Genuinely life changing wood furnace!

Gentlemen, now that we have properly cold weather, I can tell you that the Heat Commander is absolutely genius. We are getting 12 hour burns, using all of the heat from the coal bed, and keeping the house in the low 70s without big temperature swings. Since 9 am this morning when I lit the fire, I've only opened it once to rake the coals over the ash grill. 12 hours of even heat on a bitterly cold, windy day and I only touched the furnace once . . . For people who heat with wood, this is genuinely life changing! Thank you!