Collage-style promotional graphic featuring photos from Synergy meetings, workshops, and peer group discussions over the past decade with the text “Meet Synergy Member Gary Keeling (HMC)” displayed prominently in the center alongside Synergy’s 10-year anniversary branding.
For Gary Keeling, the past 10 years have been about far more than business growth.

As president of HMC Service Company in Louisville, Kentucky, Gary has spent nearly four decades helping lead the company and 44 years in the mechanical industry. As he prepares for retirement at the end of 2026, he recently reflected on how Synergy has impacted both HMC and his own leadership journey over the last decade.

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Synergy Solution Group is an HVAC peer group designed for independent commercial mechanical contractors who want structured conversations around leadership, service operations, and team development. 

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