Why You Should Always Keep Your Wood Furnace above 140 Degrees

In places where there are below average temperatures, wood furnaces and wooden heaters are a staple. And as the temperature starts to drop some more, wood furnace owners would usually burn more firewood just to ensure that temperatures are comfy and cozy indoors. But what homeowners fail to notice is that instead of making their wood furnaces more efficient, they are doing the complete opposite.

Here is a valuable piece of advice for users of an ourdoor wood furnace. Wood furnace users should always keep their units piping hot to above 140 degrees, ALL THE TIME! There are three reasons why every wood furnace user should keep in mind to ensure the efficiency and quality service of their wood furnaces.

  1. Condensation

    Do you know that any kind of wood even properly seasoned or dried wood still contains at least 25% water? And of course unseasoned wood is far worse with up to 50% water.

    Therefore when wood burns the water content will turn into steam. When it burns in your furnace, steam escapes through the chimney. But when the temperature in the furnace is below 140 degrees steam will condense inside the furnace walls and this creates a huge mess. And if water temp is above 140 degrees steam will move out of the chimney easily.

  1. Creosote

    Creosote is a mixture of smoke and water residue. Creosote looks like a sticky black tar-like substance. Creosote is harmful to your chimney just like how plaque is dangerous to the artery. When you let your furnace temperature fall 140 degrees you are letting creosote build-up and make your system inefficient. It is also a chore to clean chimney lined with creosote and over time this tar-like substance that covers the chimney will accumulate and cost more to remove. Keeping your furnace heating the water at 140 degrees is important in preventing creosote build-up.
  1. Efficiency

    Eventually your heating system will become inefficient as the opening of your chimney or tubing will get smaller and smaller.Remember that when condensation forms it leads to the development of creosote, this sticky, tar-like substance ultimately reduces heat transfer.

The heat from the fire that passes from the water in your water jacket through the steel walls is reduced simply because the steel walls are lined with creosote. Therefore you want to not only avoid steam or condensation and the development of creosote in your furnace, but you also want to ensure that the general function of your furnace is aye OK by the time the winter months hit. Remember that it is really better to be safe than to be stuck cleaning your furnace and freezing in your own home just because you cannot keep your wood furnace above 140 degrees.

Therefore, to summarize this important tip, you should always keep in mind the following:

  • Operate your furnace at temps above 140 degrees, no excuses! This should be one whole year round especially when you live in an area with a very cold climate.
  • All kinds of wood have a significant amount of water in them and therefore operating your wood furnace above 140 degrees is important to prevent moisture condensation
  • Creosote buildup is the by-product of condensation and this is not what you need in your furnace, chimney and on your pipes. Keeping your furnace at a steady temp above 140 degrees will reduce creosote buildup.
  • Creosote buildup reduces heat transfer and thus lowers your efficiency. This could only mean that you will need to use more wood than what you normally do since you do not “feel” the heat indoors. You will consume more firewood and hence a viscous cycle happens that will ultimately ruin and destroy your furnace.
  • Creosote buildup happens no matter what kind or brand of wood furnace you have remember that excessive creosote will ultimately kill your furnace and this means you can either end up purchasing a new wood furnace or using an inefficient one for the long winter months.

Nature’s Comfort furnaces are state of the art wood furnaces that are free from creosote issues as long as you follow normal operation.  Users just need to remember to burn or use only seasoned wood, and of course follow proper operations and maintenance procedures.

It is best to keep your Nature’s Comfort owner’s manual for guidelines on how to operate and how to efficiently maintain your furnace.

And since you are able to heat your home during the cold months and you will enjoy years of warmth you will eventually save big money in the long run with your Nature’s Comfort furnace. You may also visit the Nature’s Comfort website for more details about their wooden furnace line.


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