Is modern HVAC duct entirely necessary?

I was dropping off my sons at the morningcare when I met my friend Raj in the parking lot, since he does not have any children, I was curious why he was at the morningcare, however he told myself and others that he was there to take care of duct cleaning and control equipment replacement the morningcare had requested when they called the local business.

He was at the morningcare much earlier before the parents started arriving. He had, however, stayed a bit longer since the administration wanted to assume ways to improve air quality because there was an increase in the number of children at the morningcare. He gave them several air quality systems best suited for such establishments, but i was also looking into extra heat and A/C products, and from the options, I had narrowed down to, he requested myself and others to settle for the heat pump. I was afraid they would have to sit modern HVAC duct, but Raj assured myself and others that it was not always the case. If the HVAC ducts are in good condition, they do duct sealing to insulate them; After his constructive insight, I set off to buy a modern air filter to keep the air cleaner in good condition because it would be multiple weeks until the modern replacement. I had thought of purchasing a washable filter but then thought of buying it when the modern system would be up and running. I had also ordered an air cleaner, but I was slowly wondering if it was the right thing to do. I was saving every penny for the modern replacement, and spending currency on something not mandatory felt enjoy overspending. I instantly went online and canceled the purchase.
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