Service Professional Group Members

SPGroup is the premier association of independently owned and internationally recognized commercial HVAC service providers. We are committed to the principals of delivering the highest standards of service to our customers while providing consistent and continuous training for our employees.

Meet Our Members

Members collaborate to explore, find and share innovative ways to enhance the business environment while ultimately increasing the value we provide to our customers. Through peer group training and forums, the organization leverages our collective experience to create a scalable platform of best practices and services.

Founded in 1951

Perfection Group

Energy Efficient Building Solutions That Maximize Technical And Financial Efficiency

Founded in 1951 in Cincinnati, Ohio, Perfection Group is a family owned and operated business. Today, nearly 65 years later, Perfection is a facility solutions provider servicing multiple cities in 6 states.

Perfection Group has become an industry leader that designs, installs and services mechanical and environmental systems focusing on energy-efficient facility operations for commercial, industrial and institutional customers. The key to the success of our company is integrity, expertise and legendary service to both our associates and customers.


Founded in 1935

Hughes Environmental Engineering

Innovation And Excellence Since 1935

Hughes Environmental Engineering is the LEADER when it comes to the design, installation and service of commercial/industrial HVAC and Refrigeration systems. Our highly-trained and experienced HVACR technicians are the regional experts in resolving challenging problems and finishing urgent projects.

Celebrating more than 80 years of continuous service, Hughes is a growing, family-owned and operated business with over 75 permanent employees who service the metropolitan tri-state area. Current Chairman Frank Hughes’s father, Richard L. Hughes, and his grandfather, Frank W. Hughes founded the company in 1935. Today, the executive team, led by William Glynn, keeps the company growing strong with help from a quality administrative and sales support staff, and 50 top-notch technicians.

Founded in 1946

McCarl's Services, Inc

The Tri-States' Most Comprehensive, Professional Heating And Air Conditioning Service

McCarl's Services Inc. is proud of its heritage and the precepts that Foster McCarl Jr. followed to build the firm from a small residential company to one of the largest mechanical service firms in the United States. With over 40 professionally trained and qualified technicians, we are able to effectively address the HVAC needs of the commercial, industrial and manufacturing markets. And our state-of-the-art capabilities allow us to offer quality maintenance programs at competitive prices.

We are always looking for better ways to serve our customers and improve the operations of our organization. By exercising our high standards of honesty, integrity and effectiveness, we pledge to meet your needs and ensure complete customer satisfaction.

Founded in 1992

The Tustin Group

Bringing Reliability Into Your Building System Processes

Tustin Mechanical Services was formed in 1992 with a vision of delivering high quality mechanical services in the areas of heating, ventilating, air conditioning, and refrigeration (HVACR) to building owners and managers. Our original vision has become a reality with a large number of well-recognized commercial, institutional, and industrial customers throughout the Tri-State Region, encompassing the Delaware Valley, the Lehigh Valley, and Southern New Jersey.

The Tustin Group is equipped today to handle all of our customer’s building system needs, from design and installations to maintenance and repairs, and is the most trusted building systems expert in Pennsylvania, Delaware, New Jersey, Maryland and Washington D.C.

Founded in 1985

Cook's Mechanical Services

Professional HVAC Solutions

Cook’s Mechanical Services is dedicated to serving our clients with exceptional performance and response. Our staff of qualified people are trained to resolve problems, and to make your equipment run more efficiently. Our Vision is to be the leading provider of quality HVAC services through extraordinary teamwork and attitude.

We are a full service HVAC solutions provider, serving Middle Tennessee, East Tennessee, Southwestern Virginia, and Western North Carolina. Check out our locations for the office nearest you. There are many mobile service providers, so what makes CMS special? Ask our customers, and you will find that we have dedicated ourselves to listening to our customers, and providing the services they need.

Founded in 1921

The VETS Group

Building Healthy and Comfortable Environments

The VETS Group is a progressive group of mechanical, sheet metal and service divisions. With an outstanding team of professionals and hundreds of years of combined experience, each division passes the VETS test of HONOUR.

Be it sheet metal, mechanical or air services, VETS has a proven track record in the industry and the community. We have been around long enough to understand the link between quality craftsmanship and superior equipment performance. In fact, it’s not uncommon for us to see original VETS customers with their antique Vets Sheet Metal Supreme furnace doors. This serves as a great reminder that our products are built to last and that our exceptional servicing only adds to this longevity.


Founded in 1968


Building Partnerships

When you choose Naylor as your single-source commercial mechanical, electrical, plumbing, and compressed air partner, you will be working with one of Ontario’s largest and most reputable providers of dependable maintenance, service and installation solutions. Established in 1968, Naylor now employs a highly qualified team of consultants and managers, and over 150 qualified technicians servicing over 2000 customers including educational institutions, commercial buildings, government facilities, industrial plants, and high-rise residential buildings.

Naylor’s supportive and caring work environment empowers its professional team with the resources to become reliable, long-term partners with customers, delivering timely, expertly tested solutions and advice, quality workmanship and above all, ethical business standards. Our service-based delivery model is highly responsive, formally documented and exceptionally communicated ensuring customers operate more efficiently and cost effectively in their own markets.

EMC Mechanical Services

Providing Comprehensive HVAC Services

We are an open shop specializing in plumbing, piping, HVAC, and refrigeration solutions. We also perform design build, fabrication, installation, mechanical retrofit and service and maintenance. Our roots go deep all the way back to 1898 when Gregory & Graham provided heating and cooling solutions with coal. Since then, EMC has evolved over the course of the century from companies such as Catlett-Johnson and Eveready Heating & Plumbing.

Despite the mergers and changes in the industry, EMC remains a hometown company with hometown values. Our hands-on approach and expertise allow us to maximize value without sacrificing excellent in quality or service. From the small, rural church that needs servicing only once a year to the large, urban hospital requiring our expertise with every step of the design and building process, EMC is committed to meeting budgets and deadlines and exceeding expectations.

Founded in 1963


Plan It. Building It. Service It.

Founded in 1963 as a small general and mechanical contractor in Ponce, AIREKO has evolved into the top integrated construction services company in Puerto Rico and the Caribbean Basin. We maintain our traditional multidisciplinary approach in construction services with in-house civil, electrical and mechanical professionals, hands-on pre-construction and construction management multidisciplinary experts, allowing us to leverage our Total Construction Solutions capabilities and tailor our services to our clients’ needs.

Our General Contracting, Construction Management and Specialized Building Maintenance services include concept planning, financial feasibility, site selection analysis, design and permitting management, estimating and procurement, building construction, facility fit out, commissioning and start up. Many clients use our post construction building services as well.

Founded in 2003

Tradesmen Of New England, LLC

HVAC Mechanical Services & Controls Contractor

Founded as a Small business Enterprise (SBE) in 2003, Tradesmen of New England is an HVAC Mechanical Services & Controls Contractor in Connecticut and Western Massachusetts. We have rapidly grown to over 30 employees. One constant throughout our rapid growth has been a dedication to customer service.

Our mechanical capabilities allow us to service and maintain all types of HVAC systems and most types of equipment. Our control capabilities are extensive. We understand and are able to support many types of pneumatic and conventional control systems. Our vast Building Automation System experience allows us to service and install several different manufacturers’ systems.

Founded in 2005

State Mechanical Services

State Mechanical Services was founded in 2005 with a vision to provide outstanding service to our clients in order to build long-term relationships.

Initially seen as an opportunity to create a different kind of HVAC firm, our vision has become a genuine commitment to stand out among our peers.

By following our vision, State Mechanical Services has evolved into a first-rate full-service commercial HVAC Company. Our staff of highly qualified, motivated professionals offers our customers a wide variety of services, including:

  • Conceptual Budget and Cost Estimates
  • Value Engineering Expertise on Mechanical Systems
  • Installation of Commercial and Industrial Piping, Sheet Metal and Control Systems
  • HVAC Maintenance and Repair

Founded in 1952

First Service Air Conditioning Contractors

First Service was established in 1952

L.J. Jeter, the founder, opened the first office in Big Spring, Texas. Mr. Jeter operated the company as Jeter Sheetmetal, Inc. until 1984 when David Grosse purchased the company. Soon after the purchase, the name was changed to First Service Air Conditioning Contractors, Inc. In 1986, the company opened an additional office in Midland, Texas that serves as the main office for the corporation.

The name First Service was selected to show our commitment to service. We have continued to grow each year by maintaining this commitment. First Service is recognized as an industrial leader in West Texas. At our customer’s request, we have provided service and installations throughout Texas, Alaska, Oklahoma, Arizona, New Mexico and Kansas.

Founded in 2012

Rivco Mechanical Services, Inc.

Prompt & Reliable Service Throughout the Entire Coachella Valley

Rivco Mechanical is a full service commercial Heating, Ventilation, Air Conditioning (HVAC) and refrigeration contractor. We work with facilities throughout Riverside County to provide solutions that will reduce operating costs, increase equipment reliability and promote efficiency and sustainability. Our technicians are certified and highly skilled to deliver reliable results and exceed customer expectations.

Rivco Mechanical Services was established in July 2012 through the acquisition of Kennedy Brothers Air Conditioning and Refrigeration. Kennedy Brothers has been a trusted name in HVAC and refrigeration services in the Coachella Valley for more than 40 years.

Founded in 2018

Expert Services

Expert Services was a cold start in 2018 by Carl and Dawn Jobe.  Combined they had 50 years of experience in the HVAC industry prior to the start-up.

Serving the Dallas/Fort Worth metropolitan area, the company’s primary businesses include mechanical and plumbing services.  Last year they installed the first Trane Magnetic Bearing Chiller in North America.


Founded in 1947


We Optimize Buildings and Budgets

Mikkelsen Coward was established in 1947 and acquired by Mitch Zajac in 1996.  Serving Winnipeg and the province of Manitoba, the company’s primary business includes mechanical services, energy services and is an exclusive distributor of Delta Controls.

Understand, Customize & Implement: Buildings are highly dynamic and no two are alike in structure or operation. Understanding how buildings are operating as well as the future goals for the facilities can have a huge impact to the operational spend and bottom line.

Founded in 1999

CE Mechanical

15 Years Serving Southern California

C.E. Mechanical, Inc. is a full-service commercial and industrial air conditioning contractor, specializing in the installation and service of air conditioning systems in the Southern California region. For more than 15 years, we have provided HVAC contractor services that range from complete design-build projects, to new installations, to scheduled maintenance on existing air conditioning and heating equipment.

Our skilled engineers understand the most cost-effective ways to construct air conditioning and heating systems. Because we are able to identify which brands make the most cost-efficient system components, we can easily work within the constraints of a client’s budget to create a high performance system that meets all requirements. We have provided commercial and industrial air conditioning services to a variety of businesses throughout the state.

Founded in 1993

Systemp Corp.

Your Temperature Systems Specialists

SysTemp Corp. is a Michigan based, family owned and operated full service mechanical contractor serving the Detroit metropolitan area. From the basic, to the most sophisticated of automated HVAC systems, SysTemp has engineered, built, and maintained them. In fact, since our founding in 1993, we have installed almost every type of HVAC, process piping, and process ventilation system in the industry.

What sets us apart from all our competition is that we create solutions for the toughest situations that nobody wants to tackle. As a leader in the HVAC industry, our goal is to deliver quality, speed, and cost efficiency to our clients. Thinking outside the box allows us to solve very difficult problems using unique "money saving" technology and strategies that will protect our customers in the short and long-term fields of operation.

Founded in 2002

R&D Mechanical

R&D Mechanical is a family owned Commercial HVAC contactor that has served the Atlanta Metropolitan area since 2002.  The Company is committed to providing each customer the best service possible with offerings that include:

  • Design/Build Construction
  • Retrofit and Replacement
  • Indoor Air Quality
  • Preventive Maintenance
  • HVAC Consulting Services

R&D Mechanical strives to live and work with the highest standards of honesty and integrity with a strong service culture that focuses on building life-long relationships with customers, suppliers, vendors, and team members.

Founded in 1949

Westbrook Service

Westbrook Service has been a recognized leader in HVAC services in Central Florida since 1949.  The Company specializes in Air Conditioning/Heating, Plumbing, Electrical and Gas Services with Commercial Service and Construction Divisions.

The Company continues a long history of “over-the-top” exceptional service with a strong commitment to customers and Westbrook team members. That commitment is captured in the Company’s mission statement:

  • To create an employee experience so profoundly different that it leads to changed lives and customers for life.

Westbrook is a team of building science professionals, expert tradesmen and customer-savvy associates who work together to provide efficient and effective mechanical solutions to their customers.