I once bought an air conditioner from a store like this, second-hand, which would smell bad if I turned it on. I was disappointed that I spent money in vain because it was unbearable to be in a room with such a smell. That's why I decided to look for a solution, and that's when I came across them. https://www.airconservicing.org/why-choose-us/ And even though it was already late in the evening, they answered my online message, and the next day, early in the morning, they were already at my door. They told me that the problem was that it had not been cleaned for a long time and needed a little refreshment after it was like new.