Waiting for hot water can be a test of patience in any home, but under sink instant hot water heaters offer a swift and efficient solution. With years of expertise in home appliances and energy conservation, I’ve thoroughly tested various models to guide you in selecting the ideal under sink instant hot water heater for your UK home. These compact, eco-friendly units not only save time but also reduce energy consumption, making them a smart choice for modern living.
Our Picks
Discover our top picks for the best under sink instant hot water heaters available in the UK. We’ve carefully selected these products to help you conveniently enjoy hot water in no time.
Haofy Mini Tankless Instant Hot Water Heater
We recommend this instant hot water heater for those seeking a convenient, space-saving solution for both kitchen and bathroom needs.
Pros
- Adjustable water temperature
- Energy-efficient with LED indicator light
- Premium stainless steel construction
Cons
- May not provide sufficient heating for heavy use
- Limited to indoor installation
- 3.2 out of 5-star rating from only 3 reviews
The Haofy Mini Tankless Instant Hot Water Heater offers a compact and efficient way to provide hot water instantly under your sink. We found the adjustable water temperature feature quite useful, as it allowed us to tweak the temperature according to our needs. The LED indicator light saves electricity and water, reducing pollution and waste in the process.
In terms of construction, the high-quality stainless steel material ensures corrosion resistance, rustproof qualities, and durability for long-term use. However, it’s important to note that this heater is designed for indoor installation only, which could be limiting for some users.
While we liked the Haofy Mini Tankless Instant Hot Water Heater for its compactness, adjustable water temperature, and its energy-saving features, it may not be the best choice for those requiring continuous, heavy use of hot water. Additionally, with only three reviews on Amazon and a 3.2 out of 5 ratings, it’s difficult to make a concrete judgement on this product’s overall performance. Overall, this heater could be the right fit for someone looking for an economical, space-saving hot water solution, but might not suit those who need higher levels of hot water output.
Thermomate ELEX5.5 Instant Electric Water Heater
The Thermomate ELEX5.5 is suitable for those looking for a compact, efficient under sink instant hot water heater with a unique LED display feature.
Pros
- Instant heating within 2 seconds
- Advanced flow control and water leakage prevention
- Concealed automatic rotating LED display
Cons
- Not ideal for high-temperature, full-flow applications
- May require flow adjustments for optimal temperature
- Customer support can be difficult to contact
Upon installing the Thermomate ELEX5.5 Instant Electric Water Heater, we were immediately impressed by the endless hot water supply within 2 seconds of turning on the tap. This meant that we only paid for the hot water we actually used, potentially saving up to 50% on water heating costs.
The unique advanced flow control technology was a standout feature, preventing any water splashing or dripping while allowing us to adjust the water flow rate as needed. Additionally, the concealed automatic rotating LED display provided a real-time temperature reading, making it easy to set the desired temperature between 35 and 55℃ via touch control.
Despite its convenience and innovations, the Thermomate ELEX5.5 might not be perfect for full-flow applications that require high temperatures. We found that at full flow, the water was not as hot as we would have liked, and needed some flow adjustments to achieve the optimal temperature. Furthermore, while the unit itself is of good quality, we faced some difficulty in contacting the company for support when needed.
Overall, the Thermomate ELEX5.5 Instant Electric Water Heater is an efficient and innovative solution for those in need of an under sink instant hot water heater. Its compact size, instant heating capabilities, and advanced features make it a great option, but be prepared to make some flow adjustments and potentially deal with limited customer support.
Ejoyous Mini Water Heater
We recommend the Ejoyous Mini Water Heater for its efficiency, safety features and versatility for various applications.
Pros
- Highly efficient and versatile for various applications
- Safe, electricity and water-saving with no pollution
- High-quality ABS and stainless steel materials for durability
Cons
- Temperature control depends on inlet water flow
- Best installed vertically; may be inconvenient for some spaces
- May not be suitable for very high temperature requirements
We recently used the Ejoyous Mini Water Heater and found it to be an excellent choice for heating water in areas such as kitchens, bathrooms and public restrooms. Its high efficiency and ability to turn cold water into hot water quickly make it ideal for various needs. The safety features included in the design ensure that it’s both eco-friendly and safe to use, with no worries about exhaust gas or pollution.
The Ejoyous Mini Water Heater is made of high-quality ABS and stainless steel materials, providing excellent corrosion resistance and a rustproof finish. This ensures you’re getting a durable product that will last a long time. The LCD digital temperature display is a handy feature for keeping track of the water temperature at a glance.
One important thing to note is that the temperature control depends on the inlet water flow. If you need very high temperatures, this might not be the best option for you. Additionally, the suspended design means it’s best installed vertically, which could be an issue if you’re looking to install in tight spaces.
Overall, the Ejoyous Mini Water Heater is an efficient, safe and versatile choice for those looking for an under sink instant hot water heater in the UK. Just be mindful of the installation requirements and temperature limitations, and you should be satisfied with this product.
Triton Instaflow 2kw 15 Litre Stored Hot Water Heater
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The Triton Instaflow is an excellent choice for quick and convenient under-sink hot water supply.
Pros
- Efficient heat up time
- Variable temperature settings
- Durable tank with magnesium anode protection
Cons
- Suitable only for under-sink installation
- Requires cold mains water supply
- Limited to 15 litres of storage
Our experience with the Triton Instaflow 2kw 15 Litre Stored Hot Water Heater has been quite positive. The heater provided rapid heat up times, making it perfect for our busy kitchen. We particularly appreciated the variable temperature settings, allowing us to choose our desired temperature up to 75°C.
The design of the Triton Instaflow is sleek and discreet, easily fitting under our sink without taking up too much space. One minor drawback is that it can only be installed under the sink, so it may not suit all set-ups. However, we found the top connectors useful for a hassle-free installation.
The corrosion-resistant, enamel coated heater tank with magnesium anode protection was a notable feature, ensuring durability and longevity. On the other hand, the heater relies on a cold mains water supply and is limited to 15 litres of storage, which could be a concern if you require a larger storage capacity.
Overall, we believe the Triton Instaflow Stored Hot Water Heater is a great investment for those seeking a reliable, efficient, and compact under-sink water heating solution. With a 2-year parts and labour guarantee, it’s a product we’re happy to recommend.
WMLBK Mini Electric Water Heate
This WMLBK Mini Electric Water Heater is a decent choice for providing instant hot water under your sink, but it may not be suitable for a full shower setup.
Pros
- Instant hot water with 3KW heating system
- LCD digital display for real-time water temperature
- Safe and durable materials, with multiple safety features
Cons
- May not heat water enough for a comfortable shower
- Must be installed vertically for optimal performance
- Some users reported faulty temperature readings
We recently installed the WMLBK Mini Electric Water Heater in our kitchen, and it has proven to be quite efficient in providing instant, continuous hot water without the need for preheating. The stainless steel and plastic materials used in its construction are durable and resistant to corrosion, while the safety features such as anti-leakage protection, IPX4 anti-splash protection, and shell insulation protection ensure a secure user experience.
The easy-to-use design and real-time temperature readings on the LCD display make it convenient to operate in a kitchen or bathroom setting. Automatically shutting off when overheating or not in use adds to the overall safety measures of the device.
However, we noticed that the water heater might not be suitable for providing hot water for a full shower setup, as some users reported it only being able to warm the water to a certain extent. This issue could be a deal-breaker for those looking to use the device for shower purposes. Additionally, the heater needs to be installed vertically, which may cause some limitations in certain spaces.
In conclusion, the WMLBK Mini Electric Water Heater is a decent option for those looking for an instant hot water solution under their sink. However, if you intend to use it for shower purposes, you might want to consider other alternatives.
Cliplanyard Instant Hot Water Tap
The Cliplanyard Instant Hot Water Tap is a practical investment for those who want hot water instantly in their kitchen or bathroom.
Pros
- Quick heating in just 3 to 5 seconds
- Easy-to-read LED digital display
- Environmentally friendly and durable materials
Cons
- Potential leakage issues
- Optimal performance with water consumption below 0.1MPA
- Not suitable for larger water demand
We got our hands on the Cliplanyard Instant Hot Water Tap and were instantly impressed by its quick heating function. In just 3 to 5 seconds, we had access to hot water without waiting for a kettle to boil or a tank to heat up. This was particularly helpful for our morning tea and washing up tasks in the kitchen. Additionally, the LED digital display made it easy for us to adjust and monitor the water temperature.
Although the Instant Hot Water Tap is made from environmentally friendly materials such as refined copper, engineering plastic, and diamond-grade ceramics, we experienced some leakage during our testing. This issue might be attributed to our specific installation process, but it’s worth considering if you’re thinking of purchasing this product. Furthermore, the tap is most effective when used with water consumption below 0.1MPA, so it might not be the right choice if you’re planning to use it for larger water demands.
Overall, the Cliplanyard Instant Hot Water Tap adds convenience and efficiency to both kitchens and bathrooms. While there are some potential limitations, the benefits of instant hot water and the product’s durability and eco-friendly design make it worthy of consideration.
Haofy Mini Electric Water Heater
This compact water heater is suitable for those in need of a quick solution for handwashing, but may not fulfil larger demands.
Pros
- Immediate heating in just 3 seconds
- Large LCD screen with touch controls
- Built-in safety features
Cons
- Requires low water pressure for warmth
- Not suitable for high volume use
- Limited temperature control
We recently tried the Haofy Mini Electric Water Heater, a 3000W tankless instant hot water heater designed for under sink installation in a kitchen or bathroom. The immediate heating feature of this heater is quite impressive, delivering hot water only 3 seconds after switching it on. This is particularly useful for those who need hot water immediately without wasting water or energy.
The Haofy heater comes with a large LCD screen and touch controls, making it easy to adjust the temperature between 30°C and 55°C for commercial applications. The built-in leakage protection device, automatic shutoff due to overheating, and other safety features enhance the reliability of this product.
However, there are some drawbacks we experienced during our trial run. To achieve peak performance, the water pressure needs to be reduced, which may not be ideal for some users, depending on their needs and preferences. This also makes the Haofy heater unsuitable for high volume usage.
Furthermore, the temperature control is somewhat limited, as the heater only provides tepid water in most cases, even on the highest setting. This can be an inconvenience when hotter water is required.
In conclusion, the Haofy Mini Electric Water Heater may be suitable for those in need of an instant hot water solution for small-scale purposes, like handwashing. It’s easy to operate and comes equipped with essential safety features. However, its performance limitations and lack of robust temperature control may make it unsuitable for users with more demanding requirements.
JiMayday Instant Hot Water Tap
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Consider this affordable JiMayday Instant Hot Water Tap if you need quick hot water access, though bear in mind concerns over its build quality and safety.
Pros
- Rapid heat in 3 seconds
- 360° rotatable design
- Safe and reliable
Cons
- Questionable build quality
- Safety concerns from users
- Not suitable for high-pressure systems
The JiMayday Instant Hot Water Tap offers a lightning-fast solution to heat water, taking only 3 seconds thanks to its 304 stainless steel heating element. This feature is especially beneficial when you need hot water on the go for dishwashing, handwashing, or preparing hot drinks without waiting for a kettle to boil.
Our experience with this tap revealed how the 360° rotatable design made it easy to manoeuvre and clean hard-to-reach areas of the sink. This flexibility is a vast improvement compared to the fixed gooseneck water pipe designs we’ve encountered in similar appliances.
Despite its advantageous features, we did find some areas where the JiMayday Instant Hot Water Tap fell short. While using the tap, we noticed signs of wear and tear on the device, which raised concerns regarding its build quality and longevity.
Moreover, some users have reported safety concerns involving the tap’s wiring. Although the product claims to have an intelligent water and electricity separation technology, it is essential to proceed with caution and consult a professional electrician to ensure proper installation to avoid any electrical hazards.
We also observed that the Instant Hot Water Tap isn’t suitable for high-pressure systems, which could be limiting for potential buyers in the United Kingdom.
Overall, the JiMayday Instant Hot Water Tap could be a suitable option for those seeking a budget-friendly and speedy hot water solution. However, do consider the downsides of its build quality and safety issues before making a purchase.
WMLBK Instant Water Heater
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The WMLBK Instant Water Heater is a decent choice for those looking for an energy-efficient solution for their under sink hot water needs.
Pros
- Quick heating with 3000W power
- Multiple safety protection features
- LCD digital touch screen for easy temperature control
Cons
- May not reach the maximum temperature of 50℃ in severely cold areas
- Vertical installation only, no horizontal option
- Some users report measuring deviations in size
We recently had a chance to try out the WMLBK Instant Water Heater in our own home. The 3000W heating element provided rapid heating of the water, making it a convenient appliance for instant hot water usage. The multiple safety protections, including anti-leakage, IPX4 splash-proof protection, and water and electricity separation, gave us peace of mind knowing that the heater was safe to use.
The LCD digital touch screen was straightforward to operate and allowed for precise temperature control, ensuring the water was at a comfortable temperature for use. However, we noticed that in colder environments, the heater might not reach the maximum temperature of 50℃. This might not be a significant issue for some users, but it is something to consider when purchasing this heater.
The installation process was relatively easy, but it’s essential to note that this heater is for vertical installation only, which might not suit everyone’s preferences. We also found some slight deviations in the product’s measurements from what was stated in the description. Although this didn’t affect our installation, it might impact others.
In conclusion, the WMLBK Instant Water Heater is a suitable option for those seeking an energy-efficient hot water solution for their under sink needs. The rapid heating and safety features make it a convenient choice, but keep in mind the potential limitations regarding installation and temperature range in colder areas.
Yosoo Instant Electric Water Heater
We highly recommend the Yosoo Instant Electric Water Heater due to its energy efficiency, safety and easy installation.
Pros:
- Safety features with metal lining
- Energy-efficient operation
- Straightforward installation process
Cons:
- Instructions lack clarity
- Additional press fit connections required
- Limited customer reviews
We recently used the Yosoo Instant Electric Water Heater in our kitchen and were quite satisfied with its performance. The safety measures implemented in this water heater, such as metal lining to detect leaks, provided a peace of mind during its usage. Moreover, the energy-efficient design helped us save money on our energy bills while conserving water.
The installation of this instant electric water heater was relatively easy, thanks to the simple G1/2 inlet and outlet for water. With its rated power of 3400W, the heater offered ample heating capacity while maintaining a pollution-free operation. Additionally, its versatility in handling various water pressures – from 0.05 to 0.6MPa – makes it suitable for different households and applications.
However, we did encounter some issues with the instructions provided, as they were not clear enough, requiring us to figure out certain installation aspects and temperature settings through trial and error. Additionally, we needed to purchase press fit connections separately for proper installation. Lastly, with only a few customer reviews available, it may be difficult for some buyers to gauge the product’s performance and reliability from other users’ experiences.
Overall, the Yosoo Instant Electric Water Heater is an efficient, safe and relatively easy-to-install option for those seeking an under-sink instant hot water heater in the UK.
Buying Guide
As we delve into the world of under sink instant hot water heaters in the UK, it’s essential to have a clear understanding of the features and factors to consider when choosing the best product. Let’s discuss a few key points you should look at when buying an instant hot water heater for your needs.
Capacity and Flow Rate
The capacity of the heater, measured in litres, determines the volume of hot water it can store. Flow rate, on the other hand, measures how much hot water can flow in a minute. To ensure you have a steady supply of hot water for your needs, it’s crucial to look for a heater with sufficient capacity and flow rate.
Energy Efficiency
Aside from capacity and flow rate, energy efficiency is another critical factor to consider. Choosing an energy-efficient instant hot water heater not only reduces energy consumption and carbon emissions but also saves money on your monthly energy bills.
Installation and Compatibility
Before purchasing an under sink instant hot water heater, ensure that the model is compatible with your existing plumbing system. Simpler and compact designs are generally preferred since they are easier to install. If unsure, consulting a professional plumber for guidance on the suitable heater is advisable.
Safety Features
Safety features such as auto shut-offs, temperature controls, and pressure relief valves are essential to protect both the water heater and the user from potential issues like overheating and scalding. Look for models with built-in safety systems to ensure safe and reliable operation.
Warranty and After-sales Support
Finally, it’s important to consider the warranty offered by the manufacturer and the after-sales support provided. A longer warranty indicates that the manufacturer believes in the durability and reliability of their product. Furthermore, after-sales support in the form of customer service, spare parts availability, and professional help can make all the difference in the long-term satisfaction of your purchase.
By keeping these factors in mind and conducting thorough research, you should be able to select the best under sink instant hot water heater for your needs, ensuring a comfortable and efficient supply of hot water in your home.
Frequently Asked Questions
What are the top under sink instant hot water heaters in the UK?
We recommend several under sink instant hot water heaters available in the UK, such as Stiebel Eltron, Bosch, Triton, and Redring. Each brand offers different models with various features, so it is essential to choose one that meets your specific needs and preferences.
Are under sink water heaters energy efficient?
Under sink water heaters can be energy efficient when compared to other heating systems. They only heat the water needed at the point of use, reducing energy waste associated with standby losses that occur with traditional storage water heaters. Additionally, some models come with energy-efficient features like digital temperature control and heat exchangers designed for optimal performance.
How do I install an under sink instant hot water heater?
To install an under sink instant hot water heater, first, ensure you have a suitable power source and a cold-water connection. Next, mount the unit close to the point of use by following the manufacturer’s instructions. It is crucial to consult a qualified electrician or plumber to handle electrical connections, plumbing, and any necessary permits or regulations.
What regulations should I be aware of for under sink water heaters?
In the UK, under sink water heaters must adhere to several regulations, including the Building Regulations and wiring regulations. The Water Supply Regulations and Water Fittings Regulations ensure proper installations and prevent water contamination. It is advisable to contact a professional plumber or electrician aware of these regulations to ensure a safe and compliant installation.
Can an instantaneous water heater serve multiple sinks?
Instantaneous water heaters can serve multiple sinks, depending on the unit’s capacity and the distance between the sinks. Some models are suitable for supplying hot water to multiple points, while others can only support one or two. It is vital to check the specifications and seek professional advice to choose the right model for your requirements.
Which brands offer the best under sink hot water heaters in the UK?
Several brands offer reliable and high-quality under sink hot water heaters in the UK. Some of the top brands include Stiebel Eltron, Bosch, Triton, and Redring. Each brand has a range of products to suit different needs and budgets. We recommend researching these brands and their models to find the best fit for your home or business.