Electric Immersion Heaters With Temperature Control
Flanged immersion heaters are a primary type of electric heater used for higher kilowatt applications. They are commonly used to effectively heat liquids and gases inside of tanks and pressure vessels. Flanged heaters, including those in boilers, are rated for 2000 kilowatts or more.
Depending upon the application, immersion heater models vary by kilowatt rating, terminal type, and sheaths. Precise temperature controls and monitoring features are also available.
Types of Immersion Heaters
Hi-Watt sells a variety of immersion heaters, including:
Screw Plug Immersion Heater

Flanged immersion heaters have a simple installation process and are not difficult to maintain. Their design makes them ideal for heating gases and liquids in tanks and assorted pressure vessels, and are excellent for applications requiring higher kilowatts.
Over the Side Immersion Heater

Over-the-side immersion heaters (sometimes called through-the-side) are ideal for applications such as heating water, heating oils, solvents, salts and acids. Their versatile applications are enhanced with various optional sheath materials, specific kilowatt ratings, terminal enclosures and varying mounting methods specific to your needs.
Benefits of Immersion Heaters
Heating a liquid by applying a flame or electric burner to its container is generally inefficient and inconsistent. These heaters are submerged in gases or liquids, contacting the target substance directly. Some of the many advantages of immersion heating devices include:
- Rapid heat transfer to the target solution
- Safe, non-combustible operation
- Efficient heating through convection and conduction
- Easy powering off and on
- Minimal maintenance requirements
- Easy addition of thermostatic sensors and controls
Whether you are looking for ease of installation, higher kilowatt capacity or economic options, Hi-Watt offers a versatile range of heater designs and configurations. Our screw plug, flanged and over-the-side styles have you covered for any size, watt density, input power or connection style your specifications require.
Why Buy From Hi-Watt?
Since our founding, we’ve specialized in developing custom industrial heating solutions and forging long-lasting partnerships with our customers. When your business runs smoothly, we know we’ve succeeded.
Here are some of the benefits of purchasing immersion heaters from us:
- U.S.-based technical support to prevent downtime
- Same-day responses on urgent requests
- Fast turnaround times due to our available in-house inventory
- On-site field support with a 24-hour turnaround time for emergencies
- Skilled technicians and engineers who work hard to find the best combination of heaters for your applications
- Easy upgrades and replacements parts
- Professional advice and recommendations
- On-site assistance with facility expansions and integration
- Quality from the start from our working relationships with exceptional thermal products manufacturers
- Experience with a wide range of industries, from chemical processing to alternative energy
Screw plug immersion heaters are ideal for direct immersion heating of liquids, including all types of oils and heat transfer solutions. They are essential for fluid freeze protection, winterizing, hot or warm storage, and a range of other thermal applications.
Flanged Immersion Heater

Flanged immersion heaters have a simple installation process and are not difficult to maintain. Their design makes them ideal for heating gases and liquids in tanks and assorted pressure vessels, and are excellent for applications requiring higher kilowatts.
Over the Side Immersion Heater

Over-the-side immersion heaters (sometimes called through-the-side) are ideal for applications such as heating water, heating oils, solvents, salts and acids. Their versatile applications are enhanced with various optional sheath materials, specific kilowatt ratings, terminal enclosures and varying mounting methods specific to your needs.
Benefits of Immersion Heaters
Heating a liquid by applying a flame or electric burner to its container is generally inefficient and inconsistent. These heaters are submerged in gases or liquids, contacting the target substance directly. Some of the many advantages of immersion heating devices include:
- Rapid heat transfer to the target solution
- Safe, non-combustible operation
- Efficient heating through convection and conduction
- Easy powering off and on
- Minimal maintenance requirements
- Easy addition of thermostatic sensors and controls
Whether you are looking for ease of installation, higher kilowatt capacity or economic options, Hi-Watt offers a versatile range of heater designs and configurations. Our screw plug, flanged and over-the-side styles have you covered for any size, watt density, input power or connection style your specifications require.
Why Buy From Hi-Watt?
Since our founding, we’ve specialized in developing custom industrial heating solutions and forging long-lasting partnerships with our customers. When your business runs smoothly, we know we’ve succeeded.
Here are some of the benefits of purchasing immersion heaters from us:
- U.S.-based technical support to prevent downtime
- Same-day responses on urgent requests
- Fast turnaround times due to our available in-house inventory
- On-site field support with a 24-hour turnaround time for emergencies
- Skilled technicians and engineers who work hard to find the best combination of heaters for your applications
- Easy upgrades and replacements parts
- Professional advice and recommendations
- On-site assistance with facility expansions and integration
- Quality from the start from our working relationships with exceptional thermal products manufacturers
- Experience with a wide range of industries, from chemical processing to alternative energy
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