Yesterday my furnace was cleaned. Now the taco cartridge circulator, model 007-F5-8IFC, is making a noise that it wasn't making before it was cleaned. The sounds include humming, buzzing, clicking. It's also so hot I burnt my hand when I touched it. The taco was replaced this spring. It has never made a noise after it was cleaned. I'll be calling the hvac guy, but wanted some insight before I spoke to him.