Which of the following practices is NOT recommended for conserving energy?

Using multiple heat sources simultaneously is not recommended for conserving energy because it typically results in higher overall energy consumption. This practice can lead to inefficiencies, as different heating systems may not work effectively together, resulting in wasted energy. Instead, energy conservation methods focus on minimizing energy use and maximizing efficiency.

Turning down the thermostat is an effective way to reduce heating costs, as it lowers the overall energy required to maintain a comfortable temperature. Using natural light helps to reduce the need for artificial lighting, thus conserving electricity. Finally, sealing windows and doors prevents drafts and minimizes heat loss, leading to improved energy efficiency in heating and cooling systems. Each of these practices directly contributes to reducing energy consumption, making them highly recommended for energy conservation efforts.