Grundfos Amazon Twin Impeller Positive Head Pump 2.0 Bar

Grundfos Amazon 2.0 Bar Twin Impeller Positive Head Pump - STP-2.0 B

44 reviews

£289.98 (Inc. VAT)

Less than 10 Available


Plumbworld has the lowest price for this product!


Twin Impeller Shower Pump

Twin pumps are designed using the highest standard of technology to boost your water pressure of both hot and cold water supply to a single shower, bath, shower mixer or mixer tap. Put a stop to low water pressure with this pump. It is perfect for transforming your unsatisfactory shower into a powerful and invigorating shower that you'll never want to leave.

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Positive Head

A positive head shower pump is designed to be gravity fed, therefor it needs a 'head' of distance (at least a metre) between the pump and the bottom of the cold water cistern. The gravity feed 'kick-starts' the pump, pushing water straight through to your shower. 

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The Amazon Brass Pump range is undoubtedly the ‘Rolls Royce’ of Grundfos shower pumps - designed and manufactured to the highest of standards. With brass impellers and machined brass stampings, these pumps can be genuinely described as ‘Heavy Duty’ since each model offers high performance and durability. These continuously rated regenerative pumps are suited to domestic, commercial or light industrial use. Products within this range are fitted with long-life silicon carbide seals and anti-vibration feet to keep the operating noise to a minimum.

All brass pumps are supplied with stainless steel flexible hoses and are covered by a comprehensive 5 years warranty. A brass pump will transform any compatible shower system into an experience that is both invigorating and memorable.

Design & Features:

  • Twin impeller - 2.0 Bar
  • Continuously rated regenerative pump
  • Anti-vibration feet - keeping noise to a minimum
  • Long-life carbide seals - ensure reliability for years to come
  • Brass impellers and machined brass stampings
  • Supplied with stainless steel flexible hoses
  • Suitable for use with 22mm pipework

Additional Info:

  • Part Number: STP-2.0 B
  • Guarantee: 5 years
  • Installation of a Surrey flange is recommended for pumps up to 3 bar pressure
CE Approved 5 Year Guarantee

360 Image




Construction Brass
Feed Compatibility Twin - Hot AND Cold
Installation Positive Head
Output 2 Bar
Pump Type Regenerative

Grundfos Amazon 2.0 Bar Twin Impeller Positive Head Pump - STP-2.0 B

£289.98 (Inc. VAT)

Stock status: Less than 10 Available
Order in next for delivery on Tuesday - 03/08/2021

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Prices last checked on 31/07/2021
All prices are inc VAT and include delivery charges

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44 Product Reviews

  • Robin
    5/ 5

    My 16 year old ShowerForce EasyBoost pump started to leak. I'm very pleased I chose to replace it with a Grundfos Watermill Amazon 2.0 Bar Twin Positive Head STP-2.0B brass pump. Plumbworld, kept me informed by email about delivery and the pump was very well packed. The pump installation was straight forward but I redesigned the 22mm pipework in my airing cupboard to allow for a possible future feed to a second shower room; this required careful design. I fitted Pegler full bore lever valves to the tops of each of the 4 supplied flexible tails to make isolation for periodic cleaning of the pump filters a simple matter. I placed the pump on a 300mm x 300mm x 25mm granite paving slab and insulated this from the wooden floor boards with strips of "P" profile 3-5mm gap Stormguard EDPM door/window seal. The bathroom is next to the airing cupboard and the shower head is 330mm below the bottom of the cold water tank. With the pump fitted, but switched off, flow through the Pegler Mimo thermostatic mixer valve (min. 0.1 Bar) and Groher eco (min. 1 Bar input and restricted 9 l/min flow rate) shower head was approx. 0.7 litres per minute. When the pump is switched on and the shower valve is opened, the pump starts fine and delivers approx. 8 l/m. The noise of the old pump was much louder than the sound of water from the shower head but the new Grundfos pump cannot be heard over the sound of the shower water. The noise from the pump in an adjacent bedroom is no longer intrusive and would be unlikely to disturb a sleeping child.

  • Shyann Peterson
    5/ 5

    This is a great shower pump. I bought it to replace a plastic bodied pump bought from a DIY store a couple of years ago. That pump failed leaving water leaking through the ceiling of the room below. I ordered this pump because it had great reviews and haven't been disappointed, it is much quieter than the pump it replaced and much more powerful. The push fit connections make fitting it into an existing installation a breeze, I hardly even needed the toolbox. Plumbworld had the best price for this unit and have given great service with quick delivery, they even accommodated my request to change delivery location when I realised I wouldn't be around to accept delivery at the original address. I'm hoping the pump gives long and trouble free service.

  • Jim
    5/ 5

    Very impressed with the superb service supplied by Plumbworld. Everything was very smooth and easy to do and the delivery was fast. The pump itself replaced an older grunfos wasp pump which I'd had for at least 10 years. This pump is a lot quieter than the previous one, so much so that I had to check it was on as I didn't hear it!! It allows both showers in the house to be used at the same time with no apparent drop in pressure. Grundfos are well established and I know I could have got a cheaper pump but you pay for what you get and in my humble opinion Grundfos is a reliable make. Overall extremely pleased with the purchase and the professional way that Plumbworld dealt with the whole process from start to finish. Would definitely highly recommend.

  • Ansy Meaden
    5/ 5

    I ordered this pump to replace an old Aura45 that was in the house when we moved in 8 years ago it was very loud heard all over the house. What a difference really quiet when running should keep others sleeping on those early starts. Solid brass finish worth the bit extra and 5 year cover. I fitted full bore valves as nothing there before for maintenance, bit of pipe repositioning needed as flex hoses fairly rigid. Really impressed with the service from Plumbworld called them up to check manufacturer part number, as was given this from Grundfos ordered over the phone and arrived next day as promised via DHL.

  • Nigel R
    5/ 5

    This pump was straightforward to install, it looks good, and functions very effectively. Even the Grundfos packaging is well designed! It comes with 4 push-fit 22mm flexible adapters. These dont have integral isolation valves, but this wasnt an issue for me because my installation already had adequate means of isolation and drainage. The brass construction and continuous rating make this unit more expensive than plastic alternatives, but hopefully this will pay off in the long term.

  • Gerry Kinsale
    5/ 5

    At first glance one can see that this pump is beautifully made, with the purposeful design of the motor being augmented by beautiful brass water housing and connectors. It definitely looked a quality piece of kit - and performs as well as it looks, supporting the old engineer adage if it looks right, it performs right ! Pump is easy to fit and performs well - definitely the strong but silent type. The quality of construction promises many years of trouble-free service.

  • Gauge Abbott
    5/ 5

    Great service again from plumbworld..... Ordered the pump with a two week lead time to installation and it arrived within three days of placing the order when they said it would. Went for the better quality pump, due to concerns of the amount of plastic in pumps now a days, and have to say the quality is fantastic. Considering the pump is installed in an empty room which echos the pump is very quiet, defiantly recommend.

  • Charlize Graves
    5/ 5

    With the help of my plumber I selected this pump to replace an existing 2 bar pump and its performance is by far better than that of the previous pump even though it is sited in the loft and a long way from the hot water cistern (the worst possible place for a shower pump). I am very pleased with the purchase. It is also quieter than the previous pump.

  • Kiana Andrade
    5/ 5

    Previously had 1.5 single model.That developed a leak after 11years and a second shower added in November.This model is a lot neater and certainly quieter,2.0bar twin impeller is a big improvement !! ORdering was simple and delivered as promised. Excellent service alround and after sales follow up. Will definitely use you again.

  • Filmcan
    5/ 5

    I bought this shower pump to replace a very similar previous pump and it was a very straight forward swap-over. I live in a hard water area so these pumps tend to die after about five years. It arrived quickly so I was soon up and running again. Thanks Plumbworld.