Browse Forums Heating, Cooling & Insulation Re: Brivis professional heater cleaning- worth it? 9Aug 10, 2012 6:48 pm catjim Both old and new heaters have a filter and I presume this is standard now. Just need to keep it vacuumed. I wish that was true but it is not, in fact most volume builders don't even have a return air duct, your heater will draw air through a wall cavity, lined very roughly with plaster, out of site out of mind. Dcuted heating sucks if it isn't installed they way it should be. |