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.
However, if a system has an electric furnace for heat instead of a heat pump, the energy costs can be substantially higher, even prohibitive because electric furnaces are similar to heating with electric baseboard heaters except they are forced air as opposed to unitary heaters.eat pumps are much more cost effective than electric furnaces, which are like heating the house with a hair dryer! Use caution before listing a home as a heat pump if this is in doubt. There are several ways to distinguish a heat pump from an electric furnace.