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Sound Partners’ Marathon HVAC Services Acquires Design Air

Los Angeles, CA – July 27, 2023 – Marathon HVAC Services, a leading provider of residential HVAC services in Southern California and portfolio company of Sound Partners, is pleased to announce the acquisition of Design Air. The strategic acquisition expands Marathon’s geographic coverage across Greater Los Angeles, adds proven key leaders, and further expands capabilities into electrical and plumbing services. 

Design Air is a family business established in 2001 serving the Inland Empire with exceptional HVAC, plumbing, and electrical services. Marathon is partnering with Design Air’s founder Paul Davidson and his daughter, Megan Davidson, in this transaction as they take on key leadership roles within the company.

“This partnership will allow us to continue doing what we do best, and we are confident that Sound brings the resources to take the combination of Marathon and Design Air to the next level.,” said Paul Davidson. “Over the years, our business has grown consistently by establishing long-term, trusting relationships with our customers and the local communities that we serve. Megan and I are excited to be part of the team at Marathon and continue to drive our dedication to excellence.”

Megan added, “Marathon shares the same family values that Design Air has operated under since we started, and this is why we chose Sound and Marathon as our partners to grow the business.” 

This acquisition marks another milestone for Marathon HVAC Services as it expands its footprint in the Los Angeles market into the Inland Empire, and further diversifies its service offering into plumbing and electrical services. Under Sound Partners’ ownership, Marathon has successfully combined 5 Southern California-based family-owned businesses with more than 125 years of combined history, establishing the company as a leading brand in the region.

“We are excited to partner with Paul and Megan and complete the Marathon leadership team. They bring decades of experience operating a family-owned HVAC and plumbing services business that embodies the culture that we built at Marathon. We are humbled they have chosen us as stewards of Design Air’s next stage of growth, and we look forward to the impact that their leadership brings across the entire company,” said Zepher Loesch, Managing Partner at Sound Partners.

Marathon HVAC Services continues to see exceptional growth and is actively adding skilled HVAC technicians to service its over 25,000 customers throughout the greater Los Angeles, North Orange County, and Inland Empire geographies. The company’s expansion through strategic acquisitions and operational enhancements reflects its commitment to delivering excellence to customers while fostering growth and opportunities for employees.

About Sound Partners:

Sound Partners is a lower-middle market private equity fund focused on investing in companies with $2-$20 million in revenue across various sectors. Sound provides companies with operational and strategic support to help accelerate growth and drive long-term value creation. Sound is focused on investing in family and founder-owned businesses looking for support in transitioning to their next phase of growth and professionalization. Sound brings the collective experience of investors that have deployed over $1 billion of capital in private transactions and operators with substantial experience across industries including construction, facility services, distribution, and manufacturing.


About Marathon HVAC Services

Marathon HVAC Services is a leading residential HVAC company based in Los Angeles, CA. Founded in 1990, the company has built a strong reputation for providing exceptional service and customer satisfaction. Marathon HVAC Services offers a comprehensive range of heating, ventilation, and air conditioning solutions for homeowners throughout Southern California. For more information, visit www.marathonhvac.com.

For Any Inquiries

Gavin Smith, Media Relations

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