We have a large selection of furnace parts manuals / wire diagrams online. To help you look up your part number by model number. Click on Furnace Parts Manuals then use Control andF to search your model number. ctrl+F
Coleman 3400 Wire Diagram / Parts manual/ Helpful user guide (Download) ClickHERE
Parts list for the 3400-818 Coleman electric furnaces. 16.1KW or 55,000 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.