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NewsRefrigerationRefrigerantsHVAC Breaking News

BREAKING NEWS

HVAC Tech Loses Most of Hands in Explosion, Awarded $75 Million

Tech grabbed line to stop refrigerant from spraying on customers

By Hannah Belloli-Oster
technician-injury.jpg

CHEMICAL INJURY: Brian Mierendorf, 37, has undergone 25 surgeries to retain a semblance of his hands after using them to protect grocery store patrons from spraying liquid R-22. (Courtesy of Marko Law)

June 26, 2025

An HVAC technician and pipefitter journeyman was awarded $75 million by a jury in Oakland County, Michigan, after a defective refrigerant cost him the majority of his hands while he was servicing equipment in a Kroger grocery store back in February of 2022. 

According to the lawsuit complaint, Brian Mierendorf, 37, was asked to service the refrigeration lines within a Kroger in Bloomfield Hills. The lawsuit stated that during maintenance, a refrigeration line began spraying liquid refrigerant into the store. With no shutoff valve nearby, Mierendorf attempted to cap the line, it indicated, but the pressure and volume were too high for him to contain the leak. While trying to cap the line, his left hand froze to it, and he was unable to break free.  

The result?  Mierendorf suffered severe chemical injuries after his hands were injected with R-22 while trying to protect customers by trying to stop the refrigerant during the incident, according to Mierendorf’s attorney Jon Marko.   

Since the incident, Mierendorf has undergone 25 surgeries to retain just a semblance of what his hands once were.  

"Kroger had a ticking time bomb in its store at Bloomfield Township, waiting to blow. Unfortunately, it blew up on Brian, and he lost his hands trying to save other people in the store from toxic chemicals being sprayed out in the middle of the day in front of the meat department," Marko said in a news release. "At trial, Kroger's defense was to blame Brian for his heroic actions. The verdict sends a clear message to Kroger that Brian's actions should be commended, and that Brian literally gave up his hands in the line of duty at the expense of himself and his family is priceless." 

According to the complaint, the refrigerant was pouring out at such a high rate that Mierendorf could hardly breathe as he worked to free his hand from the pipe, resulting in severe chemical burns and the loss of the majority of Mierendorf’s fingers.  

The complaint stated that Kroger controlled both the property and the refrigeration line, yet failed to warn Mierendorf of the “dangerous condition,” neglected to inspect the refrigeration lines before requesting maintenance, did not install shutoff valves within a reasonable distance of the work area, and failed to properly hire, train, supervise, and retain employees responsible for maintaining the refrigeration system. 

In his statement, Marko noted that Kroger failed to provide any maintenance, repair, or inspection records for the refrigeration system during the trial, despite being legally required to do so. He added that the company only produced a partial incident report, completed more than two years after the incident.  Both federal law and local policies mandated that Kroger maintain and document all of this information. 

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KEYWORDS: HVAC industry news refrigerant leaks refrigerant safety

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Hannah belloli
Hannah Belloli is editor-in-chief of Plumbing & Mechanical and Supply House Times. She brings six years of experience as a trade journalist with BNP Media, including four years as an editor at The ACHR NEWS and two years with Walls & Ceilings. Hannah holds a bachelor’s degree in communications from Wayne State University, where she also earned minors in English, journalism, and creative writing. As the daughter of a carpenter, she has long held an appreciation for the skilled trades and the professionals who drive the industry forward.

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