Best 40 Gallon Indirect Water Heater

Ariston VELIS EVO 45 L Electric Storage Water Heater, Inclusive Of Unvented Kit. Manufactured to be installed in UK.

Ariston ANDRIS LUX ECO 10 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 - 3100718 , White

Ariston ANDRIS R 15 L Undersink Electric Water Heater, 3kW, Control Unit, B class ErP rating, Economy “E” Setting, Manufactured to be installed in UK - 3100834.

Ariston PRO1 ECO 50 L Electric Storage Water Heater with A 50 L, Inclusive Of Unvented Kit, B Class Erp Rating, Waterplus Technology, Manufactured To Be Installed In UK - 3820019. , White

TTulpe Smart Master 50 - Flat Electric Storage Water Heater with Smart Control

Ariston Next Evo X 16 Litre Gas Water Heater Including Standard Horizontal Flue kit 2 Year Warranty White

Ariston Andris White 6L Undersink Electric Water Heater 1.5kW 3626292 - Hanicks

ATC Water Heaters (14 Litre)

TTulpe Revolve 50 Litre Universal Mounting Water Heater, 50 Litre Hot Water Heater, which can be mounted both horizontally and vertically

DWD® Water Heater Boiler 1.8Litre -3.0 Litre Stainless Steel Tank Laser Welded Tank & Tap for All Camping Stoves with 4 Inch 100mm or 60mm Flue, Half Round Wraps around the Flue- 1.8 Litre - 60mm Flue