Yes, the ecobee thermostat does work with heat pumps. The ecobee thermostat has been designed to provide an intuitive and easy-to-use interface for controlling your home's temperature. It is compatible with a variety of HVAC systems, including single stage furnaces and air conditioners and multi stage systems as well as heat pumps. With its user friendly design, you can easily program it to maintain a comfortable temperature in every room of your house throughout the day. Additionally, ecobee can integrate seamlessly with popular smart home platforms like Alexa or Google Assistant so that you can control your heating system remotely through voice commands or an app on your smartphone. Ecobee also offers advanced features such as occupancy sensors that detect when someone is present in the room and adjust settings accordingly for optimal comfort levels while conserving energy at the same time.