rhouse30
Jan 17, 2009, 04:06 PM
My furnace has been running daily. I hear you should change the filter about once a month.
My filter still looks clean. Should I change the filter when it looks dirty or about once a month when you are using it regularly.
Thanks in advance.
My filter still looks clean. Should I change the filter when it looks dirty or about once a month when you are using it regularly.
Thanks in advance.