We manufacture low-cost, high-value, air-leakage control energy conservation products for the four largest intentional openings in a typical house - the fireplace, the pull-down attic stair, the whole house fan, and the clothes dryer exhaust duct.

A full service mechanical contractor Offering a full line of HVAC services, including complete piping and sheet metal full service department to provide 24 hour on call service and in house engineering for design build, or plan/specification services.

CONTRACT RESEARCH & DEVELOPMENT, ADVANCED PRODUCT DEVELOPMENT, ADVANCED MATERIALS RESEARCH

sales, service, installation of heating, air conditioning and refrigeration equipment

Design manufacturing fabrication and installation of mechanical refrigeration and HVAC equipment

Design and manufacture high performanc thermal management solutions. Products include custom plate-fin heat exchangers, flat-tube heat exchangers, vacuum brazed cold plates, liquid cooled chassis, and value added assemblies.

Control Valves, Actuators, flow transmitters, dampers, liquid refrig. sys., steam nozzles, actuator enclosures, metallic linkages

ROY MECHANICAL SERVICES

Electrical Contractors, Power Boiler and Heat Exchanger Manufacturing, Hardware Manufacturing, Bolt, Nut, Screw, Rivet, and Washer Manufacturing, Fluid Power Valve and Hose Fitting Manufacturing

Sanitary Paper Product Manufacturing, Heating Equipment (except Warm Air Furnaces) Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Semiconductor and Related Device Manufacturing

Hardware control, automation, electromechanical, sensor systems, gas dynamics, data analysis, simulations, instrumentation

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Surgical Appliance and Supplies Manufacturing

MARLBOROUGH

BOSTON AIR PRODUCTS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers, Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers, Industrial Supplies Merchant Wholesalers

Steam and Air-Conditioning Supply, Other Metal Valve and Pipe Fitting Manufacturing, Air Purification Equipment Manufacturing, Heating Equipment (except Warm Air Furnaces) Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen

Potato Farming, Other Vegetable (except Potato) and Melon Farming, All Other Miscellaneous Crop Farming, Other Animal Aquaculture, All Other Miscellaneous Textile Product Mills

Hydroelectric Power Generation, Fossil Fuel Electric Power Generation, Nuclear Electric Power Generation, Other Electric Power Generation, Electric Bulk Power Transmission and Control

Electrical Contractors, Plumbing, Heating, and Air-Conditioning Contractors, Air Purification Equipment Manufacturing, Industrial and Commercial Fan and Blower Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen