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Modine PTS Separated Combustion Heater

The Modine PTS Separated Combustion Heater is a powerful and efficient heating solution designed for spaces with high levels of humidity, dirt, or dust. With its separated combustion design, the heater draws in clean air for combustion, ensuring optimal performance and efficiency. This makes it ideal for use in harsh environments, such as garages, warehouses, and workshops. The PTS model is available in natural gas or propane options and is equipped with a range of safety features to ensure safe and reliable operation. With its durable construction and exceptional performance, the Modine PTS Separated Combustion Heater is a reliable and cost-effective heating solution for a variety of applications.
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Product Details

  • In-shot burners fire each heat exchanger tube for reliable performance, ease of service, and decreased noise on ignition.
  • Same-size vent and combustion air inlets make installation easier.
  • Longer allowable vent lengths (up to 50′ vs 30′) providing greater installation options.
  • Round vent pipe and combustion air inlet pipe connection
  • Automatic reset vent pressure switch is designed to prevent operation of the main burner in the event there is restricted venting of the flue
  • Integrated direct spark control board provides digital control of the air mover, inducer, ignition, gas valve, and flame sense
  • Control Step Down Transformer used to step down from 115v to 24v for the gas controls, fan delay relay, field-supplied motor start, and more.
  • Remote flame sensor verifies ignition of all burners, monitors the flame single, and communicated with the integrated circuit board
  • The high limit control switch is mounted in the air stream and will shut off the gas supply in the event of overheating
  • Designed, Engineered & Assembled in the USA
  • Less maintenance in dusty environments.
  • Improved efficiency by using outside air for combustion.
  • Greater durability in hostile environments (environments possessing substances that may deteriorate the performance of the unit).
  • External gas connections.
  • Quiet operation.
  • Uses natural or propane gas.
  • We are certified for commercial and industrial use.
  • Durable polyester powder coat paint finish.
  • Install quickly and easily with field wiring connections and knockouts for quick access to gas and electricity.
  • Standard power exhaust simplifies side-wall or roof venting with a small-diameter vent pipe.
  • Permanently-lubricated motor for trouble-free dependability.
  • 10-year warranty on the heat exchanger.
  • 2-year warranty on Parts Warranty


  • 30, 60, and 90-degree air deflector hoods
  • Vibration Isolation Kit
  • Summer-Winter Toggle Switch
    • Power-exhausted (HD)
    • Power-exhausted with Blower (HDB)
    • Separated combustion (HDS)
    • Separated combustion with blower (HSB)


    • 30, 60, and 90-degree air deflector hoods
    • Vibration Isolation Kit
    • Summer-Winter Toggle Switch


CFMAir Temp RiseMounting Height MaxHeat ThrowMotor HPDimensions
L x W x H
Vent Diameter (kit sold separately)
PTS150150,000120,000214053°15'51'1/635.5 " X 31.79" X 23.1"4"
PTS175175,000140,000272548°14'50'1/642.52" X 32.83" x 25.81"4"
PTS200200,000160,000287052°15'53'1/342.52" X 34.44" x 25.81"6"
PTS250250,000200,000399547°18'62'1/342.52" x 33.83" x 31.31"6"
PTS300300,000240,000454550°19'69'1/242.52" x 33.83" x 31.31"6"
PTS350350,000280,000528050°18'65'1/242.52" X 34.83" x 39.56"6"
PTS400400,000320,00059955121'74'3/442.52" X 34.83" x 39.56"6'

Additional Information

This heat-loss Btu calculator will help you decide on the size of the heater needed for your greenhouse. First, you need to know the Surface Area of your greenhouse. Use our Greenhouse Surface Area Calculator to find the total square feet of the exposed surface area of your greenhouse. Then, use our Greenhouse Heater BTU Calculator to find out the minimum heater BTU rating to keep your greenhouse at an inside desired temperature during the winter.