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iHeat HSMT2.5 2.5 Gallon Mini-Tank Electric Water Heater, 12 amp 110v

Original price $179.95 - Original price $184.90
Original price
$179.95 - $184.90
Current price $179.95


iHeat logo2.5 gallon mini-tank water heater, perfect for point-of-use, booster, boats and RVs that are limited to 120v and less than 15 amps.

The iHeat Mini Tank is lightweight and compact, and has a plug for a standard 110/120 volt outlet.

With this minitank, like any tankless water heater, you can save water by eliminating the wait for hot water to reach your faucet. Just connect to the water line and install the heater under the sink.

If you wish to eliminate the wait for hot water but need more volume than this tank's 2.5 gallon capacity, consider installing the heater in-line with a larger hot water source, such as a tankless heater or a larger storage tank heater. For example:

Waiwela WM-2.5: 2.5 Gallon Mini Tank Electric Water Heater

Two application examples

ETL certifiedFeatures

• Floor or wall mount
• Install at point-of-use
• Under sink installation
• T&P (Temperature & Pressure) pressure release safety valve included
• Attached 42-inch appliance power cord with two-prong plug
• Adjustable thermostat with overheat protection
• Single weld line on tank
• CFC free insulation
• Glass-lined tank
• Enameled water inlet and outlet
• ETL certified to UL 499 standard


• 120V, 60Hz, 1440W, 12 Amps
• Tank capacity: 2.5 gallons (10 liters)
• Height: 15.9 inches
• Width: 10.9 inches
• Depth: 10.7 inches
• Net Weight: 17.1 pounds (7.8 kg)
• Maximum rated pressure: 150 psi
• Tank recovery rate: The HSMT2.5 has a 2.5 gallon capacity. At 6.5 gallons per hour, in 23 minutes the unit will heat 2.5 gallons from 50°F to the unit's maximum temp of 140°F.

Spec Sheet Download


• Under sink
• Boat
• RV
• Food truck
• Booster at the point of use that is a long way away from the main water heater


• 1 Year warranty

Installation warning

Do not connect to higher or lower voltage than the specified 110-120V AC. Doing so will damage this unit and void the warranty.

Frequently Asked Questions ("FAQ")

Q1: What are the temperature settings on the dial?
A1: The lowest setting is a freeze protection setting of 50°F. The Max setting is 140°F. Settings in between have no exact temperature.

Q2: How long before the hot water runs out?
A2: We answer this question in our article about mini-tanks. Scroll halfway down on the article.