We have a goodman gas furnace and the blower will not turn off when the temperature reaches setting. Air conditiong unit will turn on and off properly but the fan on furnace stays on constantly. Any way to remedy this?

Check your thermostat and make sure the fan control is set to automatic or auto.

Had similar condition with a Goodman gas furnace. Search for the thread called "blower on furnace is possessed".

Hope it helps you fix your problem.