I am looking to replace my current hot air heating system consisting of a Williamson oil furnace and a Kerr Scotsman add on connected in series with a single wood/oil combination furnace. I'd appreciate any suggestions as to what I might look at. In particular, it appears that the Napoleon HMF 200, the PSG Max Caddy, and the Charmaster might meet my needs. I'd appreciate any reviews on the above mentioned furnaces as well as any suggestions as to other models that might be suitable. Thanks!