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How to Install a Wood Furnace – Tips from the Experts

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Wood furnace is ideal for saving energy bills and at the same time gets a cozy and sustainable heating system in the house. But how do you install a wood furnace? If it is your much first time, it might feel overwhelming, but don’t worry though, we have everything here covered!

This article will guide you through wood furnace installation from location selection to final setup and safety precautions. Whether you’re an experienced DIYer or just starting, this step-by-step guide will ensure proper and smooth installation.

Why Choose a Wood Furnace?

Let us first look at the good reasons why a wood furnace may be right for your home before we plunge into installing it.

  • Energy Efficient: Affordable heating using a renewable fuel source qualifies a wood furnace for energy efficiency.
  • Heat Savings: Forget the overblown energy bills. Wood’s price is often much below electricity, gas, or oil.
  • Environment Friendly: Generally, wood as fuel is carbon-neutral when sustainably sourced, making it a very good way of producing energy for the environment.
  • Independence from the Grid: Concerned about power outages? A wood furnace ensures that heat will still be available even when electricity is down.

Now that you are aware of the benefits, let us proceed to the installation!

Step-by-Step Guide to Installing a Wood Furnace

Step 1: Choose the Right Location

The location of your wood furnace is an important consideration to ensure high performance and safe operation. Here are a few things to consider: 

  • Distance from Your House: Outdoor wood furnaces need to be placed at least 30-50 feet from your house to prevent the accumulation of smoke. 
  • Wind Direction: Position the unit so prevailing wind carries smoke away from your home and out to its outdoor areas. 
  • Accessibility: Easy and uncomplicated access for loading wood and carrying out maintenance should be ensured. 
  • Foundation: Your furnace should sit on stable, fireproof surfaces like concrete to make it less vulnerable to shifting and tilting. 

Have you checked local building codes and regulations? Some areas require specific permits for wood furnace installation. Always check with your local authorities before proceeding.

Step 2: Install the Furnace Pad or Foundation

Your wood furnace requires a strong base not to shift over time. The following method would ensure proper foundation work:

  1. Mark the area of installation using stakes and string so that it may be properly placed.
  2. Excavate the ground (where needed) to level the area.
  3. Make a concrete pad on which to place the furnace (normally 4-6 inches thick) so as to give a stable surface which is fireproof in nature.
  4. Let the concrete sit for at least two days before putting the furnace upon it.

Step 3: Connect the Water Supply and Heat Exchanger

Most outdoor wood burning furnaces operate by water transfer to the home. This is how it is connected:

  1. Underground insulated piping should be installed from the furnace to the house. This pipe is hot water from the furnace to your indoor heat exchanger. You can find high-quality insulated piping here.
  2. Connect the heat exchanger to the existing HVAC system so that it can distribute heat through the house. Not sure which one to choose? Check out these heat exchangers for the best options.
  3. Make sure that your insulation works against heat loss, especially in the coldest climates. 
  4. Test for leaks and finalize the connections.

Step 4: Set Up the Chimney and Venting System

Proper venting is essential for safety and efficiency. Follow these steps:

  1. Make sure that the chimney stack is constructed at a minimum of 12 to 15 feet above the ground level. 
  2. Use insulated chimney pipes to avoid creating excessive amounts of creosote. You can find durable chimney components here.
  3. Make sure that there is a secure connection between the furnace as well as chimney, allowing for free air movement.
  4. Make it a habit to regularly check your chimney for obstructions to avoid anything affecting good ventilation. 

Did you know? One of the leading causes of chimney fires consists of the excess build-up of creosote, as discussed in this article here. So make sure that you get a thorough cleaning and maintenance done from time to time!

Step 5: Install the Circulating Pump

A circulating pump is crucial to moving heated water between the furnace and your house. Here are steps to be taken: 

  1. Choose the pump based on the size of your heating system. Explore our pump collections here for the best fit.
  2. Connect the pump to your furnace and the plumbing system. 
  3. Insulate the pump adequately to safeguard against freezing in low temperatures. 
  4. Test the pump for steady flow of water.

Step 6: Electrical and Safety Connections

Although a woodstove is primarily powered by wood, some parts will need to be connected to electricity. Here are some tasks:

  • Connect the blower fan to the home electrical system to circulate warm air.
  • Install a backup power source, such as a generator or battery back-up, during outages.
  • Safety features such as pressure relief valves and temperature controls should be tested.
  • Check all of the wiring for a secure, safe setup.

Pro Tip: Surge protectors should be available in case electrical fluctuations damage the appliances.

Step 7: Fire It Up and Test the System

Connect everything, and then the wait is over; it’s time to light your wood furnace. Now, the last few steps: 

  1. Fill up the water reservoir and check for leaks. 
  2. Load the firebox with dry, seasoned wood for maximum burning efficiency. 
  3. Start the fire and increase temperature gradually. 
  4. Check heat distribution to ensure it warms your whole house. 
  5. Make sure all safety controls work properly.

Common Installation Mistakes to Avoid

Using Green/Wet Wood – This leads to inefficient burning and excessive creosote buildup.
Skipping Insulation – Poorly insulated pipes can result in significant heat loss.
Neglecting Ventilation – Inadequate chimney height can cause backdrafts and smoke issues.
Ignoring Local Codes – Always check with authorities before installing to avoid legal problems.

Conclusion: 

Installation of a wood furnace will most probably be one of those projects you would enjoy; it can surely save you money, make your energies more efficient, and possibly heat you very well for years to come. With this expert-backed guide, it is cushy and safe installation process wise.

Proper maintenance is very important though: regular chimney cleaning, ash removal, and inspection every at least once in a year would make your furnace run at its best efficiency.

And in case any part of the installation process leaves you confused, it is better to consult someone who is a pro at it. Advice from an expert can actually make a difference for many concerns such as safety and efficiency.

Are you ready to install wood furnace already? Visit OutdoorBoiler.com for quality furnaces, installation kits, and better advice. Don’t wait—improve your heating system today!

Frequently Asked Questions

What is the biggest drawback to heating with wood?

Although they are most efficient as far as wood heating appliances are concerned, they will still be more polluting than the modern heating oil and natural gas appliances. Burning wood causes smoke, excessive smoke causing health and other problems for so many family members and their neighbours.

What is the life expectancy of a wood furnace?

As with any piece of equipment, a reasonable lifespan for a wood stove will be somewhere between 10 to 20 years, but good care and close monitoring can stretch its useful life into the upper decades.

Does a wood furnace need a chimney?

While heat may be the primary function of the fire, smoke definitely plays a supportive role wherever fire exists. In fact, every bit of smoke must go out through the chimney for safe disposal.

Can you leave a wood furnace unattended?

You may leave a fire burning into your furnace during the day. Just make sure the firebox and ash pan doors are closed and sealed tight, and that combustible-clearances around the unit are observed at all times.

How far from house does wood furnace need to be?

You should also consider placing your furnace, where you can easily refill it. If at all feasible, place outside boilers 30 to 50 feet away from buildings. For the minimum distances, check with your insurance provider.