The training seminar for intermediaries and investors was organized online using the ZOOM platform on 17.12.2021 starting at 11:00 CET with a duration of an hour and a half. As a follow up on the first training where many renewable heating and cooling systems options and the importance of their promotion were shared with the participants, the second training was more focused on the tools that the intermediaries and investors could use to encourage end-users to replace their inefficient heating systems. Therefore, the REPLACE Your Heating System Calculator was presented, as it is beneficial for the investors and intermediaries to depict the energy and financial savings and societal impacts from the H&C replacements. Around 15 attendees made the discussion fruitful and contributed with valuable comments. Moreover they will further promote it on the website and build the capacities of the end users.