If the employer were to reimburse at the full IRS rate, he would be giving the employee $2,700 (based on the 2016 rate of 54 cents per mile). This is quite a bit more than the employee needs to be reimbursed â unless the employer just wants to help with the car payment.
Duct Sealing. In houses with forced-air heating and cooling systems, ducts are used to distribute conditioned air throughout the house. In a typical house, however, about 20 to 30 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts.n houses with forced-air heating and cooling systems, ducts are used to distribute conditioned air throughout the house. In a typical house, however, about 20 to 30 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts.
Return Plenum. Forced-air systems also have return ducts that connect to the HVAC equipment through an air-collection box known as a return plenum. As freshly conditioned air is blown out of the room supply ducts, âusedâ air from the rooms is sucked into the return ducts.he ductwork that distributes the heated or cooled air to individual rooms of the house connects to the plenum. The HVAC equipment has a blower that forces heated or cooled air into the supply plenum and from the plenum into the rooms through the supply duct system.