Stone Rentals LLC

Founded in 1989, Mechanical Comfort Inc. specializes in heating, ventilation and air conditioning (HVAC) construction and plumbing services. It has certification to maintain scientific equipment, including centrifuges, growth chambers, cold chambers, hot chambers and many more. Located in Ames, Iowa, it offers a range of services, such as electrical, sheet metal, plumbing and more. The company s mechanical services include installing ventilating and cooling equipment work. Mechanical Comfort Inc. provides an array of products, such as Conviron, Labconco, Percival, Hotpack and Kolpak.

Founded in 1932, Proctor Mechanical is a mechanical contractor specializing in underground utilities, plumbing, pipefitting, welding, air conditioning, sheetmetal and temperature controls. The company offers a variety of building design, mechanical engineering, drafting services, part design and fabrication for offices, medical clinics, warehouses and factories. Its services division provides various commercial and residential services, such as emergency service, backflow installation and testing, heating, cooling and refrigeration, installation and repair, stop boxes, and water and sewer line replacement. The company provides heating, ventilation and air conditioning services for various systems, such as commercial roof top units, new residential installations, boiler and mechanical piping, carbon monoxide testing, sheet metal installs, air balancing, and refrigeration, gas heating, ventilation systems. Proctor Mechanical is located in Des Moines, Iowa.