Stewart's Shops - 31 New Karner Rd [Refrigeration Technician / AC Technician] As a Maintenance Worker at Stewart's Shops, you'll: Perform general maintenance in the shops; Be able to do some heavy lifting; Be a self-starter and work with little to no supervision; Diagnose and repair refrigeration and HVAC units; Perform basic carpentry, plumbing, and electric work...Hiring Immediately >>