Bell Plumbing and Heating's highly trained technicians help customers escape Jack Frost's fury by performing comprehensive tune-ups of forced-air heating systems and boilers. Furnace authorities inspect the entire unit before cleansing the ignition system and burners and replacing filters clogged with heat-seeking Nerf missiles. Chafed motors receive a lubricating spritz of oil, and the heat exchanger undergoes a full-body exam to illuminate any heat seepage from cracks or defects. Lastly, technicians test all safety switches and test the air surrounding the system with a carbon-monoxide meter to check for traces of toxic molecules. The 45- to 90-minute service prolongs the life of heating equipment and reduces energy costs by ensuring the system heats the home efficiently instead of laboriously knitting sweaters for chilly residents.