Armstrong Air has vast experience with hvac installations for both residential and commercial type buildings . Including , but not limited to , 4-6 storey apartment buildings , Townhomes , hi-rise buildings , office / retail buildings , car dealership and warehouse buildings . Our services include the supply and installation of , Make Up Air Units , Parkade Equipment / Ductwork , Heat Recovery Units , A/C Packaged Roof Top Units , Ducted Split Fancoil - Condensing Units , Ductless Splits , VRF Systems , Refrigeration Piping / Control Wiring , Bath Fan , Kitchen Range , HRV/ERV , Dryer , Ductwork and Custom Ductwork .