We found this garage furnace with the vent turned downwards. All vents, vent connectors, and flies should flow upwards. Heat rises and there should not be anything that will restrict the flow of the dangerous gasses that need to be discharged to the exterior. This was an HAVC company that installed this furnace. Most HVAC companies are professional and their workers are just as professional. But law-of-average says that there will be bad contractors in every field. This was a bad install and the repair is easily over $1,000.00.