Can I Replace My Old Wood Burner With Any New Wood Burner?
If your existing wood burner has reached the end of its service life, you might assume you can simply remove it and install any new wood burner in its place.
Unfortunately, it isn't always that simple.
Every wood burner has its own installation requirements. A model that looks similar to your existing fire may require different clearances, a larger hearth or a different installation configuration.
At Dr Flue, we assess the existing installation before recommending a replacement so that the new wood burner suits both your home and the installation position.
1. The Existing Hearth
One of the first things we look at is the hearth.
Different wood burners have different hearth requirements, including:
Hearth width and depth
Required projection in front of the fire
Position of the appliance on the hearth
Hearth construction
Required clearances around the appliance
In some replacement installations, the existing hearth may be suitable for the new wood burner.
In others, it may need to be modified, enlarged or completely replaced.
This is why it's worth checking the installation requirements before purchasing the new fire.
2. Clearances Around the Wood Burner
Modern wood burners have manufacturer-specified clearance requirements.
These can include distances from the:
Rear wall
Side walls
Corners
Furniture and combustible materials
Hearth edges
A replacement fire therefore needs to physically fit the available space while maintaining its required clearances.
A larger fire isn't automatically a better replacement.
3. The Flue Position
The position of the existing flue is another important consideration.
Different wood burners can have different flue outlet positions and dimensions. We look at how the proposed replacement fire will sit in relation to the existing ceiling and roof penetrations.
However, the existing flue system is not reused when Dr Flue replaces a wood burner.
A new compliant flue system is installed with the replacement wood burner.
The existing flue position can still influence which replacement options make the installation simpler and more practical.
4. Choosing the Right Heat Output
A replacement is also an opportunity to reconsider whether the old wood burner was actually the right size for the home.
The correct fire depends on factors such as:
Size of the area being heated
Ceiling height
Insulation
House construction
Open-plan versus divided rooms
How the heat needs to travel through the home
An oversized wood burner can be just as undesirable as an undersized one.
The goal is to select a fire that can operate properly while providing the level of heating the home requires.
5. Wetback Requirements
If your existing wood burner has a wetback, this becomes an important part of selecting its replacement.
The new wood burner needs to be suitable for the home's hot-water requirements and the existing wetback system needs to be considered as part of the installation.
This can significantly narrow the choice of suitable replacement fires.
6. Current Compliance Requirements
A wood burner that was installed 20 or 30 years ago was installed under the requirements that applied at the time.
A new replacement installation needs to meet today's requirements.
That means we don't simply assume that because the old wood burner fitted in a particular position, a new one can automatically be installed there in exactly the same configuration.
The complete replacement installation needs to be assessed.
7. Think About Future Parts and Servicing
A replacement wood burner should be a long-term investment.
Many wood burners are replaced at around 20 years of service, while well-made, highly crafted fires can continue operating for 30 years or more when properly maintained.
That's why we also recommend considering:
Build quality
Availability of replacement parts
Fire bricks
Baffles
Door seals
Air controls
Ease of servicing
Manufacturer support
Choosing a quality fire with good long-term parts support can make a significant difference over the life of the appliance.
So, Can You Install Any New Wood Burner?
Not necessarily.
The best replacement isn't simply the fire that looks best in the showroom.
It needs to work with your home's heating requirements and the practical limitations of the existing installation.
Before recommending a replacement, Dr Flue can assess the existing hearth, available space, clearances, flue position, heating requirements and overall installation.
That allows us to recommend wood burners that are genuinely suitable for the property rather than trying to make an unsuitable fire fit.
Planning a Replacement Wood Burner in Auckland?
If your existing wood burner is approaching the end of its service life, Dr Flue can assess the installation and help you choose an appropriate replacement.
From selecting the new fire through to the new flue system, installation and compliance, we can manage the complete replacement process.
Book a consultation with Dr Flue to discuss your replacement wood burner.