What is the purpose of sealing holes where wires pass to the appliances?

The purpose of sealing holes where wires pass to the appliances is primarily to prevent drafts from affecting the thermostat. By sealing these openings, you help to maintain a consistent indoor temperature, as drafts can lead to fluctuations that may cause the thermostat to signal the heating or cooling system to operate incorrectly. This not only ensures better comfort in the space but also promotes more efficient energy use, as the heating or cooling system won’t have to work harder to compensate for lost conditioned air.

While other options may have certain practical implications, they do not directly address the primary concern related to sealing these holes. For example, reducing installation costs or increasing insulation effectiveness may not be the main focus when sealing wire passages, and limiting access for children is not relevant in this context since sealing holes is more about maintaining indoor climate control.