In the dark of the night, about four in the morning, a little hand shook me awake. “Dad, it smells like a fire.” My eyes shot open and my nostrils flared. But I didn’t hear the smoke alarm. I let the girl into our bed, she snuggled down, and I, err, wandered off to shake the morning dew off my water lily. And then I smelled it too- smelled like .. the electric heater in the bathroom had come on and was burning all the dust off of it. But, no, it wasn’t coming from there. So, I groggily wandered downstairs, where I could hear the furnace running. Well, I could hear the burners fired up, but there was no blowing. I rested my hand on the dusty / hairy exhaust pipe coming from the top of the furnace– it was seriously hot. Something was wrong; it wasn’t kicking over and pushing out the heat.
I did what any normal half awake geek would do, I took out a can of compressed air and blew the dust off the exhaust pipe and out of the furnace. Then I turned it on. . . nothing. So I turned it off again, and turned off the gas, thinking that I had somehow blown out the pilot light. We had a pilot light in Anchorage, and sometimes it went out, but I wasn’t awake enough to figure out where to stick the match. Besides, I thought we had an electric igniter. I went back to bed.
When the repairman showed up, he found that the igniter sensor thing had burned out. Yay, that’s the $120 part. Did I tell you that it was Saturday, and the repairman wanted an extra $20 for coming out? Yeah, well the other place wanted $300 for the call. I was ‘happy’ with the $94 guy. He got it going, fire shot up, the burners came on, and it sounded like we were ready for takeoff. Except the blower part, the fan, never came on. He reached behind and tried to turn it; it was frozen up, which probably lead to the igniter thing being burnt out. When he took out the blower motor, I could see a place to stick a furnace filter. We had never used one, and the furnace was only about five or six years old.
When he pulled apart the blower, he laughed. In twenty years, this was the hairiest motor he’d ever seen. He pulled off two felted rings of dog and cat hair, and the dirt they collected. Seriously, they were an inch thick (about a half inch, if I squeezed it) … of pet hair. Did I tell you that the most expensive part of the furnace is probably the blower motor?
Lesson; use a filter. They’re less than ten bucks a month, you’ll breathe easier, and they’ll save you an expensive trip from the furnace guy.