Jeremy quickly detected our AC problem. Another co...

Jeremy quickly detected our AC problem. Another company had put in an aftermarket circuit board in our furnace which prevented the fan motor from changing speeds. We couldn't cool the house. He replaced the board with a genuine Lennox replacement board and the AC cooled the house down quickly. I learned that just because you buy a bumper to bumper warranty upgrade, if you don't have an honest dealer they can substitute aftermarket parts that are prone not only to fail but may ruin other components of your furnace