Fielding Environmental is a cleantech company specializing in the recycling of waste solvents, glycols and refrigerants.


Fielding Environmental used nitrogen gas as part of their process in the plant to purge critical lines in the facility. Their existing nitrogen generator had no backup unit so downtime was a possibility in the event of unplanned shutdown or maintenance. When Fielding’s existing generator had a critical failure, they first called their existing service provider, but were told that the nitrogen technician was on vacation and would not be onsite for 3-4 days. They immediately turned to CRU AIR + GAS, and we had our nitrogen specialist on site in less than 1 hr.


CRU AIR + GAS’s nitrogen specialist determined that the carbon bed in the existing nitrogen generator had failed. This is a critical failure on the unit and would need to be replaced at a cost of more than 60% of the unit cost. CRU AIR + GAS was able to find a BOGE nitrogen generator in stock that could be delivered and installed within a week. The unit would include full MODBUS communication capabilities and so Fielding Environmental approved the project immediately.


Fielding Environmental’s RETROFIT system consisted of the following equipment:

  • BOGE N42P Nitrogen Generator w/MODBUS interface for HMI communication
  • BOGE Activated Carbon Filter
  • 120 gallon buffer tank


Fielding Environmental was able to integrate their new BOGE nitrogen generator into their HMI system and have complete visibility on nitrogen production and purity. Their existing generator became an emergency backup to be used during maintenance of the new generator.

Clients Say

“For almost 15 years, CRU AIR + GAS has been our primary compressed air service provider… they balance their focus on efficient compressed air production with our demanding production requirements.”
RC – Maintenance Supervisor
“With the only CEM, CEA, and Qualified AIRMASTER+ Specialist in Ontario, CRU AIR + GAS’ compressed air auditing was comprehensive and easy to understand. Our expectations were high and we were not disappointed!”
TS – Operations Manager
“With CRU AIR + GAS’ help, we were not only able to operate year-round without any lost production time, but could start planning for a move towards optimizing our compressor system to maximize its energy efficiency.”
VP – Maintenance Planner
“[CRU AIR + GAS’] technicians are knowledgeable and available 24/7. Response times are less than an hour even in the middle of the night.”
HS – Maintenance Manager
“CRU AIR + GAS proposed a BOGE SLF 51-3 variable speed drive compressor project. When our LDC’s 3rd party reviewer tried to reduce our Save ON Energy Incentive, CRU AIR + GAS was relentless in arguing the case for the original estimated incentive. In the end, we secured a LARGER incentive than originally estimated. We couldn’t be happier with the final result!”
PL – Plant Manager
“[CRU AIR + GAS] don’t just come in and change spare parts when doing PM service. They examine the entire compressor system and make suggestions they feel will benefit our compressors in the long run. We highly recommend the CRU AIR + GAS team to any company looking for a trustworthy and knowledgeable compressed air service provider.”
RZ – Maintenance Manager
[CRU AIR + GAS’] local approach to the compressor industry provides us with fast, efficient service when we most need it, and their PM department ensures that our maintenance staff is made aware of upcoming service requirements for proper maintenance planning
JD – Corporate Engineer

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