Best High Efficiency Water Heater

Dreo Electric Heater, 1500W Energy Efficient Space Silent Room Heater, Portable Ceramic Fan Heaters, Thermostat 3 Modes 12H Timer, Overheat & Tip Over Protection, for Bedroom, Atom 316, Gold

Dreo Space Heater, 70° Oscillating Electric PTC Ceramic Heater with Thermostat, Remote Control, 3-Mode 3-Speed, 1-12H Timer, Overheating & Tip-Over Protection, Energy-Saving-ECO-Mode, Atom One

Pro Breeze 2000W Mini Ceramic Fan Heater - 3 Heat Settings & Fan Only Mode with Built-in Overheat and Tip Over Protection, Electric Heater for Home, Office and Bedroom

Stiebel Eltron DCE-X Premium Compact Instant Water Heater, Suitable for Showers, Maximum Energy Efficiency, Accurate Temperature delivery, 238159, 220240 V, White, 10/12 kW

Geepas 10L Electric Catering Urn, 1650W Instant Hot Water Boiler Dispenser - Tea Urn Kettle Home Brewing Commercial Office Use with Keep Warm - Easy Pour Tap, Stainless Steel – 2 Year Warranty

Vinabuks Electric Water Heater ， 2.5kw 240v Instant Water Heater 2.5kw 240v 3.0 Gallon on Demand Water Heater with Digital Temperature Control,Smart Control Point of Use (Upper- 11L)

Dimplex ECOT1FT Tubular Heater - 1 Foot Tube with Built in Thermostat - Mounting Brackets Included

Tesy Hot Water Cylinder (80 Litre)

Ariston ANDRIS LUX ECO 15 L Undersink Electric Water Heater 2.5kW with A Titanium Enamelled Tank, A Class Erp Rating, Copper Heating Element, Manufactured To Be Installed In UK - 3100722, White

Thermomate ELEX5.5 Instant Electric Water Heater with Backlit LED Display, 5.5kW Tankless Hand Wash for Basins Sinks, Over/Under Sink Installation, ‎Hard Wire