I know I asked this previously, and I wrote down all the recommendations. Now, of course, I can't find them (except for Nowak). We need a wall heater replaced. Suggestions for a reliable, honest, reasonable company to replace a wall heate?. We had a carbon monoxide emergency with it and PG&E came and disconnected it. We were told that when we get a new heater, the vent must be cleaned out--it is probably clogged and that is the reason for the build up of carbon monoxide. Thank goodness for the detector!