What maintenance step is essential for the efficiency of pumps in a hydronic system?

Ensuring that the impeller and parts are free from obstructions is vital for the efficiency of pumps in a hydronic system. The impeller is responsible for moving the fluid through the system; if it is obstructed by debris or scale, the flow rate can be reduced significantly. This not only hampers the performance of the pump but can also lead to increased energy consumption as the pump works harder to achieve the necessary flow. Additionally, blockages can lead to cavitation, which can damage the pump over time. By maintaining clear impellers and components, the hydronic system operates more efficiently, providing better heating or cooling performance and prolonging the lifespan of the equipment.

Regularly checking the water level is important for ensuring that the system does not run dry or become air-bound, while monitoring air pressure can help in assessing the overall health of the system. However, these actions are secondary to the immediate mechanical efficiency provided by keeping the impeller and parts free from obstructions. Changing the water monthly is generally unnecessary and may not address underlying maintenance needs that affect pump efficiency.