• The company serves the commercial, institutional and industrial HVAC markets. GRR Cooling focuses on providing application specific equipment solutions for the HVAC market and process markets that require precise environmental temperature and humidity conditions. The success of the company relies on customer satisfaction through solid product engineering application and service follow-through during and after the installation.The company serves the commercial, institutional and industrial HVAC markets. GRR Cooling focuses on providing application specific equipment solutions for the HVAC market and process markets that require precise environmental temperature and humidity conditions. The success of the company relies on customer satisfaction through solid product engineering application and service follow-through during and after the installation.The company serves the commercial, institutional and industrial HVAC markets. GRR Cooling focuses on providing application specific equipment solutions for the HVAC market and process markets that require precise environmental temperature and humidity conditions. The success of the company relies on customer satisfaction through solid product engineering application and service follow-through during and after the installation.