Airtorch™ Air and Process-Gas Heaters

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MHI MTA 925-4 MHI MTA 925-2
MHI VTA and LTA Airtorch MHI VTA and LTA Airtorch
MHI 3 Phase High Flow Airtorch Systems MHI 3 Phase High Flow Airtorch Systems
MHI GVTA - High Temperature/High Pressure Solutions MHI 3 Phase Cluster Solutions

Simple 5-step selection process

Airtorch Quality and Smart Power MHI Certification

Quality Mark    DPF 1200C

Airtorch Use Sectors

Industrial Equipment, Lab and Analytical Equipment, Medical Equipment, Combustion simulation, Energy stoage devices and Simulation, Military and Defense, Pharmaceutical, Rubber and Plastics, Transportation, Water & Waste Water, Commercial, Melting, Adhesive Activation, de-soldering, Heat staking,Food Service, Process Heat, Accelerating Chemical Reactions, Laboratory, Transportation, Defense & Aerospace, Energy, Medical,Preheating process gases, High speed heat shrink installations, Pharmaceuticals, Energy Processes, Climate safe benefit, Curing adhesives, Hot Air Processor, Powder drying and high temperature high velocity reginme, Automotive, Packaging & Sterilization, Paper/Printing, BioFuels, Semiconductor processing, Soldering/Brazing, Textiles, Semiconductor, Energy Processes, Nuclear, Bio, Diesel, Process heater, gas heater, powder, gas-pre heater, air-pre heater, supplemental heater and many other process heating applications. Flow simulation whether combustion or high temperature viscous. wafer processing, metal finishing, Solvent drying,Steam and Air hybrid process heaters, Flow Air Heating, preheating, Hot Air Processor, Shrink Fitting, Synthetic Fabric Sewing. Pressure vessel, simulate, Baking, Laminating, Metal Working, Packaging, Plastic Welding, Sealing, Soldering and brazing, In-line heaters, Compact heaters, Parts cleaning, Biomass extraction , Bio- reclamation, Photoresist material, Semiconductor processing equipment, Supercritical fluid heating, Solvent replacement, Test beds, Life Sciences, Air, Steam, sCO2, Photovoltaic, Semiconductor processing, Curing and Drying, Electronics, Efficent Heat Shrinking, Thermoforming/Sealing [...]

Request Quote for DPF Airtorch™

The Airtorch™ is a highly scalable electric process air heater typically utilized as shown in the Airtorch Infographic (or click on any picture on the right side bar). The typical Airtorch model output is up to 1200°C (~2150°F).  They offer high flexibility and greater control of your process heaters - room temperature is assumed as 25°C for standard input - HI models allow even a 600°C input .  Several models available in each class.  Simple 5-step selection guide and flow as a function of temperature for various models.  MHI provides models for 750°C, 925°C, 1000°C, 1100°C and 1200°C.  Prices increase with power and temperature. 

Why MHI Airtorch™?   Very low pressure drop-highest temperatures-high efficiency-industry leading quality, price and delivery.    Pressure drops can cost the user a lot of  wasted expenditure.   See example here.

New:   Inline-Airtorch models for process heat are now offered with input up to 600°C into the Airtorch. The output is up to 1200°C (~2150°F). 

Please Request Information

High Power MVTA or High Pressure GTA

  • Single Phase Power to Three Phase Choose from 1KW, 3 KW, 4 KW, 12 KW, 24KW, 36KW, 60KW, 120KW, 144 KW, 180KW, 216 KW, 300KW and higher.  Choice of pressure vessels.

  • Plug in Voltages 120V, 240V, 380V, 400V, 440V, 480V, 600V.  Ask MHI about efficiency.

  • LTA - Up to 900°C. LTA is a process heater for air which requires a compressed air input.


    VTA - Up to 900°C. VTA is process gas heater with fan or blower capability. Please also see GVTA, MVTA-DPF up to 1100°C


    MTA - Up to 925°C. MTA925 is sealed process gas heater which can take compressed air or compressed gas input.  


    DPFUp to 1150°C-1250°C/~2200°F.  DPF models can take fan or blower input as well as a compressed air/gas input.

    Request Quote for DPF Airtorch™


    • MVTA - Up to 1000-1100°C. These are sealed process gas heater (THN class) with fan or blower capability.  Three Phase Devices.

    • GTA - For high pressure vessel Airtorch use.  Custom engineering. Please contact us directly for assistance.

*Unit Life and Safety:  MVTA units provide forgiveness for temperature exposures beyond their rated capacity even by an extra 100°C for many models.

Very High Temperature

Operating Temperatures to 1150°C-1200°C/~2150°F. DPF models can take fan or blower input as well as a compressed air/gas input.

MHI special technologies allow for:

  • Incredible Warranty.

  • Inlet temperatures can be high on specific models MVTA.

  • Pressure drop:  Very Low. MHI offers DirectFlow™ Airtorch.

  • We take advantage of our combined thermal knowledge across diverse equipment offerings to optimize and provide low friction Airtorch systems.

    Quick Selection Guide

    If the flow rate is is of the order of 2-40 scfm please choose MTA, VTA or LTA models or the MVTA925 models with flanges

    If the flow is higher than 40 scfm, please choose from the highly energy efficient MVTA models

    If the temperature required is above 1100°C please choose the DPF models

    When comparing Airtorch heating to other methods please note that the MHI Airtorch systems do not produce any appreciable sound.

    Quick Units-Conversionx: (800°C=1472°F) (925°C=1697°F)  (1000°C=1832°F), (1100°C=2012°F) (5 Bar=0.5 Mpa)

Need higher temperatures? Please don't hesitate to give us a call or contact us. The kW required depends on the temperature of the exit gas from the Airtorch™ models and the flow volume required. Please use Easy Design Criterion or please use this formula to calculate approximate temperature vs. flow rate for a fixed power for an Airtorch™ model number.  MHI also provides flow rate vs. temperature for TA and DPF models.  Request Graphs.

Allowed Air/Gas Inputs: Air/Gas from compressor or blower or fan may be attached (varies by model). Some Airtorch models also accept high temperature feed gas as an input. Airtorch™ models are highly efficient electric process heaters (inline, cross line and independently standing models are offered).   DPF models have very low pressure drop associated with them. Inputs such as Gas Cylinders, Compressors, Blowers and even fans may be used depending on the model. 

Airtorch Operation:   The flow rate and temperature are connected.   The heater cannot go beyond its rated temperature or power.   The thermocouple is integral to the heater.The principle of an air/gas heater is for flowing gas to heat within the residence time of heater/configuration.    The flow temperaturecurve is given on Power Vs Flow Calculator.

Flow Rate is Important:  If using a blower or fan the air flow will be controlled by the characteritics of the fan or blower.  Fans are employed when the drop in pressure of the system is no greater than approximately 50 in. w.c. (50 in. w.c./inches of H20 is approximately 1.8psi.) This condition remains true even when the fan output large CFM values. Blowers are considered in circumstances where larger pressure drops are present.

For LTA and MTA where the inlet flow is pressure driven, the flow rate is often set by an appropriate SCFM flow meter.  Minimum flow rate should be maintained.  MHI power controllers can be used to set power.

MVTA, GVTA type Airtorches™ and LTA's may be purchased with several exit configurations which are specific to the model.  In addition further manifolding is possible. 

Every MHI Airtorch has a maximum power rating, a maximum temperature and a pressure rating (if rated to higher than 1 atmospheric pressure).  Please follow the curve on Easy Design Criterion while operating safely within the device ratings.  The power should be fixed close to the rated power.   Please observe lllimits with care.  Please maintain a low flow cutoff sensor if used close to the highest rated temperature.  MHI airtorches are provided with multiple control and safety thermocouples and other safety devices.

FAQ?.  Whether to use Compressor or Blower?

Ans:  The Air torch units accept all inputs.  The most important issue is to not fall below the minimum SCFM rating or temperature for the maximum rated power.  Fans are employed when the drop in pressure of the system is no greater than approximately 10-50 in. w.c.