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Sterling TF200A1NS111

200,000 BTU, Power Vented, Natural Gas, Hanging Furnace

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The tubular unit heater Model TF is a propeller type unit heater that combines the quality and reliability you have come to know with Sterling. TF Series gas-fired unit heaters offer the latest tubular heat exchanger technologies with an innovative "In-Shot" burner system for superior durability, reliability, and performance in a commercial unit heater. Sterling warranties the heat exchanger, flue collector, and burners of each heater to be free from defects in materials and workmanship for 10 years. 

Standard energy saving features like the direct spark ignition and power venting reduce standby losses and offer improved seasonal efficiencies. The model TF unit is certified by ETL as providing 83% thermal efficiency. 

The Sterling Model TF unit heater is ETL certified in accordance with categories I and III venting requirements. This certification allows units to be vented both vertically and horizontally using either single wall or double wall venting materials. This venting flexibility of the Model TF unit heater makes installation easier and more cost effective by allowing the installer to use existing venting components. 

Standard Features

  • 20 gauge tubular heat exchangers
  • 9 sizes ranging from 100 to 400 MBH
  • Inshot type burner
  • Single stage combination gas valve
  • Hot surface pilot ignition system
  • 20 gauge jacket panels w/ baked enamel finish
  • Individually adjustable and removable louvers
  • Power vented
  • Easy access control panel
  • Certified for category I and III venting
  • Terminal strip low voltage wiring
  • 83% thermal efficiency
  • 10 year warranty
  • Factory fire tested

This hanging furnace can be adapted for propane using the conversion kit found in the Accessories section.

Heating Capacity

The amount of heat, rated in BTUs that the item can produce.

Heating Capacity
200000 BTU
Effective Heating Capacity (BTUs)
Efficiency Percentage (AFUE)
83 %
Fuel Type
Natural Gas
Fan Horse Power
0.33 HP
Combustion Type

Separated combustion draws outside air into the unit combustion chamber where it is burned with the fuel and then vented out with the exhaust. Reduces the common concerns about dusty, dirty, humid or aerosol environments.

Power Vented (or open) combustion pulls the the combustion air from inside the building and pushes the exhaust gases outside using a blower.

Combustion Type
Power Vented
Motor Type
Permanent Split Capacitor
Certified for
Commercial , Industrial
Piping Connections - Gas
1/2 inches
Vent Connection

The diameter of the vent connection on the furnace.

Vent Connection
5 Inches
Product Weight
201 lbs
Fan Speed RPM
1140 RPM
Meets CSA Standards

Canadian Standards Association

Meets CSA Standards
37 1/4 Inches
43 1/2 Inches
33 3/4 Inches
120 Volts
60 Hz
Voltage Phase
Heat Exchanger Warranty
10 Years
Parts Warranty
1 Year
*Any accessories purchased with the Sterling TF200A1NS111, are eligible for free shipping.
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