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High Temperature-Resistant Air Heaters

MPI Morheat air heaters feature an open coil of high temperature-resistant wire electrically isolated in a stainless steel sheath. In this design, the heated air passes directly over the resistance wire, maximizing heat transfer. MPI Morheat brand air heaters are used for heat staking, plastic welding, lamination, drying, heat sealing, and any other operation where air needs to be heated up to 1000°F.

1/2” and 3/4” diameters are standard with other sizes available.

Several 1/2” diameter air heaters are in stock for same-day delivery.

Options such as male and female fittings for inlets and outlets, thermocouples to monitor outlet temperature, and pin connectors are also available

  • 1/2”, 5/8” or 3/4 diameter 304 Stainless Steel Sheath.
  • Nickel-Chromium Coils.
  • High temperature leads or 3 pin connector.
  • Epoxy Seal
  • Copper Tee
  • 120 Volt and 240 Volt

MPI Morheat Air Heaters must be used with clean air only and are able to handle air temperatures as high as 1000°F. Please see the table below for more information on Air Heater Specifications.

Outlet Temperature= Ambient Air Temperature + Temperature Increase ((watts x 3.2)/ CFM)

 1/2” OD heater3/4”OD heater
Lead Wire Size22 ga.18 ga.
Maximum Amperage10 amps15 amps
Female NPT Size1/8”3/8”
Male NPT Size3/8”3/4”
Maximum CFM10 SCFM22 CFM

MPI Morheat manufactures and stocks several variations of 1/2” diameter air heaters for:

  • Heat Staking
  • Shrink Fitting
  • Plastic Welding
  • Laminating
  • Sealing
  • Drying
  • Male or Female pipe thread on inlet or outlet
  • Brass or Stainless Steel fittings
  • Flanges
  • SJO Cord
  • Elbow on Outlet
  • Stainless Steel Tee
  • Various volts and Watts
  • Custom configurations and sizes
  • 1/2”, 5/8” and 3/4” diameters available
  • Optional Thermocouple at outlet for temperature control


air heater with leadsAir Heater with Leads DimensionsAir Heater with Leads


air heater with 3 pin plugAir Heater with 3 pin plug dimensionsAir Heater with 3 Pin Plug
air heater with leads female nptAir Heater with leads female NPT close up

Air Heater with Female 1/4″ FTP on Outlet

  • Can be used on either inlet or outlet
air heater with male NPT on outletAir Heater with male NPT dimensions

Air Heater with Male 3/8″ NPT on Outlet

  • Can be used on either inlet or outlet