yoisie Immersion Water Heater 1800W — Portable 120V Tub & Pool Heater

The yoisie Immersion Water Heater is a portable 1800W, 120V heating element that drops straight into a container of water and warms it up. There is no plumbing involved and no tools needed: submerge the element, set the controller beside the container, and plug it in. It works in bathtubs, hot tubs, buckets, inflatable pools and livestock tanks.

Temperature control

The controller shows a live temperature reading and lets you set a target. The sensing probe sits near the heating tube, so the reading reflects the water around the element. When the setpoint is reached the heater pauses, and it starts again once the temperature drops roughly 15°F. Maximum setting is around 175°F. Because the reading is taken close to the element, unplug the heater, stir the water and check it by hand before getting in.

Build

• 304-grade stainless steel heating rod resists corrosion
• Reinforced 6.6 ft power cord
• Moisture-sealed circuit board in the controller
• Detachable anti-scald guard around the element
• Automatic shut-off and dry-burn protection

The anti-scald guard keeps the hot element away from skin while letting water circulate, and it comes off for cleaning. Dry-burn protection shuts the heater down if it ends up running without enough water around it.

Practical notes

How fast it heats depends on the starting temperature and how much water you have; a bucket warms far faster than a tub. 1800W is close to the most a standard household circuit can supply, so plug it into an outlet with nothing else heavy running on the same circuit, and keep the controller on a dry surface.

Safety: always unplug the heater before putting hands in the water or removing the element.