In addition to professional maintenance, you may need to handle some DIY heater maintenance. Depending on your household, your filters may need to be replaced or cleaned as frequently as every few weeks. Dust and pet hair are two of the main things that can block your filter. Blocked air flow can keep your heater from working properly. It can also cause excessive wear and tear on your HVAC system, which can mean you have to replace your furnace early. So, when we come out to inspect your system, talk to us about the right schedule for replacing your filter. Then, follow those guidelines to help protect your system.