I have a 2003 Englander model 25-PDVC. I have had it around 5 years (bought it used at one year old) . The past cpl of years it worked fine. It now seems that it is not heating like it used to. As an example we have a thermostat (for our gas hot water heat) that is on the wall next to the stove. Past years the temps on the thermostat would read in the mid 80's. This year I am lucky to see 65 degrees on the thermostat. I did clean the stove last weekend. I have not replaced any gaskets on this unit. I also do not have an OAK but the past years that was never an issue. I get great flame but the heat does not seem to be there. Any ideas and or suggestions would be very much welcome. Thanks!