Determine the estimated cost for the heating system for the residence shown in Figure 20.5. A subcontractor has given you a cost of $1,900 for the heating unit and a cost of $195 per register, which includes the ductwork from the heating unit to the register. A register is required in each of the rooms. Rooms over 150 square feet require one register per 150 square feet or fraction thereof.
What will be an ideal response?
The cost is calculated as follows:
Area (Bathroom) = 8?9? × 5?9? = 51 sf – Use one register
Area (Bedroom 1) = 11?6? × 12?10? = 148 sf – Use one register
Area (Bedroom 2) = 11?6? × 12?10? = 148 sf – Use one register
Area (Bedroom 3) = 11?9? × 16?4? = 192 sf – Use two registers
Area (Great Room) = 19?4? × 12?3? + 6? × 8?9? = 289 sf – Use two registers
Cost = $1,900 + 7 resisters × $195/register = $3,265
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