Mechanical engineering students Vince Bugni, left, and Sean Paddy place a piece of insulation on top of a tiny model house while working on their senior project “Sustainable Tiny Home Systems” in the courtyard of the Mustang ’60 Machine Shop. Though they are not part of the Heating, Ventilating and Air Conditioning (HVAC) concentration, Paddy said the project is “HVAC-related” because it deals with regulating air temperature in a small house with the use of a small pond of water in the attic.