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Redring Powerstream Unvented Instantaneous Water Heaters

£150.00 £125.00
In stock
Only %1 left
Delivery Time:
Due Mid July
2 Years
Quick Code:
Order Line:
01977 663331
  • Unique water flow operated power switch
  • Half power selection available on installation
  • A Energy efficiency rating
  • Available in 9.5kW, 10.8kW and 12kW

The Redring Powerstream Unvented Instant Water Heater

The Redring Powerstream Instantaneous water heater, is ideal if you don't have the room or budget for a centrally stored hot water cylinder, as the compact size of this unit allows it to be tucked under the sink or in a cupboard.

Economical to run and no standing heat loss as happens with water cylinders. Powerstream unvented inline instantaneous water heaters provide a continuous regulated flow of instantly heated water for hand washbasin use.

Their compact size and simple inline installation at point of use makes them ideal for en suite shower rooms, small washrooms. The Powerstream instant water heater will supply 1 or 2 hand wash basins, or a basin and shower when installed with the optional RM1 manual mixer accessory.


  • When supplying basins, please use spray taps
  • Flow stabiliser/service valve & fixing pack supplied
  • Impact resistant moulded cover, with corrosion resistant zinc coated steel back plate
  • Unique water flow operated power switch
  • Half power selection available on installation
  • Thermal cut-out protection
  • A Energy efficiency rating
  • Available in 9.5kW, 10.8kW and 12kW
  • Option to disable one of the two heating elements internally at installation to reduce power
  • Approvals, WRAS, BEAB & CE
  • Simple to install, 3 models to choose from
  • If the unit is to supply a basin, we recommend that you use standard spray taps
  • Designed to accept 10mm supply cable & for long cable runs greater than 10M
  • If the unit is to supply a shower, we recommend the Redring shower mixer kit


Product Code Power (kW) Dimensions  EAN Number 
RPS95 9.5kW H160 x W307 x D72mm 5017084453016
RPS108 10.8kW H160 x W307 x D72mm 5017084452040
RP12 12kW H160 x W307 x D72mm 5017084452026

What is the warranty of the Redring Powerstream ?

Two years manufacturers warranty!

Will the Redring Powerstream supply two basins simultaneously?

Yes, however please make sure that the head is the same at each outlet if they are to be used at the same time. The pipe runs must be the same length, if not then one outlet will take all the hot water!

Will the Redring Powerstream supply a basin or sink mixer taps?

Yes, however Redring recommend that you use ¼ turn lever control spray taps

Is the Redring Powerstream suitable for a shower supply?

Yes the Redring Powerstream range are suitable for supplying a shower, however they are not suitable for shower mixers, they must be used with the Redring Shower Mixing Kit 

Can the Redring Powerstream be installed anyway up?

The Redring Powerstream range can be installed upright or lengthways whichever is convenient for plumbing and wiring!

What side is the cold water inlet on the Redring Powerstream?

The cold water inlet is on the right hand side as you look at it installed on the wall!

Can the Redring Powerstream be installed above or below the sink or basin?

The Redring Powerstream range can be installed under or over the sink or basin!

Do I need any accessories for the Redring Powerstream?

No accessories required. The Redring Powerstream just needs a water isolator valve that is supplied with the unit. However if a non-return valve is fitted in the inlet feed to the Powerstream then the installation should include a 3.5bar pressure reducing valve and a 6bar pressure relief (expansion) valve!

I have very high water pressure will this affect the Redring Powerstream`s performance?

The Redring Powerstream instant water heaters have an inbuilt water stabiliser so it will regulate fluctuating water pressures ranging from 0.7bar up to 10.3bar. The water isolator or service valve supplied can also be used to regulate the inlet water pressure this will reduce the cold water inlet flow and will help increase the water temperature at the tap. If you are unsure of your cold water supply pressure you can ask your water supplier to check this for you free of charge!

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

No the Redring Powerstream, 9.5kW requires 40amp, 10.8kW requires 45amp and the 12kW requires a 50amp supply, please note each water heater requires an independent power supply!

Can you fit a UK 13amp plug to the Redring Powerstream water heater?

No all instant water heaters must be installed by a competent electrician and for safety reasons they must be hard wired to a suitable power supply!

What size cable do I need for the Redring Powerstream water heaters?

The 9.5kW and 10.8kW requires to 10mm2 cables and the Redring 12kW requires 10mm to 16mm2, always seek advice from a qualified electrician!

What is the maximum cable size the Redring Powerstream will accept?

Maximum cable size the Redring Powerstream will accept is 16mm2!

I dont have a mains water supply can I use the Redring Powerstream water heater?

No the Redring Powerstream must be connected to the mains water supply only!

I have a problem with lime scale will the Redring Powerstream be suitable?

The Redring Powerstream has been designed to operate efficiently with all mains water supplies!

Do you have spare parts for the Redring Powerstream water heater?

Yes we carry spares for the Redring Powerstream water heaters, please call our sales team on 01977 663331 for any enquiries!

What pipe fittings do I need for the Redring Powerstream water heater?

The Redring Powerstream pipe fittings are standard UK fittings, your installer will need 2 x 15mm compression fittings to connect the inlet and outlet pipes. The Redring Powerstream is supplied with a cold water isolating compression fitting!

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

Redring do not recommend that the water heater is installed in a room where it may be subject to freezing!



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!