Kelvin Group, the national industrial and commercial mission-critical refrigeration platform, announced on May 12, 2026 that ARC Mechanical, a Kelvin Group company, has acquired Mullally Bros. Inc., a Troy, New York-based industrial refrigeration and mechanical contractor founded in 1945.
Mullally Bros. is not a generalist contractor. The company built its eight-decade reputation on industrial food and beverage processing and cold storage distribution facilities — specifically within the cheese and dairy industry in the Northeast, as well as specialty applications including the Lake Placid Olympic Complex and municipal ice arenas. That niche expertise is precisely the type of technical depth that PE-backed consolidators are building into their platforms.
The Kelvin Group build-out: Kelvin describes itself as a national leader in mission-critical refrigeration lifecycle services. Its acquisition history spans cold storage, food and beverage, grocery, pharmaceutical, and industrial sectors. As of January 2026, it also completed the merger of JS Compliance and HCG Associates to form Sotera, described as the largest industrial refrigeration compliance organization in the country. Mullally Bros. adds geographic coverage in New England and Upstate New York to that platform.
Why industrial refrigeration is a consolidation target: Industrial refrigeration operates under ammonia and CO2 refrigerant systems that require specialised engineering competency, rigorous safety compliance under EPA Process Safety Management regulations, and 24/7 service infrastructure for food safety-critical applications. The combination of technical barriers to entry, recurring service revenue, and compliance requirements creates a business that is difficult to enter but highly defensible once established. PE platforms like Kelvin are paying premium multiples to acquire the customer relationships and technical bench that take decades to build.
Mullally Bros. President Joe Stump noted that Kelvin Group and ARC Mechanical are the right long-term home for the team and customers, and that their commitment to service, technical excellence, and customer relationships closely aligns with the values that have guided the business for decades.
What the broader M&A pattern signals: The commercial and industrial refrigeration sector is consolidating through the same private equity playbook as residential HVAC services, but with a different customer profile and higher technical barriers. For independent industrial refrigeration contractors in the Northeast and Mid-Atlantic evaluating strategic options, the Mullally Bros. transaction is a current data point on valuation and structure.
