• Furnace configured for natural gas

    Jan.6.2011

    I have a heating and cooling system that was installed 9/27/10. About 2 weeks ago the heating system failed (thermostat lost power) after multiple attempts to repair it. It was determined that the furnace was configured for natural gas whereas I have LP (liquid propane). I was informed that a conversion to a LP kit would fix my problems. I am concerned on multiple levels at this point. Does this sound like a reasonable scenario? Will it work?

    Frank, North Myrtle Be, SC

    Yes, this makes perfect sense. LP gas has a higher BTU (British Thermal Unit) content then natural gas. Most all gas furnaces come set up from the factory to use natural gas, and a LP conversion kit must be installed for the furnace to operate properly on LP. Most all furnaces have both an operating temperature range and a maximum operating temperature. If the furnace was not converted to LP then it was probably operating at a higher temperature than it is supposed to. This would cause the furnace’s main safety switch to turn the furnace off and could cause the thermostat to go blank. I would recommend that you talk to the installing company and request the furnace be replaced at no charge. Operating a furnace on LP that has not been converted from natural gas to LP will cause the furnace to soot up. Since I don’t know how much the furnace has been running, you could be looking at additional problems in the future. If you do not get satisfaction from the installing company, please contact your local ARS/Rescue Rooter branch at (843) 293-9999 for all your HVAC installation, repair, tune-up and replacement needs.

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