A term used to describe a valve seat where the valve seat and valve stem share a common center. In this design, the valve can seal against the seat no matter how it is rotated. cylinder head. The part of the engine that is bolted to the engine block and caps off the top of the combustion chamber.
Heat Pump â The heat pump is built into the AC and works great if you use it correctly. From my experience and mistakes Iâve learned a lot about this little heat pump: 1. The Heat Pump does not work when temperatures are below 45 degrees. 2. Do not attempt to run the heat pump when plugged into a 20a outlet, use the heat pump when youâre plugged into a 30a or 50a plug. 3.
Heat pumps need auxiliary heat (electric heat or gas furnace) to help them when it is very cold (below 42 degrees in the North Georgia Mountains) or when the thermostat is moved more than 2 - 3 degrees at a time.