The Heating Hub - #Opentherm is an important control feature for operating boilers efficiently. Read our guide to Opentherm compatible products: https://www.theheatinghub.co.uk/opentherm-boilers-controls-compatibility-guide | Facebook
RT520RF Boiler Plus Compliant Thermostat – Cool Energy Shop
Opentherm Boilers & Controls UK Guide
Comfort.me DUO, the Opentherm thermostat for your boiler