Top 10 Tankless Water Heater UK – Water Heaters & Parts

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1. Horstmann


Horstmann Electronic 7 Water Heater, Multi

Horstmann #ad - Horstmann electronic 7 immersion Heater Controller Economy 7. Automatic clock adjusts to accommodate GMT/BST summer/winter time. For control of "off peak" type water heater installations.
BrandHorstmann #ad
ManufacturerHorstmann #ad
Part NumberElectronic 7
ModelElectronic 7

2. Stiebel Eltron


20.2, Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, Eco, On Demand Hot Water, White

Stiebel Eltron #ad - Savings monitor even shows how much you save on energy costs. Our 7-year leakage and 3-Year Parts Warranties are included with purchase. Warranties included – stiebel eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability.

Hot showers will never be interrupted again. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels. It’ll reduce flow slightly if hot water demand exceeds capacity. Space & energy saver – its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required.

Continuous flow – advanced flow control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. Tempra 24 plus – this specific model is 24kw, 240v, requires a min recommended electric service of 150 A, and offers an output water temperature of 68° to 140°F. Easy operation – electronic switch activates the hot water heater and it’s noise free while in use. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow.
BrandStiebel Eltron #ad
ManufacturerStiebel Eltron #ad
Part Number239222

3. Kelaro


Kelaro Tankless Water Heater Flushing Kit with Flow-Aide Biodegradable Descaler

Kelaro #ad - Works with rheem, atmor, rinnai, ecosmart, Stiebel, Takagi, Navien, Noritz, Eccotemp, tempra, marey power, Bosch, Trutankless and others. Easily connects to tankless isolation valves using supplied 6' Color Coded Rubber Hoses. Helps maintain the performance and extend the life of your tankless hot water heater. Includes 1/8 hp utility pump, 3. 5 gallon bucket with Lid, Instructions & Flow-Aide Biodegradable Descaler. Everything you need in one kit to descale your tankless water heater in 45 minutes or less | Suitable for DIY Homeowner or contractor use.
BrandKelaro #ad
ManufacturerKelaro #ad



Use for Outdoor Shower Camping RV Trip Horse Washing, CE Certified GAR Standard Tankless Propane Gas Boiler, Camplux BW158BC 6L Instant Gas Water Heater with Rain Cap

CAMPLUX #ad - Drain plug is applied to drain the residual water from the appliance to avoid being frozen or broken. Lightweight compact design - camplux 6l gas shower comes with most of the necessary accessories to help quickly install. Only heats the water up for actually use. Led temperature display shows you the exact outlet water temperature, useful for setting your shower temperature and safely giving a comfortable hot spa for your horses, cats, dogs, etc.

Ce certified gar standard - the 6l tankless water heater complies with CE certified GAR standard throughout EU market, 20-min safety shutoff protection, such as flame failure protection, overheat protection, which features multiple protection configurations, enhancing your family safety. Endless hot water, it is great for campsite, rv, stables, saving energy - delivering 6l/min of endless hot water at the flick of a switch anywhere.

Easy to operate - heat is easy to adjust via water knob and gas knob. With 025 bar startup and ignited via 2-D cell batteries, trolley and other off grid areas. Weatherproof rain cap - equipped with a rain cap, insects and other hazards, as well as leaves, it is easily installed outdoor without worries that the rain runs down inside, prolonging its lifespan. Energy class: A+. With lightweight and compact design, it is easy to carry everywhere.
BrandCAMPLUX #ad
ManufacturerCAMPLUX #ad
Height58 cm (22.83 Inches)
Length30 cm (11.81 Inches)
Width13.3 cm (5.24 Inches)
Part NumberBW158BC
Warranty1 year warranty.



Tankless LP Gas Boiler, Camplux AY132B 5L Portable Gas Water Heater with Folding Handle, Use for Outdoor Shower Camping RV Trip Horse Bathing

CAMPLUX #ad - Enjoy tankless & endless hot water - delivering 5 litres of endless hot water per minute within 8 seconds when the shower head is on. You can enjoy hot shower, give a comfortable hot spa for your horses, pets with this portable outdoor shower. Easy to operate - you can simply adjust the water and gas flow to achieve your desired temperature.

Unlike the storage water heater, this tankless water heater only heats the water in amount for you need. Saving energy & money- camplux ay132 employs energy saving technology, higher temperature raise at same cost of gas. With 025 bar startup, it is great for campersite, RV, stables with low water pressure. Temperature ranges from 10~65°C. The 37mbar ce gas regulator is compatible with any propane gas bottle with 27mm clip-on connection.

Foldable handle for easy carry- this gas shower only weighs 4. 54kg, with a handle, which let you easily carry it anywhere. Multiple protection - flame failure protection, overheat protection, oxygen depletion safety shutoff protection to ensure your family safety. Drain plug is applied to drain the residual water from the appliance to avoid being frozen or broken. No need to be preheated, thus eliminating the waiting time for hot water.
BrandCAMPLUX #ad
ManufacturerCAMPLUX #ad
Weight4.54 kg (10.01 Pounds)
Part NumberAY132B
Warranty1 year warranty.

6. Ariston


3100721, White, Ariston ANDRIS LUX ECO 15L Oversink Electric Water Heater 2.5kW with A Titanium Enamelled, Copper Heating Element, A Class Erp Rating, Manufactured To Be Installed In UK

Ariston #ad - In this way the function will not only provide hot water efficiently, buti t will also and above all saving up to 15% on your energy bill. Water heater designed and manufactured to be installed in UK. Eco display: the unit’s smart, user-friendly display is easy to use and provides precise electronic temperature control, allowing the user to set the desired temperature for every need.

In addition, this efficient water heater offers improved protection against water corrosion. Eco evo” function: thanks to the eco evo function, andris lux eco remembers when and how much hot water you use. Fully ukca certified to be installed in the UK Market. Anti-legionella function for total peace of mind: once a month, in order to eliminate the risk of legionella bacteria developing. In yhis way, you can have the hot water you need, when you need it, without any effort. Ideal installations: Medical Environments Laboratories School Facilities.

First in class erp rating “a” across all models: with its electronic temperature control and its Eco Evo Function, the Andris Lux Eco is an energy efficient electric water heater boasting an “A” ErP energy rating across the whole range. The button “eco” indicates when the eco Evo Mode is activated and the LED indicator provides a visual guide to the water temperature inside the tank. Ideal for applications such as hospitals, this mini-tank electric water heater automatically increases the water temperature up to 65°C, schools and care homes.
BrandAriston #ad
ManufacturerAriston #ad
Part Number3100721
Warranty1 year.



80,000 BTU Indoor Installation Instant Hot Water heater, Mizudo Natural Gas Tankless Water Heater 3.6 GPM

MIZUDO #ad - Instant hot water heatertankless water heaters can provide endless hot water on demand for 2- 3 water points. Premium design and durableAdopt oxygen-free copper water tank, reduce heat loss, high efficiency and durability. Comfortable bathing experience3. 6 gpm hot water flow, precise temperature control, no water temperature sandwich. Quality serviceif you encounter product quality problems, email and message, you can contact us by phone, and we will provide service according to the warranty policy. Compact designsave over 50% of available space compared to tank water heater.
BrandMIZUDO #ad
ManufacturerMIZUDO #ad

8. AEG Haustechnik


Pressure-Resistant, 222388, AEG DDLE Basis Electronic Tankless Water Heater

AEG Haustechnik #ad - The power is supplied via a permanent installation. Continuous temperature setting of approx 30 deg C to 60 deg C. Instantaneous water heater with good temperature comfort.
BrandAEG Haustechnik #ad
ManufacturerEG Haustechnik #ad
Part Number222388

9. EcoSmart


Ecosmart 220V 11.8 KW Electric Tankless Water Heater-11.3KW TNKLSS H20 HEATER

EcoSmart #ad - Maximum temperature: 140 farad. Water connection Location: Side. Water heater Type: Electric, Tankless. Water connection Size: 1/2 in. Temperature Pressure Relief Valve.
BrandEcoSmart #ad
ManufacturerEcosmart Green Energy Products Inc #ad
Height29.21 cm (11.5 Inches)
Length9.53 cm (3.75 Inches)
Width20.32 cm (8 Inches)
Part NumberECO 11
ModelECO 11



Camplux AY132 Tankless Propane Gas Water Heater White 5L

CAMPLUX ENJOY OUTDOOR LIFE #ad - Equipped with a folding handle for easy carrying whenever you go for camping tours in remote areas, RV, like campsite, stables, holiday house and other off grid areas.

With 025 bar startup and ignited by 2pcs D-size cell batteries. Runs on propane or butane gas cylinder. 37mbar for propane gas and 30mbar for butane gas. For low water pressure areas, heater and pump assembly AY132P43, AY132Max for your choice. Drain plug is applied to drain the residual water from the appliance to avoid being frozen or broken. Instantly producing 5 litres of hot Water per minute. Heat is easy to adjust via water knob and gas knob.
ManufacturerCamplux #ad
Part NumberAY132