My house is only comfortable when I run my stove on 9. It's not the stove. The stove is working beautifully!! It's an old house with poor insulation and 12' ceilings. Will it harm the stove to run it on 9 all the time?? I occasionally turn it down to 8 because I fear I may be harming it in the long run? Once I learned EVERY place to clean it, and learned how to do maintenance and minor repairs like changing out the combustion blower, etc. Add a quality pellet like Turmans and this stove is purring! Thanks again to this site and the great folks at Englander!