In what significant way are the cases similar and in what significant way are they different?

Good Faith Performance and Discharge Good Faith Performance and Discharge
Although the ultimate goal of the parties in a contract is to discharge the obligations of the
parties by performing as promised, a contract may also be discharged through substantial
performance, mutual consent of the parties, or through operation of law. The law also
imposes an affirmative duty of fair dealing and good faith in performing obligations, and this
underlies all contract transactions.
Read the case below and answer the questions that follow. Read the case below and answer the questions that follow.
Cold Case Storage (CCS) provides refrigerated storage facilities for food purveyors. CCS
contracts with Igloo Builders Inc. (Igloo) to build five refrigerated warehouses. The contract
called for type “A1A” brand insulation so that the warehouse would stay between 35 and 40
degrees with minimal energy. Igloo built the first four warehouses using the A1A insulation,
but then ran short of supply. Igloo’s construction manager did not want to miss the completion
deadline because her bonus depended on timely completion. Therefore, she ordered her
workers to substitute B1B insulation for the A1A insulation in the last warehouse. Upon
inspection, CCS refused to pay for the final warehouse, citing expert evidence that, because
the B1B insulation was not as efficient, the extra costs would total $1,000 (more during peak
hot months) per month in cooling costs.
Compare and contrast the CCS v. Igloo dispute with Jacob and Youngs v. Kent (Reading
Pipe) case. In what significant way are the cases similar and in what significant way are
they different?