Specifications

Wood species

Energy yield

(millions of BTU/cord)

High energy yield

Oak 29

Sugar Maple 28

Beech 26

Yellow birch 25

Ash 24

Elm 23

Medium energy yield

Larch (Tamarack) 23

Red Maple 23

Douglas red fir 23

Silver birch 22

Alder 18

Poplar 17

Hemlock 17

Low energy yield

Spruce 17

Pine 17

Bass 16

Fir 13

Data provided by Energy, Mines and Resources – Canada

TABLE 3.2 Energy yield for wood species

3.2.1 The use of manufactured logs

There are numerous types of manufactured logs sold on the market. You must be very careful with

this type of product. Many brands of manufactured logs contain chemical additives. DO NOT

BURN ANY MANUFACTURED LOGS CONTAINING CHEMICAL ADDITIVES. If you do, you

may damage your stove and void the warranty. Logs containing chemical additives burn a lot hotter

and were designed for decorative fireplaces. Decorative fireplaces generally have larger, cooler, and

less air-tight fireboxes. Your E.P.A Enerzone stove, on the other hand, has a smaller, completely

sealed firebox which attains much higher temperatures. It is therefore not designed to support

excessive heat caused by the addition of chemicals in manufactured logs. Manufactured logs made

of 100% wood residues do not cause any threat to your stove. You must however be careful.

Manufactured logs typically release a much larger heat output over a short period of time. Therefore,

you cannot place a large quantity of such logs into your stove, like you would with regular cord

wood. Start with one log, and gradually increase the load to 3 or 4 logs and see how your stove

reacts. Use a chimney (flue) thermometer and make sure that temperatures remain within the normal

operating range.