---
product_id: 245353442
title: "Electric Mini Tank Water Heater UL Listed, ThermoMate 2.5 Gallons Small Under Sink Water Heater for Point of Use Instant Hot Water 110V 120V, Wall or Floor Mounted, ES250"
brand: "thermomate"
price: "€ 265.33"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/245353442-electric-mini-tank-water-heater-ul-listed-thermomate-2-5
store_origin: IE
region: Ireland
---

# 1440W ultra-fast heating Compact 12.95" x 12.95" footprint UL certified safety & corrosion resistance Electric Mini Tank Water Heater UL Listed, ThermoMate 2.5 Gallons Small Under Sink Water Heater for Point of Use Instant Hot Water 110V 120V, Wall or Floor Mounted, ES250

**Brand:** thermomate
**Price:** € 265.33
**Availability:** ✅ In Stock

## Summary

> 🔥 Instant warmth, engineered for your fast-paced life!

## Quick Answers

- **What is this?** Electric Mini Tank Water Heater UL Listed, ThermoMate 2.5 Gallons Small Under Sink Water Heater for Point of Use Instant Hot Water 110V 120V, Wall or Floor Mounted, ES250 by thermomate
- **How much does it cost?** € 265.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/245353442-electric-mini-tank-water-heater-ul-listed-thermomate-2-5)

## Best For

- thermomate enthusiasts

## Why This Product

- Trusted thermomate brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety You Can Trust:** UL listed with ASME, ANSI, and CSA-approved T&P valve ensures protection from pressure and temperature spikes.
- • **Sleek, Space-Savvy Design:** Compact, plug-and-play unit mounts easily under sinks or counters—perfect for modern kitchens, RVs, and workspaces.
- • **Energy-Smart Heating Element:** Incoloy 800 stainless steel delivers 99% heating efficiency and 4x corrosion resistance over copper.
- • **Instant Hot Water, Zero Wait:** 2.5 gallons capacity with rapid recovery for on-demand warmth—never wait again.
- • **Built to Last, Built to Perform:** Triple-layer tank with porcelain enamel lining and thick anode rod for unbeatable corrosion resistance.

## Overview

The ThermoMate ES250 is a UL-listed, 2.5-gallon electric mini tank water heater delivering instant hot water with 1440W power and 99% heating efficiency. Its triple-layer corrosion-resistant tank and Incoloy 800 heating element ensure durability and energy savings. Compact and versatile, it mounts easily under sinks or counters, making it ideal for kitchens, bathrooms, RVs, and more, backed by a 3-year tank warranty.

## Description

Full description not available

## Features

- 【No Wait for Hot Water】- 2.5 gallons water heater provides instant hot water on demand with fast recovery, 1440W 120V Plug in to use. Adjustable temperature range from 50°F to 149°F. 50% increase in thermal insulation with 30mm thick overall CFC-Free polyurethane to keep the warmth of hot water for longer time
- 【Long Lasting Constructed】 - 10,000 times impulse test, 3-layer tank with fused porcelain enamel glass lining, efficiently against corrosion, rust, and leaks, avoiding scale buildup. Extra thick anode rod sustaining high heating efficiency for a long time
- 【Incoloy 800 Stainless Steel Heating Element】- 4 times resistant to corrosion, better corrosion resistance performance and more efficient than copper under high temperature & pressure conditions, heating efficiency up to 99%, thus has a longer life span and energy saving
- 【UL Listed Safety Protection】- thermomate tank water heater was UL certified, including an ASME, ANSl and CSA (AGA) approved T&P valve to protect water heaters from excess pressures and temperatures
- 【Easy Installations】- compact small water heater, can be wall or floor mounted under sink / counter / cabinet, 1/2" NPT water connection, plug into a standard 120V outlet. An ideal hot water heater for kitchen & bathroom sink, RV & boat, vacation cabin & camper, food truck, garage & barn, shop & salon
- 【Specifications and Warranty】- Dimensions: 12.95"H x 12.95"W x 11.5"D; Weight: 15.4 lbs; Electrical requirements: 1440W at 120 volts, plug-in connection with 2 feet power cord; Max water pressure: 150PSI; Nominal current: 12A. 3-year Limited Warranty for the tank, 1-year warranty for parts and 24hours customer service

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | thermomate |
| Product Dimensions | 12.95"W x 16.49"H |
| Special Feature | Corrosion resistant tank, UL Certified |
| Color | White |
| Wattage | 1440.00 |
| Voltage | 120 Volts |
| Maximum Temperature | 149 Degrees Fahrenheit |
| Heat Output | 1440 Watts |
| Efficiency | 99% |
| Style | 2.5 Gallon |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Mounting Type | Protruding |
| Is Electric | Yes |
| Manufacturer | thermomate |
| UPC | 630792538926 |
| Part Number | ES |
| Item Weight | 15.4 pounds |
| Item model number | ES |
| Size | 2.5 Gallon |
| Amperage Capacity | 12 Amps |
| Maximum Power | 1440 Watts |
| Installation Method | Wall-Mounted or Floor |
| Item Package Quantity | 1 |
| Temperature Range | 50-149 Degrees Fahrenheit |
| Certification | UL |
| Special Features | Corrosion resistant tank, UL Certified |
| Included Components | T&P relief Valve, Mounting Kits and User Manual |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** thermomate
- **Capacity:** 2.5 Gallons
- **Power Source:** Corded Electric
- **Product Dimensions:** 12.95"W x 16.49"H
- **Special Feature:** Corrosion resistant tank, UL Certified

## Images

![Electric Mini Tank Water Heater UL Listed, ThermoMate 2.5 Gallons Small Under Sink Water Heater for Point of Use Instant Hot Water 110V 120V, Wall or Floor Mounted, ES250 - Image 1](https://m.media-amazon.com/images/I/61VnJKRWmtL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: How Do Point-of-Use Electric Mini-Tank Water Heaters Work?**
A: The unit connects directly to a cold water source, which fills the tank and is heated with an electric heating element to the desired temperature until it's ready to be used. The water is released when a faucet or fixture is opened.

**Q: What applications are point-of-use electric water heaters best for?**
A: Designed for single applications and small load requirements, these water heaters are commonly located under sinks, in small apartments, and in additions like side rooms and garages.

**Q: What type of point-of-use electric water heater should I buy?**
A: Mini-tank water heaters preheat a small amount of reserved water until it's ready to be used. Tankless water heaters heat water on demand as it travels through electrical heating elements within the unit.

**Q: What will happen if I connected this water heater to my hot water line?**
A: The cold water in the line will flow into the tank first and mix with the hot water there. The mini tank water heater will turn on heating until the hot water from your main water heater eventually reaches the mini tank

**Q: Can this mini tank water heater be used for shower?**
A: A mini-tank water heater is not intended to service a shower because it requires a larger flow from 1.5gpm to 2.5gpm, while these mini tank capacity range from 1.3 gallons, 2.5 gallons and 4 gallons, to max 6.5 gallons.

## Frequently Bought Together

- Electric Mini Tank Water Heater UL Listed, thermomate 2.5 Gallons Small Under Sink Water Heater for Point of Use Instant Hot Water 110V 120V, Wall or Floor Mounted, ES250
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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-01*