General & Mechanical Services

General & Mechanical Services Call us for all your data center cooling needs - (410) 349 4070

GMS is a mission-critical mechanical, electrical and plumbing services company mainly serving the Mid-Atlantic region but with customers spanning the nation. Our primary vertical markets served are health care, government, commercial businesses and data centers for all markets.

02/06/2026

More Friday Feelings from GMS - scaled for age of participant!

02/06/2026

Celebrating that Friday feeling after a hard week at GMS! Ice, snow, closures, high workloads - nothing slows us down!

GMS Leadership Promotions – Powered by People, Built From WithinAt General & Mechanical Services (GMS), our growth has a...
08/06/2025

GMS Leadership Promotions – Powered by People, Built From Within

At General & Mechanical Services (GMS), our growth has always been fueled by one core strength: our people.

Today, we’re thrilled to announce the promotion of six exceptional team members—individuals who’ve poured their time, talent, grit, and loyalty into building GMS into the solutions-focused, energy-efficient mechanical and HVAC services provider we are today.

As we evolve from a family-run operation toward a $40 million enterprise, these leaders will be instrumental in guiding our future—while keeping the culture and customer dedication that define us.

Congratulations to Our Newly Promoted Leaders
🔹 Evie Riccio – Director of Human Resources & Office Administration
With GMS since 2006, Evie has been our backbone in HR, compliance, onboarding, benefits, and internal operations. She’s also kept our team connected through IT, facilities, and administrative leadership. In her expanded role, Evie will continue shaping our culture and structure as we scale, ensuring clarity and consistency across our growing team.
🔹 Adele Oliver – Director of Sales & Marketing
Since 2009, Adele has been the strategic force behind our proposals, client relationships, and brand. From winning key accounts to supporting estimating and ops, her impact is everywhere. She’ll now lead our sales and marketing engine—driving pipeline growth, refining messaging, expanding partnerships, and ensuring we show up with professionalism and purpose.
🔹 Michelle McGinty – Director of Finance
Michelle has quietly powered our financial stability since 2012—managing everything from job costing and billing to forecasting and cash flow. In her new role, she’ll go deeper: integrating with project teams, enhancing WIP tracking, and partnering with leadership to drive scalable, profitable growth.
🔹 Tina Barrett – Director of Service Operations
Since 2016, Tina has been the steady hand behind our service department—coordinating labor, resolving issues, and supporting techs. Now as Director, she’ll lead service field performance, elevate KPIs, build technician capabilities, and continue delivering top-tier support to our clients.
🔹 Matt McGinty – Assistant Director of Operations & Service Strategy Since 2021, Matt has proven himself as a cross-functional leader—improving pricing, streamlining processes, and connecting teams. In this new role, he’ll help shape operational strategy, guide pricing models, and support service and project ex*****on at scale.
🔹 Roger Mooney – Senior Technical Solutions Specialist
With GMS since 2002, Roger has led from the field—executing critical projects and mentoring the next generation. He now shifts focus to designing smart, value-driven technical solutions for clients and OEMs—blending hands-on expertise with strategic insight.

Backed by the Best in the Business
These leaders are supported by the skilled professionals who make it all happen—on rooftops, in mechanical rooms, and in the trenches every day.
Special shout-outs to:
• Gene Couples, Senior Service Technician
• Rich Stepp, Senior Service Technician
• Matt Mooney, Service Technician
• Josh Zynell, Senior Steamfitter
• Rudy Ferguson, Senior Steamfitter
…and the entire GMS field crew—your talent and grit are the heartbeat of GMS.
Let’s not forget the powerhouse behind the scenes:
Brad Canfield, Kathy Goodwin, Shayna Buckley, and so many others who keep operations running with consistency, hustle, and integrity.

A Message from Greg Lilly, GMS President
“These promotions aren’t just acknowledgments—they’re investments in the people who will carry GMS into the future. We build from within. We reward performance. We stay true to our culture. I couldn’t be more proud of this team—and of what we’re building together.”

Join Us on the Journey
We're not just growing—we’re growing the right way. Congratulations again to our new leaders and to every team member powering the next chapter of GMS.

We are GMS.
We solve problems.
We deliver solutions.
And we do it as a team.

Old steam pipe the team is currently helping to repair - bottom of a steam condensate line!
01/06/2025

Old steam pipe the team is currently helping to repair - bottom of a steam condensate line!

We get asked a lot about sustainable solutions in the HVAC industry so have put together some top tips we hope you find ...
12/12/2024

We get asked a lot about sustainable solutions in the HVAC industry so have put together some top tips we hope you find useful!

Reduce your HVAC carbon footprint with energy-efficient systems, eco-friendly refrigerants, and smart maintenance. Discover 10 sustainable tips to cut costs and emissions.

11/18/2024

Safely bringing in a 40ft chiller for installation at a customer site! Nice job

GMS is currently hiring pipefitters for the DC Metro area, including Warrenton, VA. Contact us through our Website: http...
08/28/2024

GMS is currently hiring pipefitters for the DC Metro area, including Warrenton, VA. Contact us through our Website: https://gms-hvac.com

In a world that often emphasizes traditional college paths, the skilled trades industry often goes overlooked. However, ...
01/30/2024

In a world that often emphasizes traditional college paths, the skilled trades industry often goes overlooked. However, the demand for skilled professionals, like HVAC technicians, plumbers and electricians, continues to grow. Read the latest GMS blog to understand the benefits of a career in the trades

As the demand for skilled professionals continues to rise, now is an opportune time to consider the many benefits that come with embracing a career in the trades.

Even back in the day, "Neither snow nor rain nor heat nor gloom of night.." could stop us. GMS was there and brought the...
01/22/2024

Even back in the day, "Neither snow nor rain nor heat nor gloom of night.." could stop us. GMS was there and brought the coffee! Hope everyone is now out from under the snow with everything running fine. If not, give us a call!

Whoever said fixing steam leaks wasn't glamorous clearly hasn't met the GMS team! Thanks for the emergency response guys...
01/18/2024

Whoever said fixing steam leaks wasn't glamorous clearly hasn't met the GMS team! Thanks for the emergency response guys and for being prepared to "get salty"!

A heartfelt thank you to the GMS field team at a school site over the holiday period. Their performance was nothing shor...
01/02/2024

A heartfelt thank you to the GMS field team at a school site over the holiday period. Their performance was nothing short of outstanding. The challenges were many, but the determination from the team was stronger! Equally deserving of praise the GMS office team who navigated scheduling conflicts to weather-related concerns, delivery issues and vendor challenges! All handled with remarkable professionalism. Profoundly thankful.

Whether our team members are in the office or out in the field, a recent addition to the team or a seasoned GMS veteran,...
12/22/2023

Whether our team members are in the office or out in the field, a recent addition to the team or a seasoned GMS veteran, a Journeyman or an apprentice, each of them brings a unique contribution that complements our team, leading to our shared success. Our achievements are the result of everyone working together, performing at our best day in and day out. Thank you and heartfelt holiday wishes to our team, partners, customers and vendors.

Address

1007 Skidmore Drive
Annapolis, MD
21409

Opening Hours

Monday 7:30am - 5pm
Tuesday 7:30am - 5pm
Wednesday 7:30am - 5pm
Thursday 7:30am - 5pm
Friday 7:30am - 5pm

Telephone

+14103494070

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