Robinair Filter Serial Number !!top!! -

Ensure the physical arrow on the filter matches the refrigerant flow direction of your machine before tightening the connections.

Do not waste time trying to read a worn-out filter. Go to the back of your machine, write down the Model Number and Unit Serial Number , and cross-reference those with a reputable HVAC parts supplier. This guarantees the new filter has the correct thread pitch and flow rate for your specific unit. robinair filter serial number