Heating, Air Conditioning, Fridge, HVAC/1950 Coleman Forced Air Furnace


I have a 1950 Coleman Forced Air Furnace, model number 2644B, series 859, 140K BTU.  The blower will not shut off, the furnace comes on and goes off but the blower keeps going.  I believe it is the relay but I can not find replacement parts anywhere.  Can you help me?

I am guessing something from the 1950s and not a model number?  I can not look up parts for something that old.  What is keeping the fan on will have to be determined.  Once that happens then whatever it needs will have to be adapted to what is being sold today.  I am just not going to be able to do that sitting here with no access to the unit.


Heating, Air Conditioning, Fridge, HVAC

All Answers

Answers by Expert:

Ask Experts


Craig HVAC Expert


I have been in the HVAC field for the past 18 years. I can help with most HVAC questions. I work on commerical buildings for the most part, and have yet to find anything I could not troubleshoot and repair, when repairable. I work on small 1 ton units to a 2500 ton chiller. Troubleshoot air flow, elect, and control problems. I attend regular classes to keep up with the latest and greatest.


I work on commerical sites, hospitals, gov't buildings. I can troubleshoot just about anything in the HVAC business.

5 years trade school, VFD training classes, Liebert factory training, some York and Trane factory training.

©2017 About.com. All rights reserved.