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EZ Heater - Hydro Water Heater Using Direct Steam Injection

The EZ Heater® is the industry leader in all hot water applications with its unique internal modulation, and self-cleaning ability. With instantaneous hot water where you need it, the EZ Heater is ideal for washing stations where maintaining a minimum temperature is critical, CIP (Clean in Place) systems, and anywhere that you need reliable hot water now. High velocity steam eliminates scale build up, making costly chemical baths and unexpected shutdowns a thing of the past.

How it Works

  • Directly plumbed into the process piping
  • Water enters the inlet flowing past the patented diffuser
  • Steam enters at the inlet traveling through the diffuser as it's injected into the water through small holes 
  • An actuator, controlled by the downstream temperature gauge, moves the stem plug exposing the necessary amount of holes, discharging the exact amount of steam needed to reach set-point temperature
  • The turbulent nature of this high velocity discharge enables steam to instantaneously penetrate, disperse and efficiently produce uniform heating

Internal Modulation

This unique patented design assures precise steam control and produces predictable results based on the position of the stem plug.  A variable-area steam diffuser meters steam flow at the point where steam and liquid first contact and mix.  This technique eliminates the need for an external steam control valve.

Choked Flow

Choked flow is the phenomenon of accelerating a vapor to maximum velocity by creating a pressure differential through an engineered diffuser.  Establishing choked flow precisely controls the heating of the liquid by metering the steam flow.

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  • Central Hot Water
  • Localized hot water systems for critical temperature water
  • Hose stations, spray bars, and tank spray balls
  • Ingredient water or tank heating
  • Water side of heat exchanger or jacketed tank heating
  • Clean in Place (CIP)
  • Can Topping
  • Jacketed vessels or reactors
  • Tunnel Pasteurization
  • Annealing
  • Boiler feed water

For more information on the EZ Heater’s water applications, click here.


  • On-demand hot water at precise temperature - accurately meet set-point temperatures at variable flow rates
  • No energy loss - 100% of the steam's heating energy is absorbed by the water, dramatically reducing energy costs
  • Worry-free operation - avoid unscheduled shutdowns; self-cleaning patented design, no scaling or fouling
  • Small footprint - small, compact design with easy installation
  • Positive return on investment (ROI) - unbeatable energy savings!


If “positive return on investment” caught your eye, check out our Energy Saving Calculator to see just how much our EZ Heaters can save you. No matter what the application is, we can provide readily available, highly-precise hot water at a lower operating cost than your current system.

Designed for specific operating conditions


The EZ Heater is made for your specific operating conditions.  We need to know a little bit about your process and plant set-up in order to design the heater or skid that will work best for your conditions.  Please fill out this form or contact us here.

For an overview of all of Hydro-Thermal’s products click here.

Five Common Hot Water Challenges in Meat Processing Guide
Five Common
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Product Literature

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Hydro-Thermal is the global leader in the development and manufacturing of Hydroheaters. Through our vast global channel partners, we support hydro heating in six continents and all industrialized areas. We create heating systems for a variety of industries including: pulp, paper, chemical, ethanol, food & beverage, metal, & more!

Hydro-Thermal Corporation 

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