Ariston ANDRIS R 15 L Undersink Electric Water Heater  2kW, Control Unit, B class ErP rating, Economy “E” Setting, Manufactured to be installed in UK – 3100864. [Energy Class B]


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Products manufactured with the best materials for durability and reliability in all conditions.

Ideal capacity for the hot water needs of 1 person.

Easy installation in only 10 simple steps.

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ErP Rating B B B B
Capacity 10L 15L 10L 15L
Installation Undersink Undersink Undersink Undersink
Power 3kW 3kW 2kW 2kW
Heating Time (ΔT = 45°C) 12 min 18 min 17 min 26 min
Tapping Profile XXS XXS XXS XXS
Dimensions 36 x 29,8 x 38,5 cm 36 x 34,6 x 38,5 cm 36 x 29,8 x 38,5 cm 36 x 34,6 x 38,5 cm


Weight: 8.14 kg
Dimensions: 36 x 34.6 x 38.5 cm; 8.14 Kilograms
Brand: Ariston
Part: 3100864
Batteries Required: No

55 Responses

  1. Gabriel3264 says:

     United Kingdom

    We bought this for a detached annexe and it does the job perfectly. Plenty of very hot water for the kitchen and bathroom sinks. Fits nicely under the kitchen sink too.

  2. Anonymous says:

     United Kingdom

    Small and suitable for under sink installation. Provides controllable warm water supply.

  3. MelindaMcLaughl says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  4. Anonymous says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  5. Anonymous says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  6. VictoriThornber says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  7. Anonymous says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  8. Joanne says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  9. Anonymous says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  10. Anonymous says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  11. Anonymous says:

     United Kingdom

    It’s gorgeous outlook and fast to boil!
    Energy saving compare with my old 50L water heater. Just love it!

    Premium Italy produc

  12. BernadetteBamfo says:

     United Kingdom

    Golden Review Award: 2 From Our UsersUsing this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  13. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersUsing this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  14. Anonymous says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  15. Anonymous says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  16. Anonymous says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  17. Anonymous says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  18. JessiePrins says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  19. MilfordLeidig says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  20. AaronMarxi says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  21. Anonymous says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  22. Anonymous says:

     United Kingdom

    Using this to heat water for a sink in a bathroom and a kitchen sink for an annex. Easy to install, hard wired to a plug socket and attached to the wall. Hot water pretty much instantly. Excelllent bit of kit for the job

  23. Char Hardin Horror Movie Reviews says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  24. Anonymous says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  25. Anonymous says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  26. Anonymous says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  27. CarolineTaubman says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  28. DickSutherland says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  29. Anonymous says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  30. Anonymous says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  31. Anonymous says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  32. LoriSouleq says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  33. KatrinaPennell says:

     United Kingdom

    bought for outside in lambing shed hot water on demand brilliant.

  34. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  35. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  36. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  37. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  38. mommasbacon says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  39. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  40. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  41. GerardoZLP says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  42. NedSummerfield says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  43. HEATHER @ runfastermommy says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  44. Anonymous says:

     United Kingdom

    Used to replace same , fairly straightforward changeover, have fitted before so I know they’re are really useful and give a good 15 litres of hot water ,I’d recommended

  45. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  46. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  47. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  48. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  49. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  50. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  51. CJ Garcia says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  52. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  53. Victorina5314 says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  54. CNET says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .

  55. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBought this to give us hot water in an old cottage without running the emersion heater ,left it set on economy and has given us all the hot water we have needed so far .