portrait of grc leadership

GRC Mechanical Services was established in 1948 as a refrigeration service organization.

Today we are a full service HVAC&R mechanical contractor with many long-time and loyal commercial and residential clients. We think that fact speaks to the uncompromising quality of our work.

GRC Mechanical Services is owned and operated by two professional engineers who are cousins, Fred G. Russenberger, Jr., PE. and John P. Russenberger, PE.

Our company is broken into three departments Service, Installation, and Engineering.

The Service Department's primary function is to:

  • Implement maintenance programs
  • Reduce clients operating expenses
  • Minimize expensive breakdowns
  • Remote monitor equipment operation and
  • Provide prompt service in the event of a breakdown

Through our Service Department we provide technical solutions that promote a relationship and instill confidence with our clients. This is the foundation for the Engineering Department's design build services.

Eighty percent of our installation work comes from our existing clients for whom we design the entire system or are called upon to comment on their existing design. Our Installation Department will then utilize its duct fabrication and installation, rigging, pipe fitting, plumbing, and control wiring capabilities to complete the task.

GRC Mechanical Services received the Carrier® Corp. President’s Award, one of the manufacturer’s highest honors for its local dealers, for five years!

President’s Awards are presented annually to an elite group of Carrier dealers who exemplify the company’s model for operational excellence, business effectiveness and delivering the best in cutting-edge technology to consumers. Carrier also awards dealers who are committed to providing excellent customer service and who are dedicated to the Carrier brand. Winners go above and beyond the call of duty in the industry with a dependable, customer-focused work ethic.


The key to our success is the dedication to the highest quality of technical capability and customer service by our staff. All of our staff are required to have an education in the fundamentals of their area of expertise.  Training is then provided on the specific brands that we represent.

All technicians are required to be NATE Certified and indoctrinated in our company procedures and philosophies before interacting with a client.

This process has produced the following Awards:

  • ACCA Commercial Contractor of the Year Award
  • 5-Time Carrier® Presidential Award Winner

Performance incentives which are awarded regularly are derived from the individual as well as the overall staff  performance.  The company’s success is a byproduct of the success of our staff. Incentives, retirement programs, quality health coverage, and other employee benefits are our key to attracting and retaining our valued staff.


GRC Mechanical Services growth rate is healthy but is being monitored so that we maintain our high standard of service our clients have become accustomed to.

In an era of automation and declining quality customer service we strive to hold on to the personal service of yesterday. That’s why at GRC Mechanical Services you will always be greeted by a friendly informed staff that knows your name and can assist in expediting results.

Every period in time brings new challenges. In the nineties it was refrigerant phase outs and deregulation of utilities; in the new millennium it is rising energy costs and a shrinking workforce.

We have already begun to focus our attention towards these challenges and will use a combination of new technology, and good old fashioned customer service to serve our clients in the future.


  • Air Conditioning Contractors Of America (ACCA)
  • ACCA is the largest association of HVACR contractors and the preferred service provider for members in all 50 states and worldwide.