Change your air filterDepending on the filter you have in your system, you should change your filter every 6-8 weeks. Media filters can be changed every 6-9 months. Change your water panelThe water panel on your humidifier should be changed seasonally. How frequent do I need to change the bulbs in my UV light?It is recommended to change the bulbs every 2 years. Even though the bulbs are not burnt out, the bulbs should be replaced. We’re happy to answer any questions you may have. Call us today at (586) 480-5060 or (248) 987-4244 or contact us online to find the best solution for your home.