Nagelbush Mechanical, Inc. is recognized as one of the largest specialty contractors in Florida providing comprehensive plumb ... ing, HVAC and electrical services. With over forty years of successful construction, Nagelbush has an accomplished record of completing large multi story hotels, residential, civic and corporate projects. A GreenStar Company - GreenStar Services Corporation is a national leader in plumbing, HVAC and electrical construction and general specialty contracting. GreenStar specializes in infrastructure and complex commercial installations. read more