What is the replacement for the UH3 Wiring Centre? November 28, 2018 05:14 Updated Follow The replacement for the Heatmiser UH3 is the UH8 available here. https://www.heatmisershop.co.uk/heatmiser-uh8-8-zone-230v-wiring-centre/ Related articles What is the replacement for the UH1 Wiring Centre? How many actuators can I connect to a zone? My wiring centre only communicates to the last thermostat I paired? What cables do I need to connect my thermostats? I have a UH4/UH8 and I have more than 4 actuators on one zone, what can I do?