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Speedflow Premier Unvented Water Heater 5L, 10L & 15 Litres

£141.60 £118.00
In stock
Only %1 left
Delivery Time:
Next Working Day
1 Year
Quick Code:
Order Line:
01977 663331
  • More competitive price
  • Long life stainless steel flange element
  • Power-on switch, neon power-on indicator
  • For use under or over sink

Speedflow Premier Unvented Water Heater 5L, 10L & 15 Litres.

The Speedflow premier can be wall mounted or floor mounted, offering all the features of the Speed-flow Standard, the Speedflow Premier adds features at an even more competitive price. These include a stainless steel flange element, power-on switch and neon power-on indicator. The Speed flow is suitable for use with regular taps. Choice of 5, 10 or 15L capacities with a 2.0kW element for rapid heat up and an external temperature control.

Ideal for use in cloakrooms and kitchens in offices, shops, student accommodation and domestic premises which have been extended and there is no central hot water system near by. One unit located under the kitchen sink is often used to supply hot water for light dish washing in the kitchen sink and hand washing in the cloakroom basin.

High performance, multiple sink capability, can be used with regular taps, the additional features of a Speed-flow Premier include a stainless steel flange element, power-on switch and neon power-on indicator.

  • 2.0kW element for rapid heat up
  • External temperature control
  • Supplies hot water for up to 3 basins
  • Can be used with regular taps including mixers
  • Mains pressure flow rates
  • IP Rating: IPX4
  • Neon element-on indicator
  • Glass-lined vessel with magnesium anode
  • Manually re-settable thermal cut-out
  • Wall mounting or floor standing options
  • Expansion vessel dimensions L200mm x D150mm
  • Pressure relief valve included
  • Available in 5, 10 and 15ltr, please see options

Outer Casing:
Easy clean, high impact plastic.

Heating Element:
Stainless steel flange type

Bulb type adj. to 75°C 
E setting approx. 50°C

Water Tank:
Glass lined steel 

Replaceable grey magnesium (inspect at least annually or more regularly in scale/ aggressive water conditions).

High density polyurethane foam.

Overheat temperature protection (manual reset). 
Supplied pressure relief valve must be fitted in every case (set at 6 bar). 
Frost protection if power on. 
Optional thermostatic mixing valve to maintain hot water supplied to user at constant, safe temperature.

IP Rating:

Product Code Capacity (Litres) Dimensions H x W x D Heat Up Time (mins) Weight Empty (kg) EAN Number
SF05K 5 320 x 280 x 245 6 5.5 5060423370321
SF10K 10 410 x 310 x 280 12 6.8 5060423370338
SF15K 15 530 x 310 x 280 18 8.3 5060423370345


* Minimum theoretical heat up time for 70% tank capacity from 10°C to 60°C


What is the warranty of the water heater?

One year manufacturers warranty, if it becomes faulty within the year we will replace with new!

I have a 13amp power supply will the Speedflow be suitable?

Yes the Speedflow has a 2kW element fitted and requires a 13amp power supply. However if you have limited power supplies we can supply a 1.2kW element that is available for the 10 & 15ltr models for restricted load applications, please call our customer services team.

Do I need any accessories for installation?

The Speedflow can be plumbed straight in to the cold water supply; and hot water supply straight to standard taps, however we would always recommend that it is installed with the 2ltr Expansion Vessel and Check Valve.

The expansion vessel may be required if the cold supply pipe is not long enough to allow for the expansion of water when it is heated, your plumber will be able to advise you best if the expansion vessel is required!

What temperatures should I expect from this water heater?

The maximum water temperature delivered by this water heater - 75C!

What is the reheat time of the water?

The reheat time of Speedflow premier 5ltrs will be less than 12 minutes, 10ltr 23minutes and the 15ltr 35minutes, this will also depend on the cold water supply temperature!

Is it suitable for high pressure water supplies?

The water heater will cope with fluctuating water pressures from 0.5 to 4bar pressure however to prolong the life of the water heater it is always advisable that you install a pressure reducing valve SF4 kit in the cold water supply if you have any enquiries, please call our sales team before you purchase!

Can the water heater be fitted upside down?

No the water heater must be installed the correct way up, please call our sales team for any enquiries!

Do you have spare parts for the water heater?

Yes we carry spares for the Speedflow water heaters, please call our sales team for any enquiries!

What pipe fittings do I need for the water heater?

The pipe fittings are standard UK 15mm (BSP) pipe fittings!

Can I install the Speedflow in an outbuilding that is not heated?

Yes they are ideal for Porta cabins or rooms that have very little heating!

If I have a problem with the Speedflow who do I contact?

Hyco the manufacturers have a customer help line given within the hand book, or please call our customer services team and we will help you with any problems you may have with the Speedflow water heater!


Useful Information:

Site above or below the sink, but inlet and outlet must be at the top. Floor standing or wall mounted.

Must be installed by a suitably qualified person. It is recommended that flexible hoses are used for connection to facilitate future maintenance.

Access to the thermal cut-out and element is located at the base of unit.

Minimum water pressure 0.5 bar.
Maximum water pressure 4.2 bar.

Water connection:
Inlet/ Outlet 2 x 1/2" BSP male (100mm apart centre to centre). Fittings required (not supplied): 2 x 15mm compression to 1/2" BSP female adapter.

Electrical Connection:
Installation must comply with current IEE regulations. The product should be connected to the fixed wiring of the property via a double pole fused spur with a minimum break capacity of 13 amps.

Cable pre-wired (1.5m).

Our Delivery Charges and times are explained:


Delivery Charges
All deliveries have a standard charge of £7.99 + VAT up to 20kg. Where stated, certain products are delivered FREE of charge (mainland UK only*). Check the description of the desired product and if it says free delivery then you will not be charged for delivery*

Extra Charges
Where the weight is over 20kg we reserve the right to charge more dependent on product type and delivery postcode, our customer service team will be in touch and inform you of any extra charges before we despatch.

Delivery Times
All products will have a delivery time stated in their description. Next Working Day - these products will be delivered Next Working Day if ordered before 12.00, or in certain circumstances up until 4:00 pm. Please call if you require a Next Working Day and we will try our best to get it to you. Certain products will state within 48hrs, within 3 Days or within 5 days. These products will be delivered within the time stated. If you require delivery on a certain day please put this in the comments and we will aim to deliver on that day.

Certain products such as radiators are delivered after 5 working days, when purchasing a radiator please put in the desired delivery date which is 5 working days after ordering. In some cases, stock permitting, we can get radiators out sooner. Please call or put in the customer comments if you need something urgently and we will try our best.

Saturday Deliveries
We can arrange for a Saturday delivery for certain products, please call 01977 663331 for more details.

Please note: Although we will do our utmost to deliver your product in the time stated we cannot be held responsible for any unforeseen delays. Please do not book a plumber, electrician, etc until you have received the goods as we will not be held responsible for their time. Please read our terms and conditions for further details.

additional charges may be applicable dependent on your location please double-check with our customer service team

Our Returns Policy - Please click here!