Outdoor Wood Boiler Efficiency

Premium outdoor wood boilers offer a number of benefits over their traditional counterparts. Not only do they provide homeowners with an alternative to fossil fuels, but they are also highly efficient, clean burning, and cost effective. While there are many different types of outdoor wood boilers on the market, not all of them are created equal. In this blog post, we will explore the most efficient outdoor wood boilers available and how they can benefit your home.

What is an outdoor wood boiler?

An outdoor wood boiler (OWB) is a type of furnace that burns wood to generate heat for central heating, water heating, or both. OWBs typically have a firebox where the wood is burned and a heat exchange where the generated heat is transferred to the desired medium (water, air, etc.). OWBs are usually located outside of the house, often near the woodpile.

There are several benefits to using an OWB. One is that they are very efficient at generating heat; in fact, they are often more than twice as efficient as traditional indoor wood stoves. Another benefit is that they can be used to supplement or even replace other forms of heating, such as propane or oil furnaces. OWBs produce very little smoke and emissions, making them much better for the environment than traditional wood stoves.

The benefits of using an outdoor wood boiler

Outdoor wood boilers, also known as outdoor wood fired furnaces or outdoor wood stoves, are a type of furnace that burns wood to generate heat for your home. While traditional furnaces and wood stoves burn wood indoors, outdoor wood boilers are designed to be placed outside your home, typically near the back or side of the house.

There are several benefits to using an outdoor wood boiler:

  • Increased Efficiency: Outdoor wood boilers are typically more efficient than traditional indoor furnaces and stoves. This is because the heat generated by the boiler is used to heat your home, rather than being lost up the chimney. The fire in an outdoor wood boiler is continually fed by fresh oxygen, which helps it to burn more efficiently.
  • Lower Cost: Because they are more efficient, outdoor wood boilers can save you money on your heating bills. In fact, many people who switch to an outdoor wood boiler find that their heating costs are cut in half.
  • Environmentally Friendly: Outdoor wood boilers are a great way to heat your home without damaging the environment. Unlike fossil fuels like natural gas and oil, burning wood does not release harmful greenhouse gases into the atmosphere. Many models of outdoor wood boiler are designed to burn wood very efficiently, resulting in less pollution and smoke.

How to choose the right outdoor wood boiler

When you are looking for an outdoor wood boiler, there are a few factors that you will want to take into consideration in order to find the most efficient model for your needs. The size of the unit is one of the main considerations. You will want to choose a model that is large enough to heat the water you need, but not so large that it is wasting fuel.

The type of fuel you use is another factor to consider when choosing an outdoor wood boiler. Some models are designed to burn only wood, while others can burn both wood and coal. If you have access to both types of fuel, it may be more efficient to choose a model that can burn both, as this will give you more options when it comes time to refuel.

The efficiency of the unit is also an important consideration. More efficient units will cost more up front, but they will save you money in the long run by using less fuel. When comparing models, be sure to look at the overall efficiency rating, as well as any specific ratings for the type of fuel you plan to use.

Take into account the installation costs when choosing an outdoor wood boiler. Some models require special venting or other considerations that can add to the overall cost of installation. Be sure to get estimates from several different installers before making your final decision.

How to use your outdoor wood boiler efficiently

If you have an outdoor wood boiler, there are a few things you can do to ensure it operates as efficiently as possible. Here are some tips:

  • Make sure the firebox is properly insulated. This will help retain heat and minimize heat loss.
  • Use dry, seasoned wood. Wet wood will cause the fire to smoke and will be less efficient.
  • Don’t over fire the boiler. This can damage the unit and waste fuel.
  • Maintain proper water levels in the boiler. Too much or too little water can both lead to inefficiency.
  • Have your boiler serviced regularly to ensure it is operating at peak efficiency.


If you are considering an outdoor wood boiler, hopefully this article has helped you to understand a little more about their efficiency. While they may not be the most efficient option available, they can still be a great way to heat your home while using renewable resources. With a little bit of research and planning, you can find an outdoor wood boiler that will meet your needs and help you save money on your heating costs.


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