By Gene and Katie Hamilton
Most heating contractors specialize in designing, installing and servicing the heating systems of specific manufacturers. They're most familiar with these particular units and have a history of working on them so a heating contractor is the person to install a furnace humidifier. You'll find heating contractors advertise in the "Heating Contractors" category of the Yellow Pages often featuring those brand names. If you can't find one there, go online and use a search engine like Bing, Yahoo or Google by typing the furnace name to find one with a dealer locator feature on their site. You may find a service tag or decal on the furnace, which means the company has serviced your system in the past - that's a good place to start. The best choice is a local heating contractor who will respond to service calls promptly.