SIGMA Mechanical Services

General InfoSIGMA Mechanical is a full service air conditioning, heating, and refrigeration company serving Marshfield and the surrounding area. Our technicians use state of the art technology to repair existing systems. We offer 24-hour seven days a week emergency service.,SIGMA Mechanical is a full service air conditioning, heating, and refrigeration company serving Marshfield and the surrounding area. Our technicians use state of the art technology to repair existing systems. We offer 24-hour seven days a week emergency service.