Where should diffusers generally be placed in areas that need to be heated?

Where should diffusers generally be placed in areas that need to be heated?

• A. On the floor
• B. High in the wall
• C. In the ceiling grid
• D. Near doors

Answer: (A)

For heating, delivering warm air from the floor is most effective. Warm air rises, so placing a diffuser on the floor allows the air to start near the occupants and then gently rise, mixing with cooler room air to create an even, comfortable temperature. This minimizes a hot layer at the ceiling and reduces drafts at eye level. If you put diffusers high on a wall or in the ceiling, the warm air tends to stay near the top, which can waste energy and leave the occupied space cooler. Diffusers near doors can also cause unwanted drafts and heat loss when doors open.

For heating, delivering warm air from the floor is most effective. Warm air rises, so placing a diffuser on the floor allows the air to start near the occupants and then gently rise, mixing with cooler room air to create an even, comfortable temperature. This minimizes a hot layer at the ceiling and reduces drafts at eye level. If you put diffusers high on a wall or in the ceiling, the warm air tends to stay near the top, which can waste energy and leave the occupied space cooler. Diffusers near doors can also cause unwanted drafts and heat loss when doors open.