Do I need broadband? Follow Yes. You will need broadband in your property to use Wiser. Related articles What happens if I lose my internet connection? What happens if my internet connection stops working? Why is my 4G router not connecting to Wiser? Have you changed your router or internet service provider? The flame on my app/thermostat is displayed indicating the heating is on, however my boiler isn’t on. Is this normal? (WH) Comments 0 comments Please sign in to leave a comment.