Reliable Backup Power When It Matters Most.

At Liberty Maintenance, we provide expert generator services to shelters, charter schools, and nonprofit facilities across New York City. Our goal is to keep your backup power systems ready to activate, so your operations remain uninterrupted during outages or emergencies.

Sub-Services We Provide

Routine generator inspections and diagnostics

Scheduled checks to identify and address performance issues before they become emergencies.

Preventive maintenance and servicing

Regular oil changes, filter replacements, and system tests to maximize generator lifespan and reliability.

Emergency generator repair and troubleshooting

Rapid response to restore power when systems fail – minimizing risk and downtime.

Load bank testing and performance evaluation

Simulated demand testing to ensure your generator operates efficiently under real-world conditions.

Fuel system inspection and fuel quality testing

Checks to ensure adequate fuel supply and purity for smooth generator operation.

Battery testing and replacement

Routine inspection of batteries to prevent startup failure during outages.

Automatic transfer switch (ATS) installation and maintenance

Ensure seamless power transfer during outages through expert ATS service and support.

Generator installation and upgrades

Full-service installation of new units or upgrades to meet your facility's changing needs.

Exhaust system inspection and repair

Verification and maintenance of exhaust systems for safety and regulatory compliance.

Compliance with NYC electrical and safety codes

Services aligned with local codes and inspection requirements for backup power systems.

Coordination with licensed electricians and city inspections

We manage compliance and contractor communication so you don't have to.

Emergency power planning and support

Strategic planning to ensure your facility is never unprepared in a crisis.

Why Liberty for

Generator

Routine generator inspections and diagnostics

Scheduled checks to identify and address performance issues before they become emergencies.

Preventive maintenance and servicing

Regular oil changes, filter replacements, and system tests to maximize generator lifespan and reliability.

Emergency generator repair and troubleshooting

Rapid response to restore power when systems fail – minimizing risk and downtime.

Load bank testing and performance evaluation

Simulated demand testing to ensure your generator operates efficiently under real-world conditions.

Fuel system inspection and fuel quality testing

Checks to ensure adequate fuel supply and purity for smooth generator operation.

Battery testing and replacement

Routine inspection of batteries to prevent startup failure during outages.

Automatic transfer switch (ATS) installation and maintenance

Ensure seamless power transfer during outages through expert ATS service and support.

Generator installation and upgrades

Full-service installation of new units or upgrades to meet your facility's changing needs.

Exhaust system inspection and repair

Verification and maintenance of exhaust systems for safety and regulatory compliance.

Compliance with NYC electrical and safety codes

Services aligned with local codes and inspection requirements for backup power systems.

Coordination with licensed electricians and city inspections

We manage compliance and contractor communication so you don't have to.

Emergency power planning and support

Strategic planning to ensure your facility is never unprepared in a crisis.

Trusted by Organizations Across NYC

We’re proud to support nonprofits, housing organizations, and schools across New York City. Our client relationships are built on trust, transparency, and consistent results.

What Our Clients Are Saying

Liberty Maintenance has been an invaluable partner to Westhab, delivering consistently high-quality service across our facilities. Their commitment to excellence is evident in every aspect of their work—from routine upkeep to urgent repairs.

Jim Coughlin
COO, Westhab

Liberty Maintenance has consistently provided outstanding service to the CUCS facilities. Their staff are courteous, thorough, and proactive—often going above and beyond to ensure that nothing is overlooked.

Greggory Mendenhall
Senior Project Manager, CUCS

Always Ready, Always On

Protect your operations with Liberty’s expert generator services, because downtime is never an option.

Let’s Talk About Your Building’s Needs

Whether you're planning ahead or managing a time-sensitive issue, our team is ready to help. Tell us a bit about your space and we’ll follow up shortly.

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