|
GG Heaters | TF
Heaters | GF Heaters | Nexus
Heaters
 |
SIZES:
|
30,000 to
120,000 BTU Input |
|
APPROVED
FOR:
|
Residential
and Commercial use |
|
MOUNTING:
|
Hanging or
bottom mount |
|
EFFICIENCY:
|
82 - 83% |
|
GAS
TYPE:
|
Propane or
natural gas |
|
VENT
TYPE:
|
Power vented
and capable of separated combustion |
|
PRICE
RANGE:
|
$600 - $900 |
|
FEATURES:
|
Low profile
(our smallest unit heater) |
|
CLICK
HERE to view Sterling GG heaters
|
|
SIZES:
|
100,000 to
400,000 BTU Input |
|
APPROVED
FOR:
|
Commercial
and Industrial use |
|
MOUNTING:
|
Hanging |
|
EFFICIENCY:
|
83% |
|
GAS
TYPE:
|
Propane or
natural gas |
|
VENT
TYPE:
|
Power
vented |
|
PRICE
RANGE:
|
$900 - $1600 |
|
FEATURES:
|
Best value
commercial unit heater |
|
CLICK
HERE to view Sterling TF heaters
|
| |
|
Sterling
GF Shied Gas Heaters
|
|
SIZES:
|
150,000 to
400,000 BTU Input |
|
APPROVED
FOR:
|
Commercial
and Industrial use |
|
MOUNTING:
|
Hanging |
|
EFFICIENCY:
|
83% |
|
GAS
TYPE:
|
Propane or
natural gas |
|
VENT
TYPE:
|
Power
vented |
|
PRICE
RANGE:
|
$1300 - $2500 |
|
FEATURES:
|
Stainless
steel casing and exchanger |
|
CLICK
HERE to view Sterling GF heaters
|
|
Sterling
Nexus +90% Efficient Gas Heaters
|
 |
SIZES:
|
50,000 to
400,000 BTU Input |
|
APPROVED
FOR:
|
Residential
and Commercial use |
|
MOUNTING:
|
Hanging |
|
EFFICIENCY:
|
95 - 97% |
|
GAS
TYPE:
|
Propane or
natural gas |
|
VENT
TYPE:
|
Power
vented and capable of separated combustion |
|
PRICE
RANGE:
|
$2300 - $5300 |
|
FEATURES:
|
Most
efficient and advanced unit heater
Variable heat output from 35% to 100%
Can be vented with PVC pipe |
|
CLICK
HERE to view Sterling Nexus heaters
|
Sterling Heater Comparison Chart
Click on the underlined text to view more information
about the heaters.
|
GG
|
24K - 97K
|
82-83%
|
Open
or Sealed
|
Power / Direct
|
|
|
TF
|
121K - 324K
|
83%
|
Open
|
Power
|
|
|
GF
|
121K - 324K
|
83%
|
Open
|
Power
|
|
|
Nexus
|
48K - 384K
|
95-97%
|
Open
or Sealed
|
Power / Direct
|
|
|
Heater Output Range
|
| The output range is measured in thousands (K)
of BTUs. This is the measure of heat output from a heater. To determine how much
heat is needed for a greenhouse, you can use our Greenhouse
Heater BTU Calculator. |
|
Heater Mounting Types
|
| Heater efficiency is the percentage
of heat produced that is not exhausted to the outside of the structure being heated.
The higher the efficiency, the lower your heating cost will be. |
|
Heater Combustion Types
|
|
Open
|
This heater uses inside air for combustion. It
is fine for areas that do not have contaminants in the air that can damage the
heater. The burner is not sealed inside the heater so flammable liquids should
not be placed close to the heater. |
Sealed/
Separated
|
This gas heater uses outside air for combustion
which is better for areas that have a lot of contaminants in the air like wood
shops. The burner is sealed inside the heater so all of the air used for combustion
is brought in from outside the structure. This type of heater has an intake and
exhaust pipe (either separate or one inside the other) which is run to the outside
of the structure. |
|
Heater Vent Types
|
|
Unvented
|
Unvented gas heaters are not vented to the outside.
Gases produced from combustion are released directly into the heated area. This
type of gas heater is only recommended for temporary use in a greenhouse because
many plants are very sensitive to the by products. |
|
Gravity
|
These gas heaters require vertical venting because
the exhaust must rise through the vent pipe and is expelled outside. They are
dependent on natural drafts to move the exhaust through the vent pipe. Outside
air must be brought into the structure to replace the exhausted air. |
|
Power
|
Power vented heaters are equipped with a blower
that pushes the exhaust air through the vent pipe and outside of the structure.
Most power vented heaters can be vented vertically or horizontally and use smaller
vent pipes than similar size gravity vented heaters increasing their efficiency.
Outside air must be brought into the structure to replace the exhausted air. |
|
Direct
|
Direct venting is unique to sealed combustion
heaters. It uses 2 pipes (ususally one pipe placed inside the other) to provide
the heater with both an inlet and exhaust. When heated exhaust air leaves the
vent pipe, it automatically pulls in the same amount of outside air in exchange
for combustion. The outside air is also heated as it passes over the exhaust pipe
and into the combustion chamber. No additional outside air must be brought into
the structure to replace the exhausted air. This system can be gravity or power
vented. |
Not sure what size heater you need for your greenhouse? Use our Heater
BTU Calculator.
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ACF Greenhouses
380 Greenhouse Drive
Buffalo Junction, VA 24529
434-374-2706 Phone, 434-374-2055 Fax
888-888-9050 Toll Free
Copyright Aarons Creek Farms, Inc. All Rights Reserved.
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