Red Seal Plumbing Practice Exam

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What could be a result of oversizing a boiler?

  1. Higher efficiency

  2. Lower water temperature

  3. The boiler cycling on and off more frequently

  4. Constant operation without cycling

The correct answer is: The boiler cycling on and off more frequently

Oversizing a boiler is the process of installing a boiler with more heating capacity than necessary for the space it is intended to heat. This can lead to issues such as higher energy consumption and inconsistent heating. Option A is incorrect because oversizing a boiler does not improve efficiency. Option B is incorrect because oversizing a boiler will not necessarily result in a lower water temperature. Option D is incorrect because oversizing a boiler may cause it to run constantly, but it is more likely to cycle on and off frequently, which can be inefficient and wear down the boiler over time. Therefore, the correct answer is C.

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