Heating maintenance in Cumming. Upstairs furnace components all tested within normal manufacturing spec but the furnace is over firing with an alarming amount of carbon monoxide level. System needs to be calibrated for safety concerns and for proper life of the system. System also has no drain line water safety to help prevent flooding in the case of common drain line clogs. Basement system heating as designed but needs a compressor saver hard start kit to reduce stress on compressor and reduce energy consumption on start up which will extend the life of the system especially when starting during the cold winter season.