We are going to add a new window to a rooms. The window will be a $7$ foot $x6$ foot window with a $U$ value of $1\mathrm{.}1.$ The indoor temperature is $70$ F and the outdoor design minimum temperature from the building code is $28$ F $.$ Calculate the additional heat $($ BTU$\frac{s}{H}r)$ required to make up for the lower insulation value of the window compared to the part of the wall it replaces. For this simple calculation we will ignore the heat loss from the piece of wall that is replaced.