---
product_id: 20354826
title: "BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted"
brand: "bosch"
price: "4195 Lei"
currency: RON
in_stock: true
reviews_count: 10
category: "Bosch"
url: https://www.desertcart.ro/products/20354826-bosch-electric-mini-tank-water-heater-tronic-3000-t-2
store_origin: RO
region: Romania
---

# 1440W fast heating power 2.5-gallon capacity for point-of-use Compact 13.75" x 13.75" x 10.75" size BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

**Brand:** bosch
**Price:** 4195 Lei
**Availability:** ✅ In Stock

## Summary

> 🔥 Hot water, no wait—upgrade your space with Bosch brilliance!

## Quick Answers

- **What is this?** BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted by bosch
- **How much does it cost?** 4195 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/20354826-bosch-electric-mini-tank-water-heater-tronic-3000-t-2)

## Best For

- bosch enthusiasts

## Why This Product

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

## Key Features

- • **Energy-Smart Efficiency:** 98% thermal efficiency means less energy wasted, more savings in your pocket.
- • **Plug & Play Installation:** 36-37" power cord plugs into any 120V outlet for hassle-free, independent setup.
- • **Sleek & Space-Savvy Design:** Compact mini-tank fits discreetly under sinks or on walls, blending seamlessly with your modern space.
- • **Instant Hot Water, Zero Wait:** Get hot water in seconds—no more wasting time or water.
- • **Built to Last with Premium Glass-Lined Tank:** Durable, corrosion-resistant tank ensures years of reliable hot water on demand.

## Overview

The Bosch Tronic 3000 T ES2.5 is a 2.5-gallon electric mini-tank water heater designed for point-of-use convenience. With a compact footprint and 1440W power, it delivers hot water rapidly with 98% thermal efficiency. Its premium glass-lined tank ensures durability, while versatile mounting options and a plug-in 120V power cord make installation effortless. Ideal for eliminating long waits for hot water at sinks, it supports up to two fixtures simultaneously and blends seamlessly into any modern home or office environment.

## Description

Product Description Get hot water where it's needed, when it's needed with the Bosch ES2.5 Tronic 3000 T Electric Water Heater. This 2.5-gallon capacity point-of-use mini-tank fits right under your sink and provides a practical and effective solution to your hot water needs. This smaller model can be plugged right into a 120-volt outlet with the 36-37" cord, or can be installed in-line with a larger hot water source to provide "on-demand" use. The glass-lined tank offers great insulation and added durability, while the heater's fast recovery rate eliminates long waits for hot water. An external dial allows you to easily control the temperature range, and the temperature-and-pressure relief valve enhances your safety. The ES2.5 Tronic 3000 T from Bosch has a sleek and attractive exterior design that blends in seamlessly with existing décor when installed in a visible location, making this heater a great option in any room. Troubleshoot: (1) Water does not get hot- * Make sure the power supply is on and working * If the indicator light works properly but temperature does not get hot at the tap, test for a plumbing crossover; shut off cold supply to heater and open hot water tap. There should be no water flowing. Any continued flow indicates a crossover which will effect the temperature and will need to be corrected * Call a qualified service technician to test the resistance of the heating element (8-10 ohms). Heating element should be replaced if readings are outside these values (2) Leaking- * Check water fittings and T & P fitting on top of tank * Remove front cover and inspect heating element gasket * If tank is leaking call Bosch Water Heating for warranty claim if still within warranty period * Check anode rod. Other troubleshoot solutions are available on the installation manual Pg-11. Manufacturer Contact Information 800-283-3787

Review: Great product Easy install - So far it’s working great, I mounted it in the crawl space under the kitchen sink and put it inline with the hot water pipe that feeds the kitchen sink. No more wasting water during a long wait for the hot water to get there. I timed it and I’m now getting hot water in 6 seconds. This is the 4 gallon but the 2.5 would probably have been big enough. I added a PVC pipe to the release valve on top and a plastic tub underneath just in case the pressure valve ever does a release.
Review: Good product - More than a year using this product and I am convinced that it is the best I have ever had. He has not given me any problems and my food. Trock is still running at 100%, it really is wonderful. I am loving him. Maybe it takes a long time to do this review. But believe me, this is the most real review you will find about this product.

## Features

- CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
- LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
- INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
- FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
- EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
- Wattage: 1440.00 W

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0148O658Y |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #13,597 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Water Heaters |
| Brand | Bosch |
| Color | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (11,195) |
| Date First Available | August 7, 2015 |
| Efficiency | 98% |
| Global Trade Identification Number | 00052575049960 |
| Included Components | Rough Plumbing;Parts and Repair;water-heaters |
| Is Discontinued By Manufacturer | No |
| Is Electric | Yes |
| Item Depth | 10.75 |
| Item Package Quantity | 1 |
| Item Weight | 15.5 pounds |
| Item model number | 7738004996 |
| Manufacturer | Bosch Thermotechnology Corporation |
| Maximum Temperature | 140 Degrees Fahrenheit |
| Mounting Type | Wall |
| Part Number | 7738004996 |
| Pattern | Water Heater |
| Product Dimensions | 13.75"W x 13.75"H |
| Size | 2.5 Gallon |
| Special Feature | Lightweight |
| Special Features | Lightweight |
| Style | Water Heater |
| UPC | 052575049960 |
| Warranty Description | 1 year warranty on the parts for your convenience |
| Wattage | 1440 watts |

## Product Details

- **Brand:** Bosch
- **Capacity:** 2.5 Gallons
- **Power Source:** ac
- **Product Dimensions:** 13.75"W x 13.75"H
- **Special Feature:** Lightweight

## Images

![BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted - Image 1](https://m.media-amazon.com/images/I/615tg4J4n6L.jpg)

## Questions & Answers

**Q: When this heater is connected to the hot water line, what happens with the cold water that was sitting in the pipes?**
A: The cold water in the line is UPstream of the heater. It mixes with the hot water in the tank which means the hot water at the faucet will eventually start dropping. Before that happens, one of two things should happen. The heater in this unit will kick on to compensate and/or, the hot water from your main tank will get to this heater and flow thru with little discernable drop in supplied water temp.

**Q: Can be used "in-line with a large hot water source"?  Would it help a large bathtub that runs out of hot water before it gets full from main tank?**
A: If your bathtub is bigger than your main heater tank, this unit isn't going to do much for you. It will add 2.5, 4, or 7 gallons to the capacity of your main tank, depending on which Bosch unit you buy. The 7 gallon unit requires a specially wired circuit. You will also get a little bit of lukewarm water that was in the line between your main heater and the Bosch unit. Unless your main tank is awfully small and your bathtub massive, the 4 gallon unit should work for you. Maybe a demand type thankless heater in your bathtub hot water feed would be a better choice, but be careful to size it properly for your desired flow rate and temperature rise. Also a tankless is likely to require special wiring.

**Q: would this be able to supply a shower?**
A: A standard flow shower head is around 2.5 gallons per minute.  A low flow head is around  1.5 gallons per minute. The recovery rate for a 90 degree temperature rise is 6.8 gallons per hour!  So even the 7.5 gallon unit would only provide 4 minutes of shower time before the temp dropped off dramatically.  (even at the low flow rate..)

**Q: Is it necessary to connect an expansion tank to this heater (for safety purposes)? It states something to that effect in the user manual??**
A: If your building already has another water heater with an expansion tank on the same cold water lines, then you do not need a second expansion tank. Most houses today have a back flow preventive valve at the entry to the house. If that is the case (and it should be!), you will need a small expansion tank - the smallest one made should be enough. For the low price and easy installation, why not do it right? If this is to be used in an RV that does not have a back flow preventor, then no expansion tank would be needed (a rubber feed hose/line to the RV would also act as sort of an expansion feature if the spigot has back flow prevention).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product Easy install
*by K***S on September 12, 2025*

So far it’s working great, I mounted it in the crawl space under the kitchen sink and put it inline with the hot water pipe that feeds the kitchen sink. No more wasting water during a long wait for the hot water to get there. I timed it and I’m now getting hot water in 6 seconds. This is the 4 gallon but the 2.5 would probably have been big enough. I added a PVC pipe to the release valve on top and a plastic tub underneath just in case the pressure valve ever does a release.

### ⭐⭐⭐⭐⭐ Good product
*by C***A on January 10, 2026*

More than a year using this product and I am convinced that it is the best I have ever had. He has not given me any problems and my food. Trock is still running at 100%, it really is wonderful. I am loving him. Maybe it takes a long time to do this review. But believe me, this is the most real review you will find about this product.

### ⭐⭐⭐⭐⭐ Great Improvement To My Kitchen. Just Be Sure To Check The Size
*by C***2 on March 18, 2022*

This 4 gallon mini-tank heater is perfect for my kitchen. The total cost for the tank and the installation was about $325.00—higher in my case because the tank did not quite fit under the sink and I had to move it to a cabinet 6 feet away, on the other side of the dishwasher. This added the cost of two 6 foot hoses, two brass connectors, and a 12 guage extension cord. The normal cost would be under $300. I opted to abandon the hot water at the sink and run only cold water into the mini-tank. This way, running hot water in the sink never impacts my gas water heater. The downside is that I can run out of hot water at the sink, if I use too much at once, but the upside is that it saves a lot more energy and water. By turning up the temperature on the Bosch to ¾, I have eliminated the chance of running out for my own needs. My sink is located about 30 feet from my water heater, which is actually more like 40’ of piping. It was taking a good 30 seconds to get hot water every time, and I started collecting the 2 gallons of wasted cold water for my outdoor garden. Now the hot is basically instant. Because of the unusual 6’ distance, it takes one second to get hot water. If it were under the sink it would be quicker. Installation was quite easy. Even with this less desirable location, the hoses and extension cord passed easily behind the dishwasher. I did it myself, no plumber or electrician required. Why not get a demand water heater for the kitchen sink? Money. Any demand water heater you buy will require a new, dedicated electrical line with a dedicated breaker. This will easily cost you $1500 or more for the electrician to install it. A demand water heater retrofit really only makes sense if you are replacing your main water heater, and in my case, I would STILL want my mini-tank, because the distance problem would not be solved. It would make some sense to have a demand water heater installed at the sink for NEW HOME construction, but the retrofit is far too expensive to justify. Now that I have converted my sink hot water usage from gas to electric, I can start working on converting to solar. Get this mini-tank. It will save you water and energy, even if you connect it to the hot water line. What you will need for a standard, under-the-sink installation: 2 ½”npt to 3/8” compression hoses, 2’ long 1 3/8” compression tee 1 3/8” female to female connector (male on both ends) Aluminum water heater pan You will use the connector to connect the 2’long 3/8” hose to the hot water hose for the sink tap. For my installation, I used the following: 2 ½” npt to 3/8” compression hoses, 1’ long 2 3/8” dishwasher supply hoses, 6’ long 3 3/8” female to female connectors, two to connect the 1’ hoses to the 6’ hoses, 1 3/8” compression tee 1 12 gauge extension cord, 8’ long Aluminum water heater pan Depending on your kitchen and location, you may want to plumb a PVC pipe into the over-pressure valve and either to a floor drain or to the outside. My kitchen has waterproof tile floors, so I can take a chance on an overflow filling the drain pan and spilling out onto the kitchen floor. I can just mop it up. I connected the 6’ DW supply hoses to the 1’ hoses. It was the easiest way to get the long 3/8” compression hoses to connect to the ½” npt connections at the water heater. Oh also, you need a good flashlight or headlamp, and a couple of pairs of adjustable spanners (small crescent wrenches). Note: Technically, you will need an electrician to install the 7 gallon version, but it does not require a new or dedicated circuit, as it still only pulls 12 amps. If you are comfortable connecting the electrical line into your existing box, you will be OK. Add a little cost for connectors or possibly a larger electrical box. In some municipalities, you may need a permit and inspection because this may qualify as adding an electrical circuit. The 7 gallon would be nice, but it also takes longer for the tank to heat and takes up more room. All good products though. I updated this on 3/19/2022 to correct some typos.

## Frequently Bought Together

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-22*