Installed 80% furnace added a box under furnace to bring it to height of coil. Ran new flu pipe to furnace from the T connected to water heater. Set gas pressure low to 1.85 and high to 3.4. Installed air scrubber. Customer will be calling in to office to make payment. Added return grill 12x12 in ceiling by the hall because it would not work where the original plan was supposed to put it.