Egg on My Face

No, no not egg on my face, dirt on my furnace filter. For several days I've been noticing that my new furnace (1 year old) has been going "ka THUMP!" each time it kicks on or off. This is very distressing considering what we paid for it. So I called the company that installed it. This morning a very nice service person came to check it out. He pulled out the filter and said "this is your problem" "OH, I feel so embarrassed!" He said that the static from the dust in the filter was causing a charge to pop in the big pipe thing that leaves the furnace. He was right because I popped in another filter and the problem was solved. I used to change the filter every month, but than I started forgetting. He suggested that when his gas and electric bill comes that is his reminder to change his filter. Ouch! Well, he had an easy start to his day.