Power: 5500W. Fast Hot Water: Enjoy hot water in just 2 seconds without the need for preheating. The temperature range is from 30 to 55℃, providing clear visibility. Energy Saving: With a tankless water heater, you can save up to 60% on hot water costs by eliminating losses from distribution, startup, technical systems, circulation, and storage.
eBay
12V Heating Element Immersion Water 1 inch BSP DN25 100W 200W 300W 400W 600W Electric Solar Tubular Heater
Aliexpress UK
Rated capacity: 10L. Mini tank water heater is suitable for installation under the sink. Quickly provide hot water at the point of use. After installation, open the water inlet valve and turn the faucet to the hot water outlet.
eBay
12V Immersion Cartridge Heating Element M16 Thread Stainless Steel 304 50W 100W 150W Heater Water
Aliexpress UK
Fast Electric Instant Hot Water Tap RX-008 - 220V & Digital LED Display 3000w. Power: 3000W for rapid heating. Rated power: 3000W. Flexible outlet direction: The Vientiane hose lets you adjust the water outlet direction for effortless use in any sink or basin.
eBay
1PC M1/2' to F1/2' Brass Chrome Finished safety Valve 0.7MPa Water Heater Safety Valve DN15 Pressure Relief Valve
Aliexpress UK
Power: 4500W. The water heater adopts fast heating system function, hot water output. Item Type: Water Heater. 1 x Water Heater. The water output is large, the temperature is low, the water output is small, and the temperature is high.
eBay
DERNORD 48v 96v with Thermostat Tubular DC Heating Element SUS304 250W/450W/1000W/1500W DN32 Heater Immersion for Water
Aliexpress UK
The Hyco Handyflow 5L White Undersink Water Heater and Tap is a corded electric storage tank water heater with a power source of 240V. This A-rated energy efficient unit features a vented heating system and a boiler, making it ideal for heating water efficiently. With a manufacturer warranty of 1 year, this Hyco model is designed to be mounted under a sink and has a water connection location at the top, offering a convenient and space-saving solution for hot water needs in the kitchen or bathroom.
eBay
2x Radiator Valve Key Faucet Key Radiator Water Tap Plumbing Hole Bleed Bleeding Zinc Alloy Heater Wrench For Venting Air Valve
Aliexpress UK
Ariston under sink water heater, 2 kW 10 L in working order only removed for Shop refit.  Comes with expansion tank small under sink wall and also water pressure valve.
eBay
DERNORD 1.5 Inches Immersion Tri Clamp Tubular Heating Element 220V 2500w/3500w/4500w Brew Resistance Heater Water
Aliexpress UK
Rated Power: 6500W. With protection against dry heating and over-temperature protection. It is safe, energy-saving and long lifespan, providing you and your families more comfortable bathing experience.
eBay
Tuya Smart 40A Wifi+Bluetooth Water Heater Boiler Touch Switch 8800W Timer Schedule Voice Control Alexa Google Home Yandex Alice
Aliexpress UK
Instantaneous water heater: The electric water heater Elex 5.5 ensures a comfortable water temperature up to 40°C and can be used as an under-sink unit or as a water heater for installation above the sink.
eBay
Flue Elbow Pipe Chimney Liner Bend Stainless Steel Multi Flue Stove Pipe Gas Water Heater Exhaust Pipe
Aliexpress UK