Outdoor Wood Furnace Lil'House Outside Wood Heater. Save money with efficient wood heat.

Heater operation

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Things to help you understand the operation of the heater.

Category: *Heater operation


  1. How often do I have to take out the ashes?
    That depends on several things. How hard you are burning the unit. What type of wood you are burning. Your personal preference. I take ashes out each day just about. The furnace burns front to back so in the evening I will have dead ashes in the front. Take out a couple of scoops and pull the coals back up to the front and away I go for another round. I use an old worn out pointed shovel to scoop the ashes out into metal buckets with lids. Remember a coal can last in ashes for several days.... don't scatter the ashes on the garden and set the yard on fire!
  2. How long will a load of wood burn in the furnace?
    Again that depends on several factors: How cold it is outside, what type of wood your burning and how big your house is! Another factor is how full you fill the furnace with wood. Usually I get 12 to 15 hours out of a load of wood. But that is me, when it is real cold and super windy I have got just 8 hours out of a load. (but the gas furnace would have never shut down either). Remember that round wood burns longer than split wood. Dry wood is what you want to burn too! VERY IMPORTANT

  3. How often will I have to change the draft on the door?
    That depends........if your burning the same type of wood and the temperature is not flunctuating alot you will not move it much. I don't move mine much at all, the only time is when it gets really cold and I just need alot more heat.
  4. How do you get such a long burn time out of a load of wood?
    The wood lays in the ashes and not on a grate. That is one reason the coals stay around longer. By just having a small amount of air coming into the stove you are actually trying to charcoal the wood that gives it a longer burn time. Once you get your home warm it doesn't take alot of heat to keep it warm. You just have to pull the cold air off the floor run it thru the furnace reheat it and return it to your house........that doesn't take alot of heat. So you are not burning the wood in a big flame.
  5. How do you load your furnace for overnight operation?
    I usually go out around 7 or 8 pm and load it half full if it is really cold. Then around bedtime I will go back and finish filling it for overnight. Most of the time I don't move the draft at all.
  6. How do you regulate the heat in your home?
    By how much wood you put in the furnace (if it is going to be 60 at noon next day you don't need a full load since you will have coals heating at noon!). How much air or draft you give the furnace to control the rate of burn. The furnace has a temperature switch in the heat duct that kicks the blower on when it is 120 or above in the heat duct. So your blower will run as long as you have heat in the stove, remember that coals are where the heat is and they last a long time laying in the ashes. You will have times when a 3 stick fire is all you will need overnight.
  7. Do I need to put firebrick in the furnace to insulate the bottom ?
    No you just need to leave approx. 2 inches of ashes in the bottom when you clean the furnace out. If you put firebrick in the bottom it just draws moisture and will rust out quickly because water and ashes make lye.

  8. Can I burn wet or green wood in the furnace?
    No No No...........again NO..........If you want to have creosote running down the chimney onto the top of the furnace, blowing over on the house and having to take down the chimney to clean out the creosote when it stops up go ahead and burn wet or green wood. You also will notice that you just don't have the heat output that you will have with dry seasoned wood. Always keep your wood covered before you burn it.........as wet wood holds water that acts similar to being green wood. Again ..... keep your wood DRY! For best operation!

  9. What do I need to do in the spring to keep my Lil House in good shape?
    First take down the chimney pipe and seal the top of the stove with a bucket or something. That means seal the bucket to the top of the stove with silicon to keep water from running under the bucket and on down on the outside of the firebox. Then clean out all the ashes and coat the drum with used motor oil to keep it oily. Also be sure and clean all the ashes off the ledge in front of the door itself so it doesn't rust. I usually repaint the door frame with high heat black paint. Also clean off any creosote on top of the stove as it is corrosive. I have on my own repainted after a few years around the chimney area also.
  10. Ok, I still don't understand how one little heat duct can heat my house?
    Ok think of it this way..... if where your thinking of putting your Lil'House Heater you put a box fan in a window. Which windows would you open to make a breeze thru the whole house. I will give you a hint ( the windows farthest away from the fan so it had to pull the air across the rooms). Not every room will have a return vent in it. Go back to the website and look at my floorplan. Still lost? Well give me a call or email me!
  11. How big of wood can I burn?
    Well that depends on how husky your wife is! Not really, the door is a 12x12 inches so it is big enough for a good size diameter stick. You can put a 32 inch length in the firebox but I would not recommend it, I cut mine around 26-29 inches long. I try to keep all the nice round telephone pole size sticks for real cold weather since they last a long time. Remember it is the mans job to install, wifes job to fire! ( I will get comments on this one!) LOL
  12. What kind of wood do you burn in your furnace there on the farm?
    I burn alot of oak (white and red) hickory, blackjack, dead elem, 50# feed sacks, left over cutoffs from house building (2x4 and 2x6 or 2x8 pine) . I even burn the 50# paper feed sacks during the winter. You can roll them up on early fall morning when you need a quick heat the house and go out fire, they work great. I try to save all my best pieces for when it is really cold as it has the most btu's I KEEP ALL MY WOOD COVERED ALL THE TIME TO KEEP IT DRY!
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