Outdoor air quality

After a bad experience, I also doubted whether it was worth repeating the cleaning at all until I began to dig deeper. An article about outdoor air quality helped me. It clearly explains how dirty ventilation affects not only your equipment but also your well-being. I realized the previous service had been superficial, as I still had dust and heavy air. After a proper cleaning, breathing became easier, especially during the season of poor outdoor air. For me, this became the main indicator of quality, not the visual result. Now I understand that repeat cleanings by qualified professionals really do make sense.