Jeff came to check out my furnace today, and I do ...

Jeff came to check out my furnace today, and I do not regret spending the money to have a professional come check it out. He gave me the 30 minute heads-up I requested before he arrived. He patiently explained the work he was doing as he checked on everything, and even took a look at my humidifier, which he revealed desperately needs a new filter. He was a good dude, and I respect the patience he put into explaining things to me, and checking every important piece of my furnace.