OCP Member | Hyperscale Proven
Shield by Guardian
End-to-End Liquid Cooling Infrastructure Management for Hyperscale and Enterprise Data Centers
Shield handles everything from initial commissioning through ongoing maintenance, keeping your cooling systems running at peak performance 24/7.
Technicians in 20+ Major Cities
Instant Onsite Diagnostic
ISO/IEC 17025
Accredited Lab
Unguided Tier 4 Access
Who We Are
Shield by Guardian: Data Center Coolant Experts
Shield is the data center services division of Guardian, operating as a third party maintenance provider. We operate at the intersection of data center infrastructure expertise, delivering a complete liquid cooling fluid management program. From certified onsite extraction to ISO/IEC 17025 accredited laboratory analysis and full remediation, our model is built for precision, control, and performance inside active, mission critical environments
Data Center Native
Built as a data center first company, designed to operate in live environments with execution aligned to uptime and operational integrity.
Rigorous Fluid Science
High-precision testing and analysis tailored for liquid cooling systems.
Service Excellence
Reliable delivery through certified teams, standardized processes and full accountability.
What We Do
Shield Services
Full Service Program Beyond Testing
Testing Services
Every Shield engagement begins with the full OCP Table 4 baseline panel. For high-density AI, HPC, and mission-critical deployments, our Enhanced tier adds the analytical depth the baseline cannot provide inhibitor concentrations, organic acid profiling, extended metals, and complete microbiological surveillance.
Onsite Diagnostics: Instant results available before technician leaves the floor
Laboratory Analysis: OCP Table 4 Baseline (48hr SLA, ISO/IEC 17025 accredited lab)
Laboratory Analysis: Shield Enhanced Panel (proposed OCP extension for high-density environments)
Microbiological Testing: 48hr Mandatory Incubation + Analysis (Shield Enhanced)
Preventative Maintenance
Proactive maintenance programs are designed to maximize uptime and extend equipment lifespan. Scheduled inspections of pumps, valves, heat exchangers, and control systems prevent costly failures before they occur.
Scheduled Inspections
Pump & Valve Servicing
Filter Replacement
Flushing / Filling/ Refilling
SLA Management
Proactive Maintenance
Maximize Uptime
Fluid Management & Remediation
We precisely monitor and treat cooling fluids, regularly testing pH, conductivity, biological growth, and corrosion to ensure coolant protects your infrastructure. Fluid-agnostic (Shell, Dow, Rinchem, Valvoline) and hardware-agnostic (Vertiv, Schneider, Eaton).
pH adjustment
Inhibitor Replenishment
Glycol Top-offs
System Purges
Full drain-and-refill Flushes
Rack Level Leak Detection
Shield is a TTK Certified Installer. Advanced leak detection with moisture sensors, automated shut-off, and 24/7 monitoring identifies failures before they damage your critical IT assets.
Design, install, and commission FG-NET + FG-DLC rack-level glycol leak detection systems
±1m fault pinpoint accuracy
BMS integration via MODBUS/JBUS
10-year warranty
24/7 Remote Monitoring
Liquid Cooling Management
As a TPM we provide comprehensive end-to-end management of your entire liquid cooling infrastructure, specializing in both direct-to-chip and immersion cooling systems. Our team oversees every aspect of your liquid cooling operations, from continuous CDU monitoring and precise flow optimization to facility-wide thermal performance tuning. We handle real-time performance analytics across your entire data center facility, ensuring your liquid cooling systems operate at peak efficiency 24/7.
CDU Performance Monitoring
Maintenance
Cleaning
Filtration
Flushes
Thermal Load Balancing
Flow Rate Optimization
System Health Analytics
99.99% Uptime
Commissioning & Validation
Our structured commissioning process validates every cooling component meets design specs before go-live, including site surveys, pressure testing, flushing, electrical verification, and thermal performance validation.
Site Survey & Assessment
Pressure & Leak Testing
Electrical Verification
What We Do
Shield Services
Full Service Program Beyond Testing
Commissioning & Validation
System startup, performance validation, and handover
Leak Detection
System installation and functional testing
Testing Services
Coolant chemistry analysis
Maintenance Services
Scheduled preventative maintenance and inspections to sustain performance and reliability
Fluid Management & Remediation
Services to ensure and to restore cooling performance
Decommissioning & End of Life
Controlled shutdown, fluid removal, and equipment disconnection
How It Works
How Shield Services Work
Shield partners with the highest international standard for testing laboratories, delivering some of the fastest turnaround times in the industry. Every ASTM method is performed under accredited scope, with results published to your secure portal.
Certified Laboratory
Shield partners with the highest international standard for testing laboratories, delivering some of the fastest turnaround times in the industry. Every ASTM method is performed under accredited scope, with results published to your secure
portal.
ISO/IEC 17025
2017 Accredited
The highest international standard for testing and calibration laboratories. Accreditation means independent audit of testing methods, equipment calibration, analyst competency, and result traceability — giving operators defensible, analytically valid fluid chemistry data.
✓Independently Audited & Verified
National Coverage
& Rapid Response
Our laboratory partner is positioned at the geographic center of the US logistics network providing access to 80% of US data center markets within one business day by overnight carrier. Samples from any major data center geography arrive within the same freight window, delivering consistent turnaround regardless of site location.
Why Shield
Built for Mission Critical Environments
Every technician holds industry certifications and manufacturer-specific credentials for all major liquid cooling platforms.
Certified Team
Every technician holds industry certifications and manufacturer-specific credentials for all major liquid cooling platforms.
Rapid Response
Guaranteed response times with tiered SLAs. Our distributed team structure ensures a qualified technician is always within reach of your facility.
Nationwide Coverage
Shield operates the largest mobile lab fleet in the U.S., staffed by certified data center coolant technicians and built for independent execution within Tier IV environments.
Compliance & Standards
All services follow OCP-aligned practices and the highest industry standards, with detailed documentation and audit trails for every maintenance activity and system modification.
Proactive Monitoring
Continuous system monitoring identifies potential issues before they escalate. Predictive analytics and trend analysis.
OEM-Agnostic Expertise
We service cooling systems from all major manufacturers including CoolIT, Vertiv, Schneider Electric, and custom-built solutions. No vendor lock-in.
Let's have a conversation about how Shield can protect you.
Beyond Liquid Cooling
Your Full Lifecycle Services Partner
For lifecycle needs beyond liquid cooling, Guardian delivers secure, compliant, and scalable solutions nationwide.
Explore Guardian Services
Secure Onsite Data Destruction
Data Center Services
IT Packing & Logistics
Ready to work together?
Get a quote today and discover how Shield can work with you.