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Honeywell AQ25042B/U Boiler Controller$229.00
The AQ250 easily converts a single zone heating system into a room-by-room comfort control system or upgrade a basic, relay-logic zoning system to intelligent Zone of Greatest Demand control for increased energy efficiency with reduced boiler cycling. The AQ250 boiler controls can ...The AQ250 easily converts a single zone heating system into a room-by-room comfort control system or upgrade a basic, relay-logic zoning system to intelligent Zone of Greatest Demand control for increased energy efficiency with reduced boiler cycling. The AQ250 boiler controls can ensure ample supply of hot water for both space heating and priority generation of domestic hot water for bathing, dishes and laundry.