I have the Acme 235. I know a lot of people do not like this brand, but I have to say I have had very little issues with mine. Had the pump go out 3 months after I purchased it, called and factory brought a new one out to my house! Was having a hard time getting my door to seal this winter. Called Claire at the factory, told me to check the door to see if it had warped......it had. Said unit still under warranty and he had me a new door done in 3 days, painted and new gasket installed ready to be put on the boiler. I am on year 3 with this wood boiler. It heats my home and hot water and does a very good job in doing so. I only live 35 miles from where these are built. I have toured the factory and have seen how these are made at various stages of construction while at the plant. They stand behind their product. This unit does not have all the bells and whistles of other brands, but for the money I think it is the best available. It is worth looking into if you are considering wood heat!