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What We Do

Services

Parts supply, field service, and planned maintenance programs for commercial power generation systems — delivered by certified engineers who know the equipment.

Our Capability

End-to-End Power
Generation Support

Whether you need a single AVR module shipped overnight or a full maintenance contract for a multi-unit fleet, CrestGen has the expertise, parts inventory, and field capability to deliver.

We specialize in commercial critical facilities — hospitals, data centers, commercial buildings — where power reliability is non-negotiable.

24/7
Emergency Response
48hr
Parts Dispatch
5+
Brands Supported
USwide
Parts Shipping
Service Lines

Three Ways We Serve You

01
Parts Supply
We stock a comprehensive range of AVR modules, excitation components, and replacement parts for Stamford, Leroy-Somer, Mecc Alte, Cummins, and Onan alternator systems. Orders placed before 2pm ship same day. International air freight available for critical emergency orders.
  • AVR modules — MX321, AS440, MX341, SX460, SX440, DVR2000E, R438, R449 and more
  • Excitation diodes, varistors, and rotating rectifier assemblies
  • PMG assemblies, bearings, capacitors, and droop CTs
  • Control boards and PCB assemblies for Cummins/Onan
  • Same-day dispatch on stocked items before 2pm
  • Nationwide and international shipping available
View Products
02
Field Service & Repair
Our certified field engineers are dispatched directly to your site, equipped with test equipment, tooling, and common parts to diagnose and resolve faults on the day. We cover all major alternator brands and can perform on-site repairs, commissioning, and technical assessments.
  • AVR fault diagnosis and replacement
  • Alternator output and excitation testing
  • Parallel operation setup and droop CT configuration
  • On-site insulation resistance and load bank testing
  • Emergency breakdown response — 24/7
  • Commissioning support for new installations
Book a Visit
03
Planned Maintenance Contracts
A tailored planned maintenance program is the single most cost-effective way to protect your power generation investment. Our PM contracts cover scheduled inspection, cleaning, testing, and replacement of wear items — keeping your systems compliant, reliable, and ready to run when needed.
  • Customized PM schedules — monthly, quarterly, or annual
  • Full inspection reports after every visit
  • Priority parts pricing and discounted labour rates
  • Compliance documentation for health & safety requirements
  • Load bank testing and wet stacking prevention programs
  • Fleet management across multiple sites and units
Get a PM Quote
How It Works

Our Service Process

01
Contact Us
Call, email, or submit the contact form. Describe your fault, part need, or maintenance requirement.
02
Technical Assessment
Our engineers review your requirements and recommend the fastest, most cost-effective resolution path.
03
Parts or Field Visit
We dispatch the parts you need or schedule a field engineer — whichever gets you back online fastest.
04
Verified Resolution
We confirm the fix, provide documentation, and follow up to ensure your system is performing correctly.
Coverage

Brands & Services Matrix

Brand Parts Supply Field Service PM Contracts AVR Modules Emergency Cover
Stamford / AvK ✓ ✓ ✓ ✓ ✓
Leroy-Somer ✓ ✓ ✓ ✓ ✓
Mecc Alte ✓ ✓ ✓ ✓ ✓
Cummins ✓ ✓ ✓ ✓ ✓
Onan ✓ ✓ ✓ ✓ ✓