Instant Water Heaters

Whether you need to supplement your existing hot water supply or have a higher capacity for boiling water, an instant water heater is the perfect solution.

Units like an inline water heater heat the water that is coming through your taps, so in rooms that are the furthest away from the boiler you’re no longer waiting for an age for the taps to go hot.

Wall mounted or freestanding boiling water heaters give you instant boiling water, perfect for situations where you need a lot of boiling water – for example in a canteen.

To learn more about different types of water heaters, check out our Water Heaters Buying Guide.

Redring 12kW Powerstream Instant Water Heater (RP12) - RP12/45793202

Redring 12kW Powerstream Instant Water Heater (RP12) - RP12/45793202

£156.95 (inc. VAT)

Redring 45673201 Powerstream Eco Unvented Instantaneous Water Heater 9.5kW - RP1E

Redring 45673201 Powerstream Eco Unvented Instantaneous Water Heater 9.5kW - RP1E

£164.95 (inc. VAT)

Redring 9.5kW Powerstream Instant Water Heater (RP1) - RP1/45793201

Redring 9.5kW Powerstream Instant Water Heater (RP1) - RP1/45793201

£119.95 (inc. VAT)

Redring 43678901 Washroom Water Heater 3kW

Redring 43678901 Washroom Water Heater 3kW

£65.95 (inc. VAT)

Hyco Aquila 9.6kW Instantaneous Inline Water Heater Thermostatic - IN96T

Hyco Aquila 9.6kW Instantaneous Inline Water Heater Thermostatic - IN96T

£208.95
£189.45 (inc. VAT)

SALE
Hyco Rho Instantaneous Inline Water Heater 4.4 kW Themostatic - IN44T

Hyco Rho Instantaneous Inline Water Heater 4.4 kW Themostatic - IN44T

£139.95 (inc. VAT)

Redring 10.8kW Powerstream Instant Water Heater  (RP10.8) - RP10.8/45793204

Redring 10.8kW Powerstream Instant Water Heater (RP10.8) - RP10.8/45793204

£129.95 (inc. VAT)

Hyco Rho Instantaneous Inline Water Heater 6.0 kW Standard - IN60

Hyco Rho Instantaneous Inline Water Heater 6.0 kW Standard - IN60

£118.95
£114.95 (inc. VAT)

SALE
Hyco Rho 6.0kW Instantaneous Inline Water Heater Themostatic - IN60T

Hyco Rho 6.0kW Instantaneous Inline Water Heater Themostatic - IN60T

£159.95 (inc. VAT)

Hyco Rho Instantaneous Inline Water Heater 4.4 kW Standard - IN44

Hyco Rho Instantaneous Inline Water Heater 4.4 kW Standard - IN44

£111.95
£106.70 (inc. VAT)

SALE
Hyco Microboil 6L Boiling Water Unit 38 cups White 1 year warranty - MBS6

Hyco Microboil 6L Boiling Water Unit 38 cups White 1 year warranty - MBS6

£674.95 (inc. VAT)

Hyco Omega 5L Boiling Water Unit White - OMEG5

Hyco Omega 5L Boiling Water Unit White - OMEG5

£518.95
£517.95 (inc. VAT)

SALE
Heatrae Sadia Express 7 Litre 3kW Water Heater 95010161 - 95010161

Heatrae Sadia Express 7 Litre 3kW Water Heater 95010161 - 95010161

£142.50 (inc. VAT)

Hyco Microboil 3L Boiling Water Unit 20 Cups White 1 Year Warranty - MBS3

Hyco Microboil 3L Boiling Water Unit 20 Cups White 1 Year Warranty - MBS3

£604.95 (inc. VAT)

Hyco Omega 3L Boiling Water Unit White - OMEG3

Hyco Omega 3L Boiling Water Unit White - OMEG3

£453.95
£453.50 (inc. VAT)

Hyco Rho Instantaneous Inline Water Heater 4400W Themostatic - IN44T - Return Unit

Hyco Rho Instantaneous Inline Water Heater 4400W Themostatic - IN44T - Return Unit

On Sale from £104.95 (inc. VAT)

Redring 45673201 Powerstream Eco Unvented Instantaneous Water Heater 9.5kW - RP1E - Return Unit

Redring 45673201 Powerstream Eco Unvented Instantaneous Water Heater 9.5kW - RP1E - Return Unit

On Sale from £123.95 (inc. VAT)

Hyco Aquila Instantaneous Inline Water Heater 9600W Thermostatic - IN96T - Return Unit

Hyco Aquila Instantaneous Inline Water Heater 9600W Thermostatic - IN96T - Return Unit

£208.95
£177.95 (inc. VAT)

Hyco Microboil 25L Wall Mounted Boiling Water Heater White - MBS25

Hyco Microboil 25L Wall Mounted Boiling Water Heater White - MBS25

£1,184.95
£1,168.00 (inc. VAT)

SALE
Hyco Microboil 16L Wall Mounted Boiling Water Heater White - MBS16

Hyco Microboil 16L Wall Mounted Boiling Water Heater White - MBS16

£949.95 (inc. VAT)

Hyco Microboil 8L Wall Mounted Boiling Water Heater White - MBS8

Hyco Microboil 8L Wall Mounted Boiling Water Heater White - MBS8

£744.95 (inc. VAT)

Water boilers are essentially like big kettles. There is a heating element within them that heats your water to boiling. This water is then stored in an insulated container, ready to use whenever you need it.

 

When shopping for water heaters that plumb into your existing mains supply, you have to choose between a vented and unvented system. Because an unvented system doesn’t draw cold water into a separate holding tank, it takes up less room. They can also be quicker and more simple to install. They also tend to have better water pressure as they have the same pressure as your mains supply.

 

Vented water heaters provide instant hot water by drawing cold water from your supply and storing it in the holding chamber. Then, when you need it, it is moved from the holding chamber, over a heated element to deliver instant hot water. While this is happening, more cold water is drawn into the holding chamber for the process to repeat.