3400-820 Coleman Electric Furnace Parts
Coleman 3400 Wire Diagram / Parts manual/ Helpful user guide (Download) Click HERE
Parts list for the 3400-820 Coleman electric furnaces. 18.5KW or 63,000 BTU.
Unlike many newer Coleman furnaces, the Coleman 3400 series was not built to be air-conditioner ready. To make the furnace A/C ready, an A/C control box and upgraded blower assembly were usually added. If this furnace was paired with an air conditioner of a different brand, the A/C control box and blower assembly may be of that brand. For example, adding a Nordyne air condition was common practice.