Management Team
Meet our executive management team
Any company in any industry would be proud to see the growth that Comfort Systems USA MidAtlantic has realized over the past few years. We have continued to become an ever-greater regional presence, and we owe much of that to our strong leadership team.
J. R. Griffin
PresidentEducation: Bachelor of Business Administration, Management & Marketing – James Madison University
Registration: ICPM (Institute of Certified Professional Managers) – James Madison University
Trainings: OSHA-10
J. R. joined Comfort Systems USA MidAtlantic as President in 2001 and brings over 43 years of leadership and management experience to his role. During his time at Comfort Systems J. R. has led the MidAtlantic Business Unit to become one of the top performing teams in Comfort Systems’ family of companies. Further, J. R’s. competitive spirit and enthusiasm for our business provides both short term goals and long-term vision for our company. J. R.’s leadership code requires every Associate exhibit the highest character and integrity while helping forge strong relationships with our many repeat customers, suppliers, and other stakeholders. With a strong belief in collaboration among our various internal teams and our customer base, J. R. sets high expectations for all aspects of company performance. While leading the MidAtlantic business J. R. has focused on upgrading our manufacturing and pre-fabrication capabilities along with introducing and accessing the value of technology in our business. J. R.’s core value of Continual Improvement, is aimed at providing a Higher Quality Product in a More Efficient Manner for a Better Customer Experience. Prior to joining Comfort Systems J. R. spent 22 years in manufacturing, holding various senior leadership roles including Plant Manager.
J. R. spends his spare time volunteering in various capacities at his church including the Board of Deacons, as well as, serving on the Executive Board and Board of the Southern Virginia Higher Education Foundation. His commitment to community service has included a variety of organizations including a Board role on the Halifax County Chamber of Commerce. J. R. was proud to receive recognition as the Chamber’s 2019 Business Person of the Year. J. R. and his wife Mary Lynn have three children and enjoy spending time with them and their three grandchildren.
David N. Allen
Vice-President of OperationsEducation: BA Business Administration with concentration in Management – East Carolina University
Registration: Virginia – Qualified Individual for Virginia Contractors License
North Carolina – Qualifier for North Carolina General Contractors License;
Master Licensee for North Carolina Plumbing and Heating Contractors License
David N. Allen, Vice-President of Operations
Neil joined our team in 2006 as a helper working in the field and quickly excelled to become a Mechanical Foreman. During this time, he also attended college to earn his degree. With Neil’s continuous hard work, he was promoted to Project Manager responsible for projects in excess of $23 million dollars. Neil’s project management experience includes education, both K-12 & universities, retail centers, government facilities, medical facilities, parks and recreation centers, and multi-floor office complexes. With his knowledge and experience in both the field and the office, Neil has proven to be an integral part of our Comfort Systems MidAtlantic team and was recently promoted to Vice President of Operations. He is currently responsible for leading 8 Project Managers, 3 with over 25 years of experience in this specific field. Neil also served in the U.S. Marine Corp.
Neil has two children and one granddaughter. In his spare time, he enjoys camping, fishing, and helps coach his son’s baseball team.
Mark R. Glasscock
Executive Vice-PresidentEducation: Danville Community College
Registration: Master HVAC, Master Electrical, Master Plumbing
Trainings: OSHA-10, OSHA-30
Mark is the Executive Vice-President, Chief Estimator, and HVAC Department Manager. Mark has over 57 years of experience in the HVAC/Mechanical field, with 49 years of service here at Comfort Systems USA MidAtlantic. His responsibilities as Executive Vice-President include but are not limited to providing leadership and vision for the company. As Chief Estimator, Mark is responsible for project qualification to determine if the project is a good fit for our company, project estimating to accurately compile the costs to perform a project, and project pricing to be competitive in today’s market. With his detailed involvement in the estimating process, it’s beneficial to our company for Mark to also serve as HVAC Department Manager. It provides him with the insight to appropriately staff our HVAC projects and keep his hands in the actual work and maintain competitive estimates. Mark openly shares his vast knowledge of the trade with our team members and has established many beneficial supplier and customers relationships during his tenure at Comfort Systems MidAtlantic.
Mark and his wife Ann have two daughters and three grandsons. Mark volunteers in various capacities at his church including Trustee, Assistant Treasure, and several committees. His greatest joy is participating in the multiple sports his grandsons are involved playing in, baseball, soccer, basketball, and golf. In the past he has been active in the Dan River Baptist Association Relief Team and has traveled to Texas, Louisiana, and Virginia assisting the Red Cross with feeding and clean up after major hurricanes.
Stephen W. Kent, Jr.
Vice-President/Senior Project ManagerEducation: United States Air Force Community College
Registration: Virginia – Backflow Certification, Master Plumber & Master HVAC; Qualified Individual for Virginia Contractors License
North Carolina – Plumbing Class 1 License
Unites States Air Force Veteran
Stephen W. Kent, Jr., Vice-President/Senior Project Manager
Steve helps lead a team of project managers in the HVAC/mechanical and plumbing contracting business. Steve is also a senior project manager for the company managing numerous projects ranging from $1,000 to $13 million. His current responsibilities include providing leadership and vision for the company, management of employees and projects and providing quality control. Steve is a leader to each of his team members by involving himself in all aspects of the projects from project turnover to project completion which include pre-planning, pre-fabrication, field crew supervision, submittal/operation and maintenance manuals and post job reviews. Steve has 30 years of experience in the HVAC/ mechanical and plumbing fields.
Steve serves his church in many ways and is presently the Trustees Chairman and a member of the Administrative Council. In his spare time Steve loves to play golf and instructs with softball and baseball. Steve is married to Betsy and in their spare time they enjoy spending time with their family and friends. They have one son and two daughters that they are extremely proud of.
Robert M. Marks Jr
CFO/ControllerEducation: Brookdale Community College; Rutgers University
Registration: Industrial Engineering
Trainings: OSHA-10
Bob is the Chief Financial Officer of Comfort Systems USA MidAtlantic. He is detail-oriented and is highly regarded for his leadership and excellence in all areas of finance and accounting. He exhibits exceptional analytical skills, with the ability to examine and understand business needs and deliver comprehensive analysis for external groups while exceeding stringent expectations. Bob has strong collaborative skills with experience working in a team environment, enabling him to effectively work alongside field and office staff. With his detailed involvement in the job costing and labor analysis of projects, he has produced detailed reporting tools that open and effectively bridges the divide/communications channel between field personnel, middle and upper management. Bob manages the financial health of all projects ranging from $1,000 to over $20.0 million. He oversees the accounting department, i.e., payroll, accounts payable, accounts receivable, and billings in addition to developing and implementing departmental budgets.
In his spare time Bob enjoys working out along with working in his garden. Bob has two children and three granddaughters.
Mark A. Gosney
Piping Division ManagerEducation: Associates Degree in Precision Machining – Danville Community College
Continuing Education: During a 29-year industrial career completed formal training in business management, design and energy management for steam, compressed-air and BAS control systems.
Trainings: OSHA-10
Mark is responsible for leading our Mechanical Piping and Plumbing business. Additionally, Mark directs our Piping and Plumbing estimating team, our Piping Prefabrication Department and our CAD/BIM Department. During his 15-year career at MidAtlantic Mark has created the Piping Prefabrication and CAD/BIM Departments to give MidAtlantic the ability to react to our customer’s projects with speed, quality, and accuracy. The preplanning required to prefabricate piping systems results in our ability to deliver fast paced projects that exceed our customer’s expectations. Mark is very active in the professional development of his team and mentors both field and office personnel allowing our company to grow organically to meet our need for quality people at every position on our team.
In his spare time Mark enjoys spending time in his machine and metal fabrication shop at home. Mark is an Elder in his church and serves as a lay speaker at various other churches in the area. Mark and his wife Pill have two children and four grandchildren that also keep them busy.
Keith Newton
Vice President of Estimating & SalesEducation: Air Conditioning and Refrigeration Diploma- Danville Community College and an Associate of Applied Science and Business Management- Danville Community College
Registration: Journeymen HVAC, Journeymen Electrical
Certifications: OSHA 10 & 30, CPR
Keith leads our Construction Estimating and Sales team. He has grown in our business, starting in our Service Department as an HVAC Technician before moving into a Service Sales & Project Management role. Once his tour of duty in our Service business was complete, Keith moved into our Construction Division to lead our Construction Small Project Division as a Sales Engineer. Today, Keith leads our Construction Estimating & Sales team as Vice-President.
Away from work, Keith is a dedicated community member, actively engaged in various roles within his local church as a deacon and various other committees in church and our community. With a lifelong passion for baseball, he serves as both a recreational and travel team coach, contributing significantly to the development of young athletes. Additionally, Keith holds a position on the local Dixie Youth Baseball Board, furthering his commitment to the sport’s growth and organization.
Outside of his professional & volunteer endeavors, Keith, alongside his wife Christy, enjoys traveling with their two sons to participate in tournament play and spend time at the coast. They also indulge in skiing adventures and share interests in gardening, ATVs, local racing events, and golfing, fostering a well-rounded lifestyle centered on family, recreation, and community involvement.
Reid Mizelle
Service General ManagerEducation: B.S. in Biology, Environmental Microbiology Concentration, Roanoke College
Certifications: OSHA 10, CPR
Reid joined our team in April 2024 to serve as our Service General Manager. In this role, Reid leads a cross-functional team of support personnel, field service technicians, and account executives to ensure MidAtlantic is ready and able to support our ever-evolving partner needs. In joining Comfort Systems, Reid brings a unique, customer-centric approach to the MidAtlantic Service group developed during a decade-long career leading various business operations within the Retail industry.
In his spare time, he and his wife, Taylor, enjoy spending time with their growing family, fly-fishing, and all things college football—particularly WVU Mountaineers football.