Waiting for the kettle to boil or struggling with cold taps on winter mornings is frustrating. London homeowners and business owners are now upgrading to instant hot water systems that deliver boiling water within seconds straight from the tap or under the sink.
Whether you need hot water for tea, coffee, cooking, washing dishes, handwashing, or cleaning, an under sink instant hot water heater is the fastest, most energy-efficient solution. No more kettles, no more waiting, no unnecessary electricity use just instant hot water on demand.
What Is an Instant Hot Water System?
An instant hot water system is a compact electric heater or tap attachment that installs under the sink or directly on your kitchen or bathroom tap, delivering near-boiling water instantly. Unlike traditional boilers or kettles, it heats water only when needed, saving time and energy.
Best Types of Instant Hot Water Systems for London Homes & Businesses
Here are the most popular options available:
1. Under Sink Instant Hot Water Heater
A small unit fitted directly under your kitchen or bathroom sink. It connects to your existing tap and provides hot water within seconds. Perfect for daily use, especially for flats, offices, salons, and cafes where space is limited.
2. 3-in-1 Instant Hot Water Tap
A modern tap that delivers hot, cold, and boiling water from one spout. Stylish, safe, and highly efficient ideal for luxury kitchens or new renovations.
3. Commercial Instant Hot Water Dispenser
Designed for restaurants, offices, clinics, staff rooms, and commercial kitchens. It ensures continuous supply of instant hot water, even during high demand.
4. Instant Hot Water Bathroom Tap
Best for handwashing, shaving, and cleaning, this setup gives you warm water immediately, even if your main boiler is far from the bathroom.
5. Kitchen Instant Hot Water Systems
Specifically designed for cooking, cleaning, tea, coffee, pasta, baby bottles, and grease removal. A massive time-saver for busy households.
Why Londoners Are Switching to Instant Hot Water Systems
✔ Zero waiting hot water in 1-2 seconds
✔ Lower electricity bills no constant heating like kettles or boilers
✔ Compact fits neatly under the sink
✔ Safer than kettles no accidental spills or handling hot containers
✔ Stylish upgrade for modern kitchens and bathrooms
✔ Eco-friendly less water and energy waste
Where Can You Install Instant Hot Water?
| Area | Recommended System Type |
|---|---|
| Kitchen Sink | Under sink instant hot water heater / 3-in-1 tap |
| Bathroom Basin | Instant hot water bathroom tap |
| Office Pantry | Commercial instant hot water dispenser |
| Café / Restaurant | High-capacity dispenser |
| Utility Room / Garage | Under the sink instant hot water unit |
Installation – Is It Complicated?
Most systems are easy to install and fit into existing plumbing setups.
- Under the sink instant hot water units take less than an hour to fit.
- 3-in-1 instant hot water taps may require a professional plumber to ensure proper pressure and safety.
- Commercial instant hot water dispensers are often plug-and-play.
If you’re upgrading your home or business in London, now is the best time to ditch outdated kettles and slow boilers.
Frequently Asked Questions
1. How much does an under sink instant hot water heater cost in London?
Prices start from £120 for basic models and go up to £500+ for high-end 3-in-1 instant hot water taps. Installation cost depends on plumbing setup but is usually affordable and one-time.
2. Does an instant hot water heater use a lot of electricity?
No. It only heats water when needed, making it more energy efficient than a kettle or a continuously running boiler.
3. Can I install it in a rented flat?
Yes. Most under the sink instant hot water heaters are removable, so you can take them with you when moving out.
4. Is instant hot water safe?
Modern systems include automatic temperature control, insulation, and child-safe features, making them safer than traditional kettles.
5. Can I use instant hot water under the sink for washing dishes?
Absolutely. Many people use instant hot water under sink setups for cleaning dishes, removing grease, and sanitizing kitchen tools.
Final Thoughts
If you live or work in London and still rely on a kettle or slow boiler, you’re wasting time, energy, and money daily. A compact instant hot water heater under the sink, or a 3-in-1 instant hot water tap, will transform your routine instantly.