18. A space has a total exterior wall area of 1200 ft2 (111 m2) and an insulation value of R-18 (RSI 3.17). The design outdoor heating temperature is 0° F (17.8° C) and the interior temperature is 70° F (21.1° C). What is the approximate total heat required to offset the loss through the wall?
A. 2.2 MBH (0.64 kWh)
B. 3.5 MBH (1.03 kWh)
C. 4.7 MBH (1.38 kWh) Write your response with exactly 2 paragraphs, separated with the markdown divider: ***.
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