Selecting an Immersion Heater
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Point-of-Use Water Heaters
Also called tankless water heaters, these provide hot water on demand and take up less space than heaters with a tank. They are easier to install than gas tank heaters and don’t require a relief valve. All turn on when water flows through the heater and turn off when the flow stops.
Estimated yearly energy cost is based on electricity cost of $0.12 per kWh. For more information, visit www.ftc.gov/energy.
Heaters with an adjustable thermostat let you set the exact water temperature you need. Screws are inside the enclosure to prevent accidental movement.
Heaters without temperature control do not provide precise control. The temperature of the water coming out depends on the temperature of the water going in.
Heater for four faucets can be used with circular multistation wash fountains or a single shower.
| Water Temp. Rise | For No. of Faucets | Wattage, W | Current, A  | Max. Water Temp., °F | For Water Pressure Range, psi | Flow Rate, gpm | Ht. | Wd. | Dp. | Each | |
240V AC, Single Phase | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 102° F @ 0.5 gpm 26° F @ 2 gpm 34° F @ 1.5 gpm 51° F @ 1 gpm | 1 | 7,500 | 32 | 140° | 30 to 150 | 0.2 to 2.5 | 9 3/4" | 5 1/4" | 3" | 00000000 | 0000000 |
| 130° F @ 0.5 gpm 32° F @ 2 gpm 43° F @ 1.5 gpm 65° F @ 1 gpm | 1 | 9,500 | 40 | 140° | 30 to 150 | 0.2 to 2.5 | 9 3/4" | 5 1/4" | 3" | 00000000 | 000000 |
| Water Temp. Rise | For No. of Faucets | Wattage, W | Current, A | Max. Water Temp., °F | For Water Pressure Range, psi | Flow Rate, gpm | Ht. | Wd. | Dp. | Each | |
240V AC, Single Phase | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 32° F @ 4 gpm 43° F @ 3 gpm 52° F @ 2.5 gpm 65° F @ 2 gpm | 1 | 19,000 | 80 | 180° | 40 to 150 | 1.5 to 4 | 10" | 10 1/2" | 3" | 00000000 | 0000000 |
| 43° F @ 3 gpm 52° F @ 2.5 gpm 65° F @ 2 gpm 87° F @ 1.5 gpm | 4 | 19,000 | 80 | 110° | 40 to 150 | 0.7 to 3 | 10" | 10 1/2" | 3" | 00000000 | 000000 |
Water Heaters | Replacement Heating Elements | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water Temp. Rise | For No. of Faucets | Wattage, W | Current, A | Estimated Yearly Energy Cost | Max. Water Temp., °F | For Water Pressure Range, psi | Flow Rate, gpm | Ht. | Wd. | Dp. | Each | Each | ||
120V AC, Single Phase | ||||||||||||||
| 41° F @ 0.5 gpm | 1 | 3,000 | 25 | $74 @ 0.2 gpm | 150° | 30 to 150 | 0.3 | 10 1/2" | 5 1/4" | 3" | 0000000 | 0000000 | 000000 | 000000 |
208V AC, Single Phase | ||||||||||||||
| 56° F @ 0.5 gpm | 1 | 4,100 | 20 | $74 @ 0.4 gpm | 150° | 30 to 150 | 0.4 | 10 1/2" | 5 1/4" | 3" | 0000000 | 000000 | 000000 | 00000 |
240V AC, Single Phase | ||||||||||||||
| 43° F @ 1.5 gpm 65° F @ 1 gpm | 1 | 9,500 | 40 | $74 @ 0.8 gpm | 150° | 30 to 150 | 0.8 | 10 1/2" | 5 1/4" | 3" | 0000000 | 000000 | 0000000 | 00000 |
| 48° F @ 0.5 gpm | 1 | 3,500 | 15 | $74 @ 0.3 gpm | 150° | 30 to 150 | 0.3 | 10 1/2" | 5 1/4" | 3" | 0000000 | 000000 | 000000 | 00000 |
| 75° F @ 0.5 gpm | 1 | 5,500 | 23 | $74 @ 0.5 gpm | 150° | 30 to 150 | 0.5 | 10 1/2" | 5 1/4" | 3" | 0000000 | 000000 | 000000 | 00000 |
277V AC, Single Phase | ||||||||||||||
| 56° F @ 0.5 gpm | 1 | 4,100 | 15 | $74 @ 0.3 gpm | 150° | 30 to 150 | 0.4 | 10 1/2" | 5 1/4" | 3" | 0000000 | 000000 | 0000000 | 00000 |
Portable Water Heater/Recirculators
Often used to recirculate hot water in process baths and sinks, these lightweight heater/recirculators boost water temperature on the go. An adjustable thermostat adjusts and maintains water temperature to within 0.25° F. For safety, these heater/recirculators should only be plugged into GFCI receptacles. The pump must be placed below the liquid source. Flow rate is not adjustable.
Estimated yearly energy cost is based on electricity cost of $0.12 per kWh. For more information, visit www.ftc.gov/energy.
Tube Connection Type | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. Control Range, °F | Max. Flow Rate, gpm | Wattage, W | Current, A | Estimated Yearly Energy Cost | NEMA Style | Inlet | Outlet | For Outlet Tube ID | Ht. | Wd. | Dp. | Weight, lbs. | Housing Material | Includes | Each | |
120V AC, Single | ||||||||||||||||
| 75° to 110° | 8.5 | 1,000 | 8.7 | $251 @ 9 gpm | 5-15 | Push On | Barbed | 5/8" | 7" | 9" | 17" | 13 | Stainless Steel | Two 6-ft. Long, 5/8" ID Water Hoses | 00000000 | 000000000 |
| 75° to 175° | 8.5 | 1,500 | 14 | $251 @ 9 gpm | 5-15 | Push On | Barbed | 1/2" | 7" | 9" | 17" | 15 | Stainless Steel | Two 6-ft. Long, 1/2" ID Water Hoses | 00000000 | 00000000 |
Flow-Through Heaters for Water
Also known as circulation heaters, these install directly into pipelines to quickly and efficiently heat liquid through direct contact. An adjustable thermostat automatically turns the heater on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the screw or dial.
Incoloy heating elements are more corrosion resistant than copper heating elements.
For technical drawings and 3-D models, click on a part number.
Heating Element | Temp. Control | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage, W | Watt Density, W/sq. in. | Current, A | Lg. | Wd. | No. of | Method | Range, °F | Pipe Size | Thread Type | Gender | Wire Connection Type | Each | |
Copper Heating Element with Bronze Body | |||||||||||||
120V AC, Single Phase | |||||||||||||
| 1,500 | 34 | 12.5 | 11 1/4" | 4" | 1 | Screw | 60° to 180° | 1 | NPT | Female | Screw Terminals | 0000000 | 000000000 |
| 2,000 | 47 | 16.7 | 11 3/4" | 4" | 1 | Screw | 60° to 180° | 1 | NPT | Female | Screw Terminals | 0000000 | 00000000 |
240V AC, Single Phase | |||||||||||||
| 3,000 | 51 | 12.5 | 16" | 4" | 1 | Screw | 60° to 180° | 1 | NPT | Female | Screw Terminals | 0000000 | 00000000 |
Incoloy Heating Element with Aluminum Body | |||||||||||||
480V AC, Three Phase | |||||||||||||
| 6,000 | 50 | 7.3 | 28 13/16" | 5 5/8" | 3 | Dial | 60° to 250° | 1 | NPT | Male | Wire Leads | 000000000 | 00000000 |
| 12,000 | 50 | 14.5 | 39 9/16" | 5 5/8" | 3 | Dial | 60° to 250° | 1 | NPT | Male | Wire Leads | 000000000 | 00000000 |
| 18,000 | 50 | 21.7 | 51 5/16" | 5 5/8" | 3 | Dial | 60° to 250° | 1 | NPT | Male | Wire Leads | 000000000 | 00000000 |
| 24,000 | 50 | 29 | 37 5/16" | 8" | 6 | Dial | 60° to 250° | 2 | NPT | Male | Wire Leads | 000000000 | 00000000 |
| 40,000 | 50 | 48 | 55 3/4" | 8" | 6 | Dial | 60° to 250° | 2 | NPT | Male | Wire Leads | 000000000 | 00000000 |
Flow-Through Heaters for Chemical Solutions
Also known as circulation heaters, these install directly into pipelines to quickly and efficiently heat liquid through direct contact. All are designed to heat chemical solutions at much higher watt densities than other immersion heaters without damaging the heating element. An adjustable thermostat automatically turns the heater on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the dial. Heaters automatically shut off at 202° F to prevent fire and heating element burnout. The heating element is titanium for excellent resistance to harsh chemicals.
For technical drawings and 3-D models, click on a part number.
Heating Element | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage, W | Watt Density, W/sq. in. | Current, A | Lg. | Wd. | Temp. Control Range, °F | Pipe Size | Thread Type | Gender | Electrical Connection Type | NEMA Style | Environmental Rating | For Use With | Each | |
Titanium Heating Element with 304 Stainless Steel Body | ||||||||||||||
120V AC, Single Phase | ||||||||||||||
| 1,500 | 42 | 12.5 | 15" | 5.7" | 90° to 190° | 1 1/2 | NPT | Female | Plug | 5-15 | NEMA 1 | Ammonium Hydroxide (0-3%), Ammonium Hydroxide (3-6%), Deionized Water, Salt Water, Water | 0000000 | 0000000 |
240V AC, Single Phase | ||||||||||||||
| 3,000 | 84 | 12.5 | 15" | 5.7" | 90° to 190° | 1 1/2 | NPT | Female | Hardwire | __ | NEMA 1 | Ammonium Hydroxide (0-3%), Ammonium Hydroxide (3-6%), Deionized Water, Salt Water, Water | 0000000 | 000000 |
| 4,000 | 112 | 16.7 | 15" | 5.7" | 90° to 190° | 1 1/2 | NPT | Female | Hardwire | __ | NEMA 1 | Ammonium Hydroxide (0-3%), Ammonium Hydroxide (3-6%), Deionized Water, Salt Water, Water | 0000000 | 000000 |
| 6,000 | 167 | 25 | 15" | 5.7" | 90° to 190° | 1 1/2 | NPT | Female | Hardwire | __ | NEMA 1 | Ammonium Hydroxide (0-3%), Ammonium Hydroxide (3-6%), Deionized Water, Salt Water, Water | 0000000 | 000000 |
Flow-Through Heaters for Coolant
Also known as circulation heaters, these install directly into pipelines to quickly and efficiently heat liquid through direct contact. To heat coolant without creating hot spots and damaging the heating element, they have a lower watt density than heaters for water or chemicals. An adjustable thermostat automatically turns the heater on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the dial.
For technical drawings and 3-D models, click on a part number.
Heating Element | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage, W | Watt Density, W/sq. in. | Current, A | Lg. | Wd. | No. of | Temp. Control Range, °F | Pipe Size | Thread Type | Gender | Wire Connection Type | For Use With | Each | |
Steel Heating Element with Steel Body | |||||||||||||
120V AC, Single Phase | |||||||||||||
| 500 | 17 | 4.2 | 8 3/8" | 4" | 1 | 150° to 560° | 1 | NPT | Female | Screw Terminals | Ethylene Glycol, Water | 0000000 | 000000000 |
| 750 | 17 | 6.3 | 13" | 4" | 1 | 150° to 560° | 1 | NPT | Female | Screw Terminals | Ethylene Glycol, Water | 0000000 | 00000000 |
240V AC, Single Phase | |||||||||||||
| 1,000 | 18 | 4.2 | 15 1/4" | 4" | 1 | 150° to 560° | 1 | NPT | Female | Screw Terminals | Ethylene Glycol, Water | 0000000 | 00000000 |