Finally, once your new system is installed, you need to know how to properly maintain your system. Be sure you know how to clean your system and how often it needs to be cleaned. You should also find out if your HVAC contractor offers any service plans. For instance, B&L Ott offers biannual maintenance. Contact us to learn more. You can do so here: https://otthvac.com/contact/. You can also call B&L Ott at 610-927-5133. If you have any other questions or concerns, one of our knowledgeable technicians would be happy to assist you.