Dedication and Ingenuity

Through vision, hard work, perseverance, as well as persistent focus on doing things right for customers, HVAC Concepts has grown into a premier provider of BAS, EMS and Systems Integration, and 24/7 Remote Monitoring and Alarm Management services for the Building IoT in the Washington, DC area and along the eastern United States.

There are many people that work very hard to make HVAC Concepts successful and without them we would not be able to achieve the level of service and excellence our customers expect and deserve.



Leadership Team

carmineCarmine Mistichelli

Chief Operating Officer / Partner, Fidelity Building Services Group®


Carmine Mistichelli is the Chief Operating Officer / Partner of Fidelity Building Services Group®, parent company of HVAC Concepts. Carmine joined the organization in 1997 as a field team member, learning the fundamentals of Fidelity as well as the HVAC industry. His experience in the field spans more than 20 years.

In his current role at Fidelity BSG, Carmine oversees day-to-day business operations, provides short- and long-term strategic planning and manages business development opportunities by working with investors, developers, owners and management companies of various sizes and complexities.

Carmine’s ingenuity in business and commitment to providing customers with world-class service has secured the organization as a leader in the HVAC and mechanical services industries. His business acumen and management skills have contributed to the company’s growth throughout the Mid-Atlantic region.

An avid philanthropist, Carmine was the 2017 recipient of the Salvation Army of Central Maryland’s Community Commitment Award. He is also a donor to the Greater Baltimore Medical Center (GBMC) and served on the Board of Directors at the United Way of Central Maryland. He currently serves on the board of the Community College of Baltimore County’s (CCBC) HVAC program.

Carmine graduated Cum Laude from Strayer University with a Bachelor of Science in Business. In 2017, he earned a Certificate of Professional Development in Finance from the Wharton School of the University of Pennsylvania.

Philip RedmanPhilip Redman

Vice President & Partner


Philip joined HVAC Concepts in 2006 and became partner in 2008. During his tenure, he has been instrumental in expanding the organization’s business and customer base which has resulted in significant growth in all sectors of the organization. Through his leadership, expertise and vision, Phil helped grow HVAC Concepts from a $3 million a year company to generating $15 million a year. Additionally, the team-member base has grown from 20 Team Members in 2006 to just over 70 today. Most importantly, because of his strong customers relationships, Phil helped grow the organization’s geographical footprint and now services customers who have locations all along the East Coast, including Boston and parts of Florida.

Today, as Vice President and Partner of HVAC Concepts, Phil oversees the organization’s sales force and ensures proper design of equipment to meet customers’ needs. Because of his background in writing/designing of building automation programs, Phil’s extensive knowledge of the industry has made him a trusted voice among HVAC Concepts’ clients. He understands not only the particulars of the industry but also the intricacies of HVAC Concepts, as he first started as a Monitoring Center Supervisor and then moved into sales.

Phil holds a Master HVAC license in Maryland and Virginia, as well as a Mechanical HVAC Journeyman license in Washington, D.C. In addition, Phil holds a 3rd class Steam Engineer license for Washington, D.C. and a 2nd class Steam Engineer license for Maryland.

Patrick SimsPatrick Sims

Director of Service


Patrick Sims is the Director of Service - Field Operations at HVAC Concepts. He leads the organization’s service team by providing technical solutions, supervising technicians, and technical support to Team Members, ensuring workplace safety, and monitoring job site activity, maintenance, and repair sales.

Patrick joined HVAC Concepts in January 2020 as a Service Operation Coordinator, where he provided internal and external customer service, oversaw service fulfillment coordination, and performed administrative functions that supported efficient operations. Shortly after, he was promoted to the position of Project Manager, where he was responsible for planning, developing, coordinating, and directing all aspects of assigned projects.

Before joining the HVAC Concepts team, Patrick was a Sales and Service Project Estimator for Facility Engineering Services. He secured new business opportunities that included increasing the company’s service segment regarding controls and HVAC/Mechanical. He exceeded sales goals for three consecutive years and served as the primary estimator for Erickson Living properties, one of the largest, most respected developers, operators, and managers of continuing care retirement communities in the country.

Patrick has completed various important industry-related training programs, including AHU Control Application training, Orca View OWS Software Delta Building Automation training, and Delta Access Controls training, among several others.

In addition to his technical education, Patrick holds a Bachelor of Arts degree in Christian Studies, with an emphasis on biblical literature, and a Master of Divinity degree from Grand Canyon University. A veteran, Patrick proudly served our country as a member of the United States Air Force.

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