My colleagues and I were assigned to labor at a nearby mall! Our in-store promotion was to take a single week, however it was cut short because a colleague collapsed due to the exhausting install previously done there. The floor manager was summoned to explain the status of the Heating plus Air Conditioning systems, however the report was not immediately available! His observation was, but, that the new Heating plus Air Conditioning systems recently installed were not satisfactoryly diagnosed for efficiency. That day, the trader the people I was with and I were promoting his products in-store stopped labor immediately and ordered for an impromptu repair to be done. The manager had to contact the Heating plus Air Conditioning repairman who made the upgrades to do the necessary repairs… Further investigations revealed that they installed a residential Heating plus Air Conditioning with low capacity instead of the recommended commercial version. He did not also lay the Heating plus Air Conditioning duct appropriately, so the company was genuinely looking at extravagant air duct cleaning in the future, and clearly, the Heating plus Air Conditioning provider had a lot to answer, however first, the priority was to sort the whole-house air purifier so that official labor could resume soonest possible since there was hardly correct ventilation in the mall shops, despite installing residential appliances at first, the heating and cooling unit replaced functioned just fantastic after performing the necessary tests. Once everything was back in the place, everyone was glad to have reliable central heating doing its work. It brought fantastic change and a odd mood. If they had more rooms to labor with, I am sure the zone control would have served them well. Although the mall allowed every trader to install their favorite AC products, they chipped in to assist with energy saving help.