VIDEO BELOW

There’s more than one way to skin a cat. In fact, ask ten people and you will get eleven answers.

The simple explanation.

Zoning with pumps gives you one pump per zone. Bet you knew that already, didn’t you?!

Pros to zoning with pumps: Redundancy and the precise control of flow.

Cons to zoning with pumps: The electrical cost, the fact that there are more moving wheels on the bus to break, and it is larger near boiler piping to prevent NPSH.

Zoning with zone valves leaves you with a central pump and zone valves (or motorized valves) that open and close when each zone calls for heat.

Pros of zoning with valves: Less electrical draw, smaller near boiler piping, easy replacement when zone valves break, and it will easily bypass a non working zone valve.

Cons of zoning with valves: It is not as redundant (one system pump), the flow is not as precise, and the replacement of full valve requires a draining system.