I work in an office building that also houses a candle-making shop plus other small factories, therefore more than anything, we need systems that function optimally every time. Because of the multiple little factories, the office gets hot and stuffy and it worsens during summer. There are numerous HVAC brands and among the heat and AC products we have in the office building include a ductless HVAC and a heat pump. The vent-free system has done a lot to save on space as we do not have to create space for vents. There are some offices that have units with vents and they always ensure to have the air duct cleaning done at least once a year. Recently because of the pandemic, there was a proposal to the building owner to add on the air quality systems for whole home air purification. A HVAC supplier delivered the unit and the cooling workman did the installation. This unit greatly improved the condition at the office and reduced the respiratory issues of some of the employees. The air conditioning expert advised us to ensure we schedule the a/c workman to do air conditioning maintenance on the units. He also added that a local contractor would be ideal to reposition the unit since it should be placed in an airy space. Fortunately, we have a resident a/c representative to help whenever the system malfunctions so that we do not have to worry about trying to get a technician even during peak seasons. We were all glad to have the new system set up at the office as it helped clean the air while also keeping us cool during the summer heat.