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Don’t make the mistake of purchasing a stove too big for
the area you need heated. Frequent damping down creates
a creosote build-up, increasing the risk of chimney
fires. The stove retailer will tell you how much heating
you need for a room or the total home area you plan to
heat.
There are two types of wood stoves; ‘cats’ use catalytic
combustors and ‘non-cats’ re-circulate the smoke and
burn it. A catalytic combustor stove produces a long,
slow controlled combustion that burns smoke instead of
allowing it to pollute the environment. It needs only a
minimum of cleaning and the internal parts should not be
touched. They will need replacing about every three
years. If smoke pours out of the chimney you need a new
combustor.
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A ‘non-cat’ stove uses a heavily insulated firebox to
more fully burn off smoke and toxins. It also has a
secondary combustion chamber to deal with soot particles
and gases. Since there is no combustor to maintain, it
doesn’t require as much attention as the ‘cats’. Both
give comparable performances long-term, due to new
regulations.
Both types of stoves should have a body made of cast
iron or plate steel at least a 1/4 inch thick. Of the
two, cast iron may require slightly more maintenance due
to the gaskets and cement used to seal the corners. If
the stove is a ‘cat,’ make sure the bypass plate is at
least 5/16th of an inch. When closed, it should be able
to grip a dollar bill tightly. The combustor should be
protected from direct flame by some kind of mechanism,
or else be located at the back of the stove.
In the non-catalytic stove the baffle is the most
critical area. It should be at least 5/16th of an inch
plate steel with v-shaped support beams to prevent
warping. Be sure you use dry wood in a ‘non-cat’ stove
or you’ll get high emissions. ‘Non-cats’ have a smaller
firebox than ‘cats’, which means they may require more
frequent loading.
Since a stove is considered to be a major investment and
you will hope to get many years of service from it, it’s
a good idea to ask for a third party opinion from a
chimney sweep about the brands available. He will have
experience in cleaning various brands and will often
know which are most trouble-free.
Once you have decided on a stove, make sure you have it
installed by an expert, who will do it to the right
specifications. Home-installed stoves tend to cause more
fire-damage than they are worth. Have it regularly
inspected by the fire department and follow their
recommendations and you should get many years of comfy
heating from your wood stove.
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