Our maintenance practices and standard services follow manufacturer recommendations, meet client requirements, and draw on our extensive experience with all types of generator and automatic transfer switch (ATS) applications. The result is predictable uptime and zero surprises when the lights go out.
We have more EGSA Certified Field Service Engineers than most of our competitors combined. These certifications and required annual hands-on technical training make us the most qualified in the industry.
When you call, we answer with a LIVE team member, 24/7/365. Our in-house engineering team will ensure that you’re getting the answers you need.
As an independent, non-OEM, service provider, we get to focus on what’s truly best for your equipment. We are at the forefront of industry and code changes. And our advanced software provides full equipment and maintenance visibility.
Preventive, predictive, and professional, LionHeart keeps your systems ready long before the grid decides to quit.
Routine testing and inspections that keep your generator running strong when the power grid doesn’t.
Seamless switching starts here—our ATS maintenance ensures instant response when the lights flicker.
From inspection to testing and calibration, our experts keep your electrical backbone secure and efficient.
We test and service fire pump engines to keep them compliant, reliable, and ready to protect what matters most.
We don’t guess performance—we prove it. Load bank testing ensures your generator delivers the power it promises under real-world demand.
Clean fuel means clean power. We monitor, filter, and maintain your fuel systems to prevent contamination and performance loss.
Tired of radio silence from your current provider? At LionHeart, every request is urgent—no waiting, no excuses. We respond fast, diagnose quickly, and fix problems the first time. If pricing’s been a pain point, we’ll review your current program and find solutions to save without cutting corners. We also know the codes inside and out and offer FREE training for your team to stay compliant. And when other companies can’t figure out what’s wrong with your generator or ATS, our EGSA-certified engineers step in to finish the job. LionHeart doesn’t just show up. We solve what others can’t.
We are so thankful for the quick response and correspondence LionHeart provided to us in our emergency. It was a pleasure working with LionHeart and I would highly recommend your services to anyone who is in dire need!
– Facilities Management, Chicago, IL
