MAXXimizer™ L-40 Package Chiller

The Paul Mueller Company MAXXimizer™ L-40 package chiller is ideal for large traditional and large robotic dairy farms. Four built-in E-Star® HiPerForm® EVC condensing units make it possible to maintain cool milk flow rates of 8,500 pounds per hour (3,724.8 liters per hour). For ease of installation, this plug-and-play unit arrives precharged. Simply connect the glycol plumbing, run the electrical lines, add glycol solution, and the MAXXimizer chiller goes straight to work.

The MAXXimizer L-40 package chiller control features MilkSecure™ technology giving dairy farmers remote, real-time access to their refrigeration system data so they can monitor milk flow rates and temperatures. Farmers can also receive advanced text alerts and download diagnostic reports from the MilkSecure™ dashboard to support equipment troubleshooting efforts.


  • Plug-and-play design makes installation easy and requires minimal plumbing and wiring 
  • Sized for a wide range of operating conditions from 0 to 110 degrees Fahrenheit
  • Measures 13 feet 10 inches long, 7 feet 4 inches high, and 3 feet deep
  • Built with existing components so servicing your equipment is a simple and straightforward process.
  • Hefty 140-gallon propylene glycol reservoir
  • Automatic compressor rolling starts

  • E-Star® HiPerForm® electronic valve control delivers precise and instantaneous refrigerant control
  • System advanced alerts and alert history via MilkSecure™ technology

  • Compatible with R448a and R507 refrigerants
  • Indoor or outdoor installation options

  • Automatic redundant pump control
  • Remote start capability  

Specifications and Sizing

MAXXimizer Package Chiller Assemblies
Horsepower Number of Refrigeration Circuits Voltage Glycol Connections (in)

Flow Range (gpm) 

Head Range (ft)

Btu/hr1 Approximate Shipping Weight Crated (lb)
R-507 Refrigerant
40 4 230/60/3 3 100-300 35-65 340,800 4,800
40 4 460/60/3 3 100-300 35-65 340,800 4,800
R-448a Refrigerant
40 4 230/60/3 3 100-300 35-65 288,000 4,800
40 4 460/60/3 3 100-300 35-65 288,000 4,800
40 4 575/60/32 3 100-300 35-65 288,000 4,800

All MAXXimizer chillers are equipped with two 5-horsepower water circulation pumps.

1 Based on compressor manufacturer's data at 20°F SST and 100°F CT. Actual Btu/hr output and energy usage may vary depending on field conditions.

2 230 V/ 60 Hz fan motor circuit.


Finding the right equipment that fits within your budget can be daunting. At Paul Mueller Company, we understand your needs. That’s why we offer Leasing options that give you more flexibility.

Tell us more about your needs.

Our Dairy Farm Partners

We are proud to partner with these leaders in the dairy farming industry. From legacy farms that have thrived through multiple generations to solar cooling in Africa that is providing young children their first taste of cold milk, our equipment is impacting lives around the world.