We have the Heat Hero solid fuel heating system installed with our boiler stove,  and our house is lovely and warm we have reduced our heating bills, it is really efficient, they are a pleasure to work with.  Any questions just ask them.   I trusted  Heat Hero and the company and I have never looked back.   I swear by it and I have been in a lot of houses with a lot of systems and this is the best one I have seen.  Everyone that comes into our house remarks on how warm it is when they here and how little we spend on heat they are impressed just like we are.