What action should be avoided to prevent heat distribution issues?

Blocking vents with furniture can significantly hinder the effective distribution of heat throughout a space. When vents are obstructed, the airflow is restricted, leading to uneven heating and discomfort in the affected areas. This blockage can cause an increase in pressure within the duct system, ultimately placing additional strain on the heating system and potentially leading to mechanical failures or inefficiencies. To maintain proper heat distribution, it's imperative to ensure that all vents remain clear and unobstructed, allowing for optimal airflow and even heating throughout the environment.