Corn Burning Boiler | Corn Burning Furnace
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In this article we'll be looking at the PB-150 Traeger/Pinnacle Pellet/Corn Boiler and the
A-Maize-Ing LDJ series corn furnace and LDJ series corn boiler.

Heat output
The Treager multi-fuel corn/pellet boiler offers variable BTU input from 85,000 to 130,000

The LDJ series furnace offers two models, one with a maximum 100,000 BTU rate, and
one with a variable rate from 80,000 to 165,000 BTU. Obviously, the ability to control the
BTU rate is an important tool for managing heating costs.

The LDJ series corn boiler is also available in two sizes, each with BTU rates identical to
the furnace models.

Hopper capacity
Hopper capacities vary according to manufacturer. The Traeger PB-150 boiler comes
equipped with a 160 pound hopper. The hoppers for the  LDJ series boilers and furnaces
have a capacity of 784 pounds, or 14 bushels of corn. Winter time consumption of corn is
around 2 bushels per day.

Corn Boilers
When you’re shopping for a corn boiler, make sure it’s a closed system. A closed system
has many advantages over an open system.  

An open system is vented to the atmosphere and needs a constant source of water to
replace the amount lost to steam and evaporation. The oxygen in the water of an open
system facilitates the formation of rust and will cause problems with the water jacket.

A closed system is filled one time with about 18 gallons of water and then sealed. No
oxygen means no rusty water jacket. Boilers operate at 12-15 psi with the safety relief
valve opening at 30 psi.  

The boiler normally maintains temperature between 160 and 180 degrees. This is too hot
for an in-floor hydronic system which normally operates at 90-110 degrees. But the
addition of a mixing valve will bring the water temperature down to the recommended

Standard features on the Traeger boiler includes a domestic hot water coil and a hydronic
water pump for in floor/under floor radiant heat.

The LDJ ASME Certified closed loop boiler can be installed in a different building other
than the one being heated.  The boiler system can be connected directly with an existing
hot water boiler or radiant floor system. The boiler may also connect to a forced air
furnace using a water to air heat exchanger.

Corn Furnaces
Corn furnaces, like conventional furnaces, are available as updraft or downdraft units.
Updraft units are used when the furnace is installed in the basement, below the heated
floors. Downdraft units are used when the furnace is installed on the same floor as the
one being heated.

Horizontal, or lowboy installations, where the furnace is laid on its side, are also possible
with corn furnaces.

Corn Furnace or Boiler Venting
Proper venting is very important to the health and safety of your family. Keep the
distance from furnace to vertical flue as short as possible. The rule of thumb is 15 feet

You can use inexpensive black flue pipe between the boiler/furnace and chimney, but in
damp basements it corrodes quickly and will probably have to be replaced every 3-4
years. A permanent but more expensive solution is double wall stainless steel black
stove pipe.

Your chimney will need a stainless steel or crack-free clay lining. Galvanized steel or
aluminum won’t work because the condensation from burning corn is more corrosive than
from gas or oil. The prices for stainless steel chimney liners start at $450 for a 25 foot kit.

The furnace or boiler you consider should be UL listed. The boiler tank should also be
certified by the American Society of Mechanical Engineers (ASME). A UL listed boiler or
furnace should have no effect on your home owner’s insurance policy, but check with
your agent to be sure.

How Much Does A Corn Furnace Or Corn Boiler Cost?
The price of a corn furnace or boiler depends on its size measured in BTUs. The current
cost of the Traeger PB-150 corn/pellet boiler is $6,900 which includes shipping in the
continental United States.

The current prices for the LDJ boilers and furnaces are as follows:
LDJ Boiler 100,000 BTU $4,800
LDJ Boiler 80,000-165,00 BTU $6,000

LDJ Furnace 100,000 BTU $4,100
LDJ Furnace 80,000-165,00- BTU $4,900

Once you’ve decided which brand of boiler or furnace to buy, make sure it’s the latest
model available. Don't buy last year's model and pay extra for optional equipment that
might come standard with this year's model.
The corn burning boiler and furnace are becoming extremely popular, especially if you
live near a grain elevator where you can buy corn in bulk.

The difference between a corn furnace and corn boiler is exactly what their names imply.
The furnace provides forced air heating and the boiler is used for radiators, baseboard
heaters or hydronic (liquid) radiant in floor/under floor heat.

Both types of systems have fuel efficiency ratings of 80-85% and can be installed either
as an add on to an existing system or as a stand alone unit.
PB-150 Traeger/Pinnacle Pellet
or Corn Boiler w/160 lb Hopper
A-Maize-Ing LDJ Corn Boiler
w/784 lb Hopper
A-Maize-Ing LDJ Corn Furnace
w/784 lb Hopper