Fisoceny 2.5 Gallon Mini Tank Water Heater — Under Sink 1500W 120V, Stainless Steel, White

Compact hot water, big convenience

When space is at a premium, every detail matters. The Fisoceny 2.5 Gallon Mini Tank Water Heater is engineered to tuck under a kitchen sink, in an RV, or inside a small office cabinet, delivering reliable hot water on demand without crowding your living space. Built with a thick stainless steel tank and seamless welds, it exudes durability and a clean, leak-resistant profile that stays quiet while heating.

Speed and efficiency go hand in hand here. The 1500W L-shaped heating element expands the heated area inside the compact tank, helping water reach the target temperature within roughly 5–8 minutes. That means you can turn on the tap and expect hot water sooner, with less waiting compared to traditional setups in tight spaces.

Smart fit for tight spaces

With dimensions near 11.34 inches tall, 11.34 inches long, and 10.24 inches wide, this mini heater adapts to narrow corners. It can be wall-mounted or floor-mounted, making it a flexible choice for under-sink installations, RV kitchens, camping rigs, trailers, or compact office kitchens.

Easy installation and simple operation

The kit includes two 1/2" FIP stainless steel pipes, a pressure relief valve, and a transparent drain line, so you can get set up without hunting for extra parts. A mechanical knob lets you fine-tune water temperature between 86°F and 149°F for comfortable, on-demand hot water.

Safety, durability, and UL certification

A thickened 304 stainless steel tank and seamless welding support long-term reliability and leak resistance. Built-in protections include overheating, anti-dry burning, and high-pressure safeguards, complemented by UL certification. Responsive after-sales support is available to help with questions or concerns.

Energy awareness and insulation

Designed for efficient on-demand use, the heater offers high heating efficiency up to 95% and integrates an intelligent temperature control that switches to insulation mode when the target temperature is reached. The polyurethane foam insulation reduces heat loss, helping heat stay in the tank for longer periods—up to about 48 hours under ideal conditions.

Real-world benefits for daily use

Ideal for compact kitchens, RVs, and small offices, it delivers hot water closer to the point of use, which can reduce water waste and shorten wait times. Users may appreciate faster hot water for handwashing, dish rinsing, or quick cleanup in spaces where every inch matters.

What’s included and core benefits at a glance

• 2x 1/2" FIP stainless steel water pipes for quick hookup
• 1x pressure relief valve for safety
• 1x transparent water drain pipe for easy inspection
• Mechanical temperature control for precise tuning

• Fast heat-up in minutes
• Space-saving footprint for tight areas
• Durable stainless steel tank with leak resistance
• Flexible placement options for home, RVs, or offices
• On-demand hot water without long waits