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Hot Plates & Radiators

Thermoplate™ and Glow Panels

Thermoplates and HeatPads are rated by the temperature and surface area.

Glow Panels are rated by the device power, radiation area and the radiating temperature.







Up to 3.5" diameter

Slim Line


Up to 48" wide



Heated Wall Glow Panel

High temperature grill

Request Microheater™ Quote

MHI offers a variety of specialized surface and radiative heaters

High Life, High Warranty, High Power, High Temperature, High Heat-up Rate, Large Hot Plate Size

Thermoplate Models



Hot Plate Size

9"L x 9"W

Hot Plate Size

18"L x 18"W

MHI Controls




18"L x 18"W
HP220-GAXP-600 (18x18)


Single Phase


9"L x 9"W
HP220-GAXP-1000 (9x9)

18"L x 18"W
HP220-GAXP-1000 (18x18)


Single Phase


9"L x 9"W

18"L x 18"W


Single Phase


9"L x 9"W


NA or Custom

MHI Controls


9"L x 9"W


NA or Custom

MHI Controls

 Request Information.


Glow Panel Radiator Models

Glow Panels

Heat with >150 W/

18"L x 22 "W

Vertical or Horizontal

Special Industrial

24"L x 24 "W

36"L x 36 "W


Thermoplate™ Features

MHI Thermoplates™ are an industrial grade, high power, high temperature hot plate capable of reaching temperatures of 1400°C within 4 seconds after initially reaching full power. Ideal for use as a laboratory hot plate. Thermoplates™ feature a stainless steel construction and electronic controls. Thermoplates™ are offered with quartz or ceramic tops, both exhibiting excellent uniformity.

General Information
  • Radiative Power: High power relative to other hot plates available (up to 7 kW for Thermoplate).  Please request quote.
  • Temperature:  Up to 1400°C depending on model.
  • Construction:  Stainless steel construction.  See pictures below for display of complex ceramics mated for high temperature and thermal expansion considerations.
  • 4 Second heat-up rate after reaching full power.
  • Sleek Quartz or Radiative Ceramic top for easy cleaning and rapid heat up. Special 1400°C tops- please contact MHI.
  • Spiral and other elements give extremely uniform temperature distribution.
  • Special high uniformity RTP heaters are also available. 
  • Independently locatable control electronics shown below.
  • MHI is the leader for calibration of the device to process for all Thermoplates.

Internal features of the Thermoplate construction include combinations of special ceramics and metals with the UltraSpiral heating

element as shown in pictures below.  Choice of tops (closed and open) up to 1800°C.  Please contact MHI for possibililities.

closed top radiator

Click for Ceramic Containers and Plates.  Easy on-line purchase.


Complex Heating Element Provides Excellent Uniformity

in Thermoplates.  Years of Use.Best Grill top Craftmanship

Request Microheater™ Quote


Superior Craftsmanship

across comples thermal systems


Request Microheater™ Quote

High Temperature Grill Top 

Workmanship with composites

MHI Technology in high-temperature metal-ceramic

composites and thermal matching

  abiity, ensure long service-life.



Request Microheater™ Quote

Thermoplate™ Model Numbers

Thermoplate™ Models

Thermoplates™ feature MHI's patented heating elements, allowing for optimal performance. Ideal for use as a hot plate. Thermoplates™ feature a rugged stainless steel base and a special ceramic composite tops for thermal shock and temperature requirements..

Standard input voltages are 220/230/240V. 

High Temperature Hot-plate Models by MHI

HP220 Models


Heated Region

9"L x 9"W


6.5 ft x 6.5 ft


Measurement for Process and Plate or Part Temperature or OTC.

Model Number Temperature Heated Surface Dimensions
HP220-GAXP-1000(9x9) Up to 1000°C (1832°F) 9"L x 9"W with comprehensive controls
HP220-GAXP-1000 (18x18) Up to 1000°C (1832°F) 18"L x 18"W with comprehensive controls
HP220-HIGHBO-1200 (9x9) Up to 1200°C (2192°F) 9"L x 9"W with comprehensive controls
HP220-GAXP-1200 (18x18) Up to 1200°C (2192°F) 18"L x 18"W with comprehensive controls
HP220-HIGHBO-1400 Up to 1400°C (2252°F) 9"L x 9"W with comprehensive controls

Custom Large Thermoplates with high temperatures.

Single Phase 12.5 kW 208-240V

Three Phase, 36k, 72kW  240V 3Phase

Contact MHI

Models up to 600C/1000C/1200C/1400C

24"x24"Thermoplate (Hot Plate). Comprehensive controls,  XPAN

54"x54" (Custom Designs) Thermoplate.  Hot Plate. Comprehensive controls. TRIPAN.

Request Microheater™ Quote


HeatPad™ ASTM E2021

The HeatPad™ is highly efficient.  HeatPads™ feature integrated thermocouples.  Watts 100-400 Watts.

HeatPad™ Microheaters (1000°C and 800°C Models)

PH-GAXP - Thermopad

Unique high watt density, one-sided circular spot heater
1", 2", 3" and 3.5" models. 


Click for Price and Availability

Maximum Temperature

Key Selection Feature

General specifications: 

PH-G4 Models ~1150°C and 400 Watts for largest size.


Power Plate 4500 Watts 

PH-G4 models available in 1" - 3.5"


PowerPlate High Temperature High Power HP220-GAXPC-600/900

Process objectives require calibration with MHI device thermocouple

Online Store


GlowPanel™ Radiators. Use for Rapid Heat-up Rate. 

Glow Panels are designed for high heat flux objectives.  Please review Heat-flux calculator.

Model #
Size Power for Panels Maximum temperature of heating elements

Custom Radiative Vertical Wall.  Glow Panel or Thermoplate

High Poer Density Heater

18" x 20" Model shown

Model:  GP(W)-24 (24 kW)

Window type with stand.

High power density ~up to 150W/ or ~22 W/ over the large surface.  

Combine with efficient Airtorch for best electric drying.


~ 4 - 72 kW

Up to 1900°C depends on model.

Custom.  Please review Heat-flux calculator.


GAXP Glow Panel

Ceramic Base
14" x 14" x 2"
Heater Size about 200mm diameter for
GP- GAXP-6.5


~ 4.5kW Up to 1400°C depends on model. Please review Heat-flux calculator.

Hot Top Radiators

Hot Tops

Hot-Tops.  Patented. ~ 6 kW

HotTops may be controlled

over a wide power and

temperature range.

72 KW
For MegaWatts (MW/m2) Power Density
Thermocouple access point in ceramic base for reference temperature


Comparing typical Gas Burners to Electric GlowPanels™ 

Please compare the Power and Temperature

Power Rating Conversion

  2 kW = 6,829 BTU/hr

90,000 BTU/hour = 26.4 kiloWatts (kW)

The radiation intensity increases with temperature 

A faster heat-up and drying results from a higher temperature and higher power

Material that is

Combusted/ Burned

Typical Flame Temperature

Average* (approximate)

Natural Gas (Methane)

900~1500°C (1652-2732°F)

Charcoal Fire

750~1200°C (1382-2192°F)

Typical Candle Flame

1100°C (2012°F)

No combustion. MHI GlowPanel™

Up to 1900°C (3452°F)

(Several models 1400°C - 1900°C )

Novel MHI Devices  For MegaWatts (MW/m2) power density

* Source: Note that the average temperature is not the peak

temperature which could be higher.  MHI patented materials are considered in the comparison.

Glow panels offer non-turbulent heating.

Compare the Power Density of Lasers, Sunlight, Gas Flames and More.


This class of GAXP™ Heater is classified as a semi-finished module, which needs to be installed only by certified electricians who are cognizant of the dangers from exposed electrical and thermal systems. Please do not hesitate to have your electrician contact MHI for questions.

Please email us or call (513) 772-0404


Control Systems
MHI Furnace Controls

Many of MHI's electronic furnace controllers feature multiple voltage inputs, overtemperature controls, programmable cycles and a number of other features.

For more information about MHI's control panels, Please Contact Us or More Information on Panels.



3 Phase

Furnace Controller


Single Phase

MHI Data Acquisition and Control Software+Hardware (MHI DACS)
MHI thermal devices are compatible with MHI DACS for furnace controls, step programming, data logging and more. DACS also allows for remote furnace control, allowing one central location to control multiple devices. MHI DACS
MHI DACS Software


Request Thermoplate™ Quote

Customer Feedback

Hot plate:
“...experience was that the hot plate center would get to temperature first then over time the edges would come up to temperature and be uniform. I believe once steady state was reached the uniformity was +/- 2 or 3C."

Please call MHI on details and full explanation. The uniformity depends on the thermal environment and other factors.

Read more testimonials

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©Micropyretics Heaters International Inc. 1995 - 2019
750 Redna Terrace Cincinnati, OH 45215, USA
Telephone: 513-772-0404 | Fax: 513-672-3333