharge configuration that best fits your installation — ideal for homes, shops, and modular applications.
Impact & Weather-Resistant Cabinet
Built with heavy-gauge galvanized steel for lasting durability and protection against the elements.
Energy-Efficient Cooling
Evaporative systems lower energy costs while delivering naturally cooled air — an eco-friendly alternative to traditional air conditioning.
Rigid Media Cooling Technology
Our rigid media pads are crafted from stacked corrugated sheet material designed for maximum cooling efficiency and minimal maintenance. Available in both 8" and 12" media depths, these pads allow air to pass through at a lower velocity, resulting in increased humidity levels and cooler, more comfortable air.
Key Advantages:
- Highest durability and structural integrity
- Extremely long-life cycle
- Consistent cooling performance across seasons
Why Choose Our Evaporative Coolers?
- Proudly American-made and performance-tested for quality assurance
- Energy-saving design that reduces operating costs
- Quiet, durable, and corrosion-resistant construction
- Backed by comprehensive warranties and reliable support
Experience the power of natural, efficient cooling — engineered for comfort, reliability, and long-term performance.
Mastercool® Single Inlet Coolers
Powerful Cooling Performance — Built in the USA for Lasting Comfort
The Mastercool® line of American-made evaporative coolers delivers efficient, eco-friendly comfort designed to keep your space cool, quiet, and cost-effective. Each unit is built to the highest standards for performance and durability, with UL certification and factory-tested quality control for reliable operation season after season.
Engineered for maximum airflow and minimal maintenance, Mastercool Single Inlet Coolers provide a smart, energy-saving alternative to traditional air conditioning — ideal for dry, arid climates where natural evaporative cooling excels.
Model Lineup
ADA / ASA / AUA 51
- ¼, â…“, or ¾ HP motor (sold separately)
- Cools up to 1,650 sq. ft.
- Up to 5,000 CFM industry standard rating
ADA / ASA / AUA 5112
- â…“, ½, or ¾ HP motor (sold separately)
- Cools up to 1,650 sq. ft.
- Up to 5,000 CFM industry standard rating
ADA / ASA / AUA 71
- ¼, ¾, or 1 HP motor (sold separately)
- Cools up to 2,300 sq. ft.
- Up to 7,000 CFM industry standard rating
ADA / ASA / AUA 7112
- â…“, ¾, or 1 HP motor (sold separately)
- Cools up to 2,300 sq. ft.
- Up to 7,000 CFM industry standard rating
Key Features & Benefits
- Built in the USA and UL Classified for safety and quality assurance
- Limited Lifetime Warranty on the non-corrosive thermoplastic water reservoir
- 1-Year Limited Warranty on cabinet and parts
- Equipped with Munters CELdek® rigid media for maximum cooling efficiency
- Polyester-resin coating on the exterior for superior corrosion protection
- Perforated air inlet screen for optimized airflow and easy cleaning
- Weather and impact-resistant construction ensures long-term durability
- Non-corrosive thermoplastic reservoir resists rust and degradation over time
- Media certified to UL GREENGUARD standards for safe, clean indoor air quality
Designed for Efficiency & Reliability
Mastercool Single Inlet Coolers are built to provide maximum performance and minimal maintenance. The rigid media technology allows air to pass at a lower velocity, increasing humidity levels and producing cooler, more comfortable air. With heavy-duty construction, balanced air distribution, and corrosion-resistant materials, these units deliver dependable cooling comfort while reducing energy costs.
Why Choose Mastercool?
Proudly American made and factory tested for reliability
Proudly American made and factory tested for reliability
Energy-efficient operation lowers utility costs
Backed by limited lifetime and 1-year warranties for peace of mind
Enjoy years of worry-free comfort and superior airflow performance with Mastercool® Single Inlet Evaporative Coolers — where quality, efficiency, and durability come standard.