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    Under Sink Water Heater

    Shop the best under-sink water heaters from some of the best brands available. Choose the right one for your space and enjoy the reliability of instant hot water as and when you need it. 

    Take a look at our over sink water heaters and our full water heaters range.

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    20 Items

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    1. ATC Compact 5.7kW Energy Efficient Instantaneous Water Heater | INST5.7
      ATC Compact 5.7kW Energy Efficient Instantaneous Water Heater | INST5.7
      SKU: INST5.7
      £148.31 £123.59
      Add to Cart
    2. ATC Pacific 2.5kW Wall Mounted 14 Litre Undersink Water Heater | W15-U
      ATC Pacific 2.5kW Wall Mounted 14 Litre Undersink Water Heater | W15-U
      SKU: W15-U
      £117.54 £97.95
      Add to Cart
    3. ATC Pacific 2kW Wall Mounted 10 Litre Undersink Water Heater | W10-U
      ATC Pacific 2kW Wall Mounted 10 Litre Undersink Water Heater | W10-U
      SKU: W10-U
      £93.54 £77.95
      Add to Cart
    4. ATC Pacific 2kW Wall Mounted 5 Litre Undersink Water Heater | W5-U
      ATC Pacific 2kW Wall Mounted 5 Litre Undersink Water Heater | W5-U
      SKU: W5-U
      £83.58 £69.65
      Add to Cart
    5. Aztec Instant 12kW Water Heater with Touch Screen Control White | 4052
      Aztec Instant 12kW Water Heater with Touch Screen Control White | 4052
      SKU: 4052
      £300.00 £250.00
      Add to Cart
    6. Aztec Instant 8kW Water Heater with Touch Screen Control White | 4051
      Aztec Instant 8kW Water Heater with Touch Screen Control White | 4051
      SKU: 4051
      £300.00 £250.00
      Add to Cart
    7. dexPro 5L Undersink Vented Water Heater 2.kW c/w Vented Mixer Tap & Hoses | DXU5LV
      dexPro 5L Undersink Vented Water Heater 2.kW c/w Vented Mixer Tap & Hoses | DXU5LV
      SKU: DXU5LV
      £126.72 £105.60
      Add to Cart
    8. Dexpro Delux Digital 3.5kW Inline Instant Water Heater | DXI35DT
      Dexpro Delux Digital 3.5kW Inline Instant Water Heater | DXI35DT
      SKU: DXI35DT
      £102.72 £85.60
      Add to Cart
    9. Dexpro Delux Digital 5.5kW Inline Instant Water Heater | DXI55DT
      Dexpro Delux Digital 5.5kW Inline Instant Water Heater | DXI55DT
      SKU: DXI55DT
      £105.60 £88.00
      Add to Cart
    10. Hyco Handyflow 2kW 5Ltr Water Heater & Vented Mixer Tap | HF05MVC
      Hyco Handyflow 2kW 5Ltr Water Heater & Vented Mixer Tap | HF05MVC
      SKU: HF05MVC
      £121.96 £101.63
      Add to Cart
    11. Hyco Powerflow 80 Litre Unvented Multipoint Wall Mounted Water Heater | PF80S
      Hyco Powerflow 80 Litre Unvented Multipoint Wall Mounted Water Heater | PF80S
      SKU: PF80S
      £454.70 £378.92
      Add to Cart
    12. Hyco Speedflow Unvented Glass Lined Tank 10 litre Water Heater | SF10K
      Hyco Speedflow Unvented Glass Lined Tank 10 litre Water Heater | SF10K
      SKU: SF10K
      £133.99 £111.66
      Add to Cart
    13. Hyco Speedflow Unvented Glass Lined Tank 15 litre Water Heater | SF15K
      Hyco Speedflow Unvented Glass Lined Tank 15 litre Water Heater | SF15K
      SKU: SF15K
      £150.18 £125.15
      Add to Cart
    14. Hyco Speedflow Unvented Glass Lined Tank 5 litre Water Heater | SF5K
      Hyco Speedflow Unvented Glass Lined Tank 5 litre Water Heater | SF5K
      SKU: SF05K
      £129.58 £107.98
      Add to Cart
    15. Hyco Speedflow Unvented Stainless Steel 10 litre Water Heater | SF10SS
      Hyco Speedflow Unvented Stainless Steel 10 litre Water Heater | SF10SS
      SKU: SF10SS
      £198.78 £165.65
      Add to Cart
    16. Hyco Speedflow Unvented Stainless Steel 15 litre Water Heater | SF15SS
      Hyco Speedflow Unvented Stainless Steel 15 litre Water Heater | SF15SS
      SKU: SF15SS
      £222.34 £185.28
      Add to Cart
    17. Hyco Thermostatic Mixing Valve | TMV15-1
      Hyco Thermostatic Mixing Valve | TMV15-1
      SKU: TMV15-1
      £69.20 £57.67
      Add to Cart
    18. Stiebel Eltron DEM 3 Set Instantaneous Unvented Water Heater
      Stiebel Eltron DEM 3 Set Instantaneous Unvented Water Heater
      SKU: 236584
      £307.02 £255.85
      Add to Cart
    19. Stiebel Eltron DEM 4 Set Instantaneous Unvented Water Heater
      Stiebel Eltron DEM 4 Set Instantaneous Unvented Water Heater
      SKU: 236462
      £307.02 £255.85
      Add to Cart
    20. Stiebel Eltron DEM 6 Set Instantaneous Unvented Water Heater
      Stiebel Eltron DEM 6 Set Instantaneous Unvented Water Heater
      SKU: 236463
      £307.02 £255.85
      Add to Cart
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    Category
    Colour
    1. Grey 1 item
    2. Stainless Steel 1 item
    3. White 18 items
    Price
    1. £0.00 - £100.00 6 items
    2. £100.00 - £200.00 8 items
    3. £200.00 - £378.93 6 items
    Type
    1. - 6 items
    2. Instantaneous Water Heaters 4 items
    3. Instantaneous Unvented Water Heaters 3 items
    Brand
    1. ATC 4 items
    2. Hyco 8 items
    3. Trianco Electric Heating Solutions 2 items
    4. Stiebel Eltron 3 items
    5. dexPro 3 items
    Wattage
    1. 12Kw 1 item
    2. 3.0kW 1 item
    3. 8kw 1 item