For over four decades, National Guardian Enterprises has set the standard in commercial kitchen exhaust system cleaning across the United States. From restaurants and hotels to shopping malls, stadiums, and corporate cafeterias—we help businesses maintain cleaner, safer, and code-compliant kitchens.
We pioneered key innovations like rotary duct cleaners, rooftop grease containment systems, and photo verification reporting—establishing best practices that have become industry gold standards.
We provide a variety of services tailored to your needs. Each service is designed to deliver quality and satisfaction.
Our technicians are individually trained, mentored, and equipped with cutting-edge tools to ensure every job is done with precision, professionalism, and the ability to troubleshoot when needed. Whether you’re a national franchise or a neighborhood café, we deliver consistent results—and peace of mind.
At National Guardian Enterprises, our mission is to set a higher standard in commercial kitchen exhaust system cleaning—through innovation, precision, and unmatched service. We are dedicated to delivering progressive, results-driven solutions that enhance performance, ensure compliance, and protect our clients’ operations. With a commitment to exceptional quality competitive pricing, we strive to exceed expectations on every job, every time.
Founded in the mid-1970s, National Guardian Enterprises was born from a simple but powerful vision: to provide superior, affordable fire protection to the food service industry. Since then, we’ve grown into a nationally trusted partner for restaurants, hotels, shopping centers, stadiums, and commercial facilities across the country.
Our founder and president, Steven Flynn, has spent decades pushing the boundaries of what fire safety services can—and should—look like. A true innovator in this niche trade, Steven helped shape the industry by developing many practices that are now standard, including:
Steven’s leadership has ensured that National Guardian remains both technically advanced and environmentally responsible, blending green innovation with real-world fire protection needs.
We pioneered key innovations like rotary duct cleaners, rooftop grease containment systems, and photo verification reporting—establishing best practices that have become industry gold standards.
Today, National Guardian continues to lead the industry by combining state-of-the-art equipment, rigorous safety standards, and an unshakable commitment to our clients. Whether you manage a local café or a nationwide chain, we treat every facility like it’s our own—because protecting your kitchen means protecting your people, your business, and your future.