Today Diego and I performed preventative maintenance and heating checks on six rtus and four unit heaters. The rooftop units were checked for electrical and mechanical functions. The filters were replaced and all six units are functioning within the manufacturer’s specifications. All six of these units are new this year and they have been updated as existing equipment in our system. I was unable to remove the previous Carrier equipment from our system. The units heaters were visually checked for function and the heat exchangers were visually checked as well. Due to the placement of these units reaching all four sides was an impossibility. A 12’ ladder as listed in the notes is useless here. More effective was an extension ladder however due to shelving, gas lines and lighting there was limited access. All fans and inducer motors had their bearings visually checked. Burners were also visually checked before and during fan cycling. Unit heater #2 has a damaged and disconnecte