Reverse return is easier to _________ and each pipe circuit is the same length.

• A. balance
• B. route
• C. insulate
• D. vent

Answer: (A)

Reverse return is easier to balance because it makes each pipe circuit from the shared supply to its end have essentially the same length. That equalizes pressure drop and flow resistance across all branches, so the water distributes more evenly and you can set the system to a desired flow with less adjustment. When circuits vary in length, longer runs lose more head and draw more flow, making balancing unpredictable. The other options don’t address how evenly the flows are distributed: routing is about where pipes go, insulation deals with heat loss, and venting removes air rather than balancing flow.