I understand your concern about regular air purification system maintenance. When it comes to how often you should have your ventilation system and air ducts professionally cleaned, it is generally recommended that you have it done about every 3-5 years, depending on how much you use your system and the conditions in your home. If you notice that your ventilation system is not working as well as it used to, this could be a sign of contamination. When choosing a cleaning company, it's important to pay attention to customer reviews, check whether the company has the relevant certificates, and find out what cleaning methods they use. The question of how often should I clean air ducts from https://comfortclean.com/how-often-should-you-clean-your-ducts-why-air-duct-cleaning-is-an-important-for-a-clean-home/
is important for maintaining quality air in the home. I hope these tips will help you find the best solution for your situation!