Hi Rienez,
When setting up a Nest thermostat for use with a hybrid heat pump system that includes a gas combi-boiler, you'll need to configure it correctly to ensure optimal performance and efficiency. If you have a hybrid heat pump system, you will need to have a trained professional or local HVAC professional to set up your thermostat. It’s important for a professional to assess the requirements for your specific hybrid heat pump configuration since choosing incorrect options for a dual fuel system can result in damage to your system. Learn more here in the Nest thermostat compatibility article.
Let us know if that helps.
Best,
Zoe
