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Under-Sink Instant Boiling Water System
5.0
✔️ Near-Boiling Water in Seconds (≥93°C)
✔️ Compact Under-Sink Design, Zero Countertop Clutter
✔️ 7 Liters of Hot Water Per Hour
✔️ 304 Food-Grade Stainless Steel Housing
✔️ Easy Under-Sink Installation
✔️ Optional Inline Filter Cartridge

Free shipping
On all orders

100% Risk free
30 days free trial

5 Year Warranty
On all orders
Reviews About WaterMart’s Under-Sink Boiler
Read reviews from WaterMart customers who rely on our countertop under-sink boiling water systems for healthier and better-quality drinking water every day.
— Jennifer
5.0
“We wanted an under-sink hot water dispenser that would save space and make hot water easier to access. This system fits neatly under the counter and has been very convenient for everyday kitchen use.”
— Daniel
5.0
“Our old setup took up too much space, so we switched to an under-sink instant hot water dispenser. The compact design works really well in our kitchen, and having hot water available at the tap is very convenient.”
— Michael
5.0
“We were specifically looking for an instant hot water heater under sink to avoid keeping a large appliance on the counter. The installation keeps everything neatly hidden underneath while giving us easy access to hot water.”
— Robert
5.0
“The instant boiling water tap has been a great addition to our kitchen. We use it regularly for tea, cooking, and other tasks where we previously had to wait for water to boil.”
— Luke
5.0
“We needed a commercial instant hot water dispenser for a busy kitchen environment. The under-counter design keeps the workspace clear and makes hot water much easier to access throughout the day.”
— Sarah
5.0
“I wanted an under-sink hot water heater that wouldn’t take up valuable counter space. This setup has been a much cleaner solution and works well for our daily hot-water needs.”
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Product Overview
Skip the kettle and the wait. The WaterMart Under-Sink Instant Boiler delivers near-boiling water at ≥93°C when you need it, making tea, coffee, instant meals, and baby formula prep more convenient. Its 1.5L insulated tank keeps hot water ready, while an output of up to 7 liters per hour helps meet everyday demand at home, in offices, and in busy commercial kitchens.
The compact unit installs neatly under your sink, keeping bulky equipment off your countertop while a sleek tap stays within easy reach. Its 304 food-grade stainless steel construction is designed to resist corrosion and maintain hygienic performance through daily use. An optional inline filter cartridge is also available for additional water purification.
With electric 420W operation and a dedicated hot-water tank, the boiler provides a convenient alternative to repeatedly boiling water in a kettle. Every unit is backed by a 5-year warranty for added peace of mind.
|
Features |
Details |
|
Type |
Instant Hot Water (Boiler) |
|
Hot Water Temperature |
≥93°C |
|
Hot Water Tank Capacity |
1.5 Liters |
|
Hot Water Output |
Up to 7 Liters/hour |
|
Power |
Electric, 420W |
|
Housing Material |
304 Stainless Steel |
|
Dimensions |
420 × 205 × 350 mm |
|
Installation |
Under-Sink |
|
Filter Cartridge |
Optional |
|
Warranty |
5 Years |
|
Application |
Home, Hotel, Restaurant, Office, Hospital |
What’s in the Box
Order your boiler from WaterMart, and here’s what you’ll receive with it:
- A Boiler
- Dedicated Hot-Water Faucet
- Water Connection Kit
- Power Cable
- Installation Guide
- Warranty Card

Why Choose Our Under-Sink Hot Water Boiler?

Keep Your Counter Clear
The compact under-sink design keeps the boiler out of sight, giving you more usable counter space and a cleaner kitchen or workspace.

Convenient for Busy Spaces
A dedicated hot-water system makes everyday tasks easier in homes, offices, hotels, restaurants, and other busy environments.

Add Filtration When You Need It
The optional inline filter cartridge gives you the flexibility to add extra water purification based on your needs.

Built for Long-Term Confidence
Durable construction and warranty coverage provide added peace of mind for everyday use.
Frequently Asked Questions
Check out the common questions we get below.














