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Zone Valves versus Zone Pumps
Still waffling between zone valves (5 zones) and zone pumps (5 zones as well). For the zone valves I would use a variable speed ECM pump. This project is on a tight budget. It would appear on the surface that the upfront costs for the zone valve configuration would be a few hundred dollar differential. Is there a significant electrical savings for this type of control? What percentage savings might one expect?
Are there quality zone valves that are less expensive?