Modern Heat are the UK distrubutor for TESY Electric Water Heaters. TESY electric hot water cylinders offer energy efficient innovation and reliability. We offer a wide range of electric water heating cylinders, consisting of a variety of different sizes to fulfill the hot water requirements of both domestic and commercial applications.

The Benefits of Electric Water Heaters:

Homeowners and businesses alike favour Electric Hot Water Heaters for their user-friendly installation, energy efficiency, and adaptability to various settings. Our range of TESY electric water cylinders are designed and engineered to ensure a continuous and convenient supply of hot water.

Highlighted Features:

  • Energy Efficiency: The design of TESY hot water cylinders focuses on energy efficiency. This fensures that hot water is delivered with minimal energy consumption, contributing to reduced energy costs for consumers.
  • Reliability: The reliability of hot water supply is paramount. Our electric water cylinders are crafted to withstand the test of time. TESY hot water cylinders deliver hot water when needed, thereby ensuring peace of mind.
  • Versatility: TESY electric hot water cylinders are known for their versatility, catering to a wide spectrum of needs. Whether it’s a compact solution for a 1 bedroom apartment or a high-capacity unit for a bustling commercial space.
  • Simplified Installation: Specifically TESY electric hot water cylinders are designed to make installation simple and straightforward. Therefore  making them a convenient choice for new installations and replacements alike.

Elevate Your Water Heating Experience:

TESY are Europes largest manufacturer of hot water cylinders. If its time to consider the intelligent choice for your hot water needs then explore our range of hot water cylinders from TESY.

View our selection of TESY electric water heaters today, and discover the ideal solution for you.

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    8 Litre Safety Expansion Vessel – Model 8 We recommend that you install a safety expansion vessel in accordance with a Tesy Hot Water Cylinder of 30 litres or more. NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. Tesy hot water Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations. If you have any technical questions we are on hand to help 0161 439 1400 Manufactured In Europe  
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    TESY Under Counter Instant Hot Water

    £109.00 inc VAT

    The TESY Compact under counter instant hot water heater offers highly efficient electric hot water heating for instant hot water. The Compact under counter water heater holds 10 litres of pre heated water to ensure that hot water is instantly available when you need it. Ideally suited to washrooms, caravan, motor-home, boat, kitchen, bathroom, tack room etc etc.

    The desired temperature of the water can easily be adjusted and selected by turning the temperature control dial on the front of the appliance.

    Designed to be connected directly to the mains cold water supply, the TESY instant hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation. Simply connect the compact appliance to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection, both connections are 15mm connect to a 13amp fused spur and it will provide instant hot water.

    Dowload TESY Under Counter Data Sheet

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

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    The BiLight Vertical electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Highlands, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

    Add to basket Details Quick View
  • Sale!

    The BiLight Vertical electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm
    • TESY Bi-Light 50 Litre Data Sheet

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Highlands, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

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    Tesy Bilight 50 ltr HORIZONTAL

    £179.99 inc VAT

    The BiLight Horizontal electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm
    • TESY Bi-Light 50 Litre Data Sheet  

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

    Add to basket Details Quick View
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  • Out of stock
    Sale!
    Details Quick View
  • Sale!

    The BiLight Horizontal electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm
    • TESY Bi-Light 80 Litre Data Sheet

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

    Add to basket Details Quick View
  • Sale!

    The BiLight Vertical electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm
    • TESY Bi-Light 80 Litre Data Sheet

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Highlands, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

    Add to basket Details Quick View
  • Sale!

    The BiLight Horizontal electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm
    • TESY Bi-Light 100 Litre Data Sheet

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

    Add to basket Details Quick View
  • Sale!

    The BiLight Horizontal electric water heaters offer the very latest innovation in highly efficient electric hot water heating.

    The BiLight Series offer “un-vented” hot water cylinders that conform to the highest European high efficiency requirements. Manufactured in Europe, the product range offers models with storage capacity ranging from 30 to 150 litres. (30 litre / 50 litre / 80 litre / 100 litre / 120 litre / 150 litre).

    Designed to be connected directly to the mains cold water supply, the TESY unvented hot water cylinders provide fast and efficient hot water with low energy consumption and simple installation.

    Simply connect the cylinder to a mains cold water supply on the inwards feed connection and connect the hot water pipework to the outwards feed connection cylinder (both connections are 15mm, and are located on the underside of the cylinder), connect to a 13amp fused spur and the cylinder will provide hot water.

    The unique design offers an adjustable temperature control to allow the user to select the desired water temperature and high efficiency water heating that are up to 16% more efficient than rival hot water cylinders.

    • PISTON EFFECT for control of the speed of incoming water and increase of the hot water amount with up to 15%
    • INSUTECH – an in-house TESY technology for highly efficient insulation and extremely low heat losses
    • ELECTRIC On/Off Switch
    • PLASMA-ARC welding of the water tank for extended useful life
    • WALL MOUNTED (brackets included, does NOT include screws)
    • ADJUSTABLE TEMPERATURE CONTROL to allow the user to set the desired water temperature
    • LIGHT COLOUR Indicator to provide a visual indication that the water is at the designed temperature
    • FREEZE PROTECTION
    • GLASS CERAMIC coating for corrosion protection
    • Diameter of each Model is 440mm
    • TESY Bi-Light 120 Litre Data Sheet

    NB. Building Control regulations apply when safely installing an un-vented hot water cylinder. The Cylinders are unvented and require a small safety expansion vessel (5-8 litre) and a pressure release valve installing on the pipework in accordance with UK regulations.

    If you have any technical questions we are on hand to help 0161 439 1400

    Manufactured In Europe

    PLEASE NOTE THERE IS AN EXTRA DELIVERY CHARGE OF £40.00 TO ALL BT, Isle of Man, Isle of Wight, Ireland, Channel Islands, HS and ZE, and any post codes outside mainland UK. We will contact you after the order to take payment.

    Add to basket Details Quick View

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