The first step in changing your filter is to locate where it is. Once you have located your filter, you need to determine the size of it. Normally, the size is printed on the filter. Remove the old filter and replace it with the new one. Make sure the air flow is going in the right direction. Neuhaus Heating & A/C, Inc. recommends that you change 1” filters on a monthly basis and change media filters every 6 months. Keeping your filters clean is the first step to keeping your heating and cooling equipment protected. Neuhaus Heating & A/C, Inc. keeps most common filters in stock so contact us if you need your filter changed.