Increasing Pressure and Flow with a Shower Power Booster

[@grant6350]

Have fitted a few of these, they are quick and easy to fit and much quieter than the large noisy traditional hot water/shower pumps. The increase in pressure with these is very good.

[@alandwright2]

Thank you for your endorsement

[@MGMORIGINAL]

Just ordered mine, should be here tomorrow, cannot wait to try it. Thanks

[@darrenf3949]

Just fitted this little pump to my hot and wow amazing for a little pump thank you Alan.

[@alandwright2]

Brilliant work Daren and thank you for your kind words!

[@nickbeesley4513]

Have had 2 of these fitted to the hot and cold gravity-fed house supplies for over 3 years as it was less than 0.2 bar pressure. They work better than advertised - shower went from 2.5l/m to over 6l/m (easy to fit and very quiet), but I'm considering fitting 2 more to the hot and cold shower feeds to boost it further. Will the flow double again or will the improvement be less noticeable; will the pressure increase with the same shower setup high flow flexipipe and head)? As an aside, the flow rate was so low on the shower to start with that I had to fit a switch box to swap between automatic mode and manual override for the shower as the flow sensors didn't trigger the pumps. Also added an Alexa plug to the mains supply so they don't run at night if someone uses the toilet! Versatile product and I'm very impressed - highly recommended.

[@andymav3023]

Amazing product I will be installing these from now on.

[@alandwright2]

Thanks Andy! Check out our website if you need any more information on our pumps showerpowerbooster.co.uk/

[@SAHITAJ1]

hi Alan ! does this work on mains fed Mira electric shower 9.8 kw ? bit of confusing pipework layout in the property as there is not main stop valve for whole property but all appliances get supplied individually from mains raiser of big block of flats and electric shower is directly connected to the main coming down the raiser but its run on 15 mm pipe to the shower unit where distance between raiser and shower unit is quite long so i was wondering if this booster would help thank in advance.

[@darekanglia41]

This is incredible.... Its works perfect... Make pressure double... WOW.. small stuff just works perfect .. The best .. really high recommend..... I have water tank ...and is to low ... so I have low pressure and hot shower dont have power to make hot water..... After montage this small booster.. all problems gone ... works perfect !!!!!

[@alandwright2]

What a review! Thank you Darek for your support! showerpowerbooster.co.uk/

[@darekanglia41]

@@alandwright2 unfortunately afer one year no hard use is stop working.. one from part insides is broken . i cant send u photo hire .. maybe this happen because we use this not on tap water .. we have water from well ..sorry

[@alandwright2]

@@darekanglia41 Hi Darek, Please contact customer service and we can see what we can do to help. Email [e-mail] or phone [phone]

[@blistiff]

This looks a very interesting product. I'm thinking of getting one to boost a string of radiators that struggle on undersized pipework. Do you do a heat activated switch so when heating comes on this can be detected and switch itself on?

[@alandwright2]

Please visit www.wrightpumps.co.uk/ and you will see my range of Radiator Flow Boosters. You can also contact me at [e-mail] There are several ways of controlling the pumps. I have a new sensor which will turn off the pumps when the temperature rises and other ways of turning the pumps on when the temperature is low.

[@davidkneale7455]

@@alandwright2 Hi Alan, plumber of 50 years here but sill learning! Where do we get your pumps from and what price please?

[@davidkneale7455]

Looks good, I take it there is no need for Surrey flanges etc?

[@alandwright2]

There is no need for a surrey flange. They work better without one.

[@davidkneale7455]

I'm going to try them Alan. Is it the same pump for heating and showers?

[@alandwright2]

@@davidkneale7455 It is NOT the same pump for heating and showers. I sell radiator boosters for radiators and SPBs for showers and taps.

[@kassiefairbanks7008]

Do you have a market in the USA. This looks like just what we need!

[@alandwright2]

I am sorry but until we can enter a licence agreement with a manufacturer in the USA I cannot sell to you.

[@gixxis3264]

Nice, design recently installed this in line to a sink and the pressure increase is negligible., I was hoping that with 1 bar advertised it'd be blatant. Installed with no leaks & I have to say I'm not getting the pressure others are getting in their videos. The install is about 1m away from the tap due to the moronic install throughout the building I'm working in., vinyl floor with no access to the pipework beneath 🤦 States it can be installed anywhere within a feed? Is this true? Thanks

[@alandwright2]

The SP2B is a single boost 0.5 bar pump pump and a SP21S double boost (0.5 + 0.5 = 1.0 bars). If there was not a lot of difference then if you let Flowflex have details of the installation and flows before and after we can look to see what is going on.

[@itfcdan9223]

Hi Alan, Just down the road from you in Thetford. I have a ‘power’ shower which is gravity fed for cold (tank in loft) and cylinder fed for hot , I’m having the cold swapped over from the gravity tank feed to a cold water mains for pressure reasons and I was going to install a pump on the hot water , which model pump do I need ? It’s 15mm copper and would be installed in the airing cupboard.

[@lostunsunghero]

Can I fit this to a single shower in an unvented indirect system. I have a megaflo eco solar PV ready 300l unvented indirect cylinder. Pressure to all other taps in the house is fine, it's just this one shower, I suspect it's low because it has multiple jets.

[@alandwright2]

I design the SPB to give a single good tap or shower flow. If you have many showers each one needs a pump. If each jet had a pump then it would work.

[@lostunsunghero]

@@alandwright2 Thanks, I should have been clearer though. The shower takes in the water flow from the hot and cold and then diverts it from the main unit via the internal mixer, there would be no way to install the SPB to each individual jet as it's all controlled by the main unit. Fitting to the inlet feeds would solve my problem, I just don't know if your product is suitable for unvented systems.

[@alandwright2]

@@lostunsunghero We sell lots of SPBs to people with unvented cylinders however for your shower I think it needs a lot of water. The ShowerPowerBooster is an amazing device, it can boost any and all plumbing systems, but it cannot perform miracles. The SPB will always fix a pressure problem but if you simply want a better shower flow and you already have a good shower or tap flow the ShowerPowerBooster will recognise you already have a good shower and deactivate. showerpowerbooster.co.uk/wp-content/uploads/2023/03/FlowflexShowerManual_21_03_23-NEW.pdf

[@FynnsWorkshop]

Hi Alan, My plumber has told me this won't work for me as I'm wanting to feed mains cold and low pressure gravity fed hot in to a mixer shower and they will be imbalanced. Is he right or will one of these pumps solve my problems? My mains is around 2.5-2bar and I suspect going from the height of the tank above the shower I'll be getting less than 0.1 bar from the hot (without this pump).

[@alandwright2]

If you have mains pressure cold then you are better to double boost the the hot with a SP21S. showerpowerbooster.co.uk/product/sp21s-pair-shower-power-boosters-double-boost/ Each pump is a half bar pump so two half bar pumps in series gives you 0.5 + 0.5 = 1 bar. Most shower mixers will work with a hot vs cold imbalance of up to 5 to 1 so the mixer will be balanced enough to work perfectly. A SP21S IS PERFECT FOR YOU.

[@michaelbarrettorg]

Would this work as a stratification pump for a system with a Willis (Tesla) water heater.

[@alandwright2]

It would work but not as well as the new stratification pump I invented - Pat Pending and still under wraps.

[@terik555]

the water pressure where I live is about 60psi directly from the city main water supply . I have lower pressure in one of our bathroom showers....will it boost our bathroom shower pressure more...... even though our existing main city water supply is at about 60psi already

[@alandwright2]

If you have 60 psi this is over 4 bars pressure. This is much higher than normally provided in the UK where the mains pressure is typically below 2 bars and could be as little of 1 bar. A double boost SP21S will add 1 bar but with 4 bars to start with a 25% increase in pressure will only add 12.5% extra flow. However, I strongly suspect that mains pressure is not your problem and its a capacity problem. My pumps only help if it is a pressure problem so adding pressure is unlikely to help.

[@antoniostrig374]

Hi Alan, can I fit this safely to a combination water tank? My only concern is that the cold tank is 20 litres only and the hot is 80 litres. I am worried that the cold will not have enough time to refill. Thanks

[@alandwright2]

The SPB works very well and will boost any combination water tank. Google SHOWERPOWERBOOSTER FORTIC TANK. and you will find a detailed explanation of why it works so well with these tanks and what you can do.

[@keepgoingism]

Fantastic, just what I need. However are they a standard UK fitting size? As in Ireland our 15 & 22 is different??

[@alandwright2]

Just buy some olives at your local plumbers merchant. Swap the 15mm olives for 1/2 inch olives or the 22mm olives for 22mm to 3/4 conversion olives and they work perfectly in Ireland. Call our customer service team if you want further help

[@terik555]

ty for the honesty and information

[@molehead2k7]

if this works your the freaking man alan!!

[@kash5577]

Hi, does the pump vibrate? As I've came across one. And it does, seem to be doing anything. I even bypassed the switch, and plugged it direct, to get air out. But still nothing.?

[@alandwright2]

I can go through some diagnostics with you if you contact me through the website www.showerpowerbooster.co.uk/

[@JT-tk4me]

Hi Alan. Before I buy. Can I fit one to my system. I have a combo oil fired boiler. Thanks JT

[@alandwright2]

We normally recommend a double boost for combination boilers. You can fit one to your system but please read my latest blog first:- showerpowerbooster.co.uk/blog/adding-a-pump-to-boost-a-combination-boiler/

[@pmjnugent]

I have very poor water flow to the hot taps in my bungalow. I have mains on cold and gravity on hot. As my plumbing is old and inacessible I was thinking about using this on my hot supply. Would this be a solution? I was a bit concerned about the overall water flow.

[@TheAtticusFinch]

Hey Guys. My boss bought one of your SP2B boosters in 2014 @ the R.D.S homeshow in Dublin. Alas, he never actually fitted it, and now it has come into my possession. It has never had water running through it and I'm wondering if it would still be safe to use now. Any thoughts?

[@alandwright2]

The pumps have been improved upon many times but the 2014 model was still good and should work fine.

[@richardrobinson7645]

Can I fit this on a negative head shower set up? Will it fit on the 3/4 inch hot water feed for the whole house?

[@alandwright2]

Yes you can fit it on a negative head set up and yes it will fit on a 3/4 inch feed for the whole house. Email me on [e-mail] and I will send you links to what you need.

[@hyperhype1000]

Does this work with combi boilers? And also connect via 12 volt draw from a light in my bathroom as I have no power sockets in there.

[@alandwright2]

Yes they will work with Combi Boilers showerpowerbooster.co.uk/information/you-can-fit-a-pump-to-boost-a-shower-or-tap-on-a-combi-boiler-system/ You can take the power directly from the light in your bathroom but I suggest that plugging the transformer into a plug socket in another room and using a 3 metre cable might suite you better. Just drill a small hole to push the cable through to the bathroom? showerpowerbooster.co.uk/product/2m-extension-cable/

[@garrygemmell5676]

Can you use this to increase the cold water mains pressure to an electric 9.5kw shower - Other Plumbers say you should never fit a pump to anything mains fed?

[@alandwright2]

It is legal and safe to boost up to 12 litres a minute and the design of the SPB limits the flow to about 8 litres a minute. You can boost the pressure to an electric shower but if your shower already has 1 bar of pressure then giving it more pressure will not help as a 9.5 KW electric shower will only heat 4.5 litres a minute to 42 degrees centigrade and it will close down the flow (use this link to read more showerpowerbooster.co.uk/electric-showers/showerpowerbooster.co.uk/electric-showers/

[@jameshawkins5280]

Hi can this be connected on the 22mm draw off of the top of the cylinder or or does it have to be after the expansion to the tank in the loft

[@alandwright2]

Hi James - Please download our latest instruction manual using this link showerpowerbooster.co.uk/blog/new-showerpowerbooster-manual-for-2022/

[@willblake1012]

Hi Alan, will this work on an electric shower if you are to add it in to the water pipes and plugged up

[@willblake1012]

Sorry i forgot to say we do not have a hot water boiler in the property as it is a cabin

[@alandwright2]

@@willblake1012 This guide might help you:-showerpowerbooster.co.uk/blog/will-it-improve-an-electric-shower/

[@34136TS]

Alan - help! I'm on a narrowboat. I have a cold water tank with a DC pump to provide water pressure. I have an expansion tank branched off the hot water output set at 3.6 bar. Can I insert the booster on the tap side of my hot water tank to boost shower pressure? If I insert it into the shower mixer's hot feed pipe then I assume it will still boost all hot water taps on the system or only the shower i.e. what's beyond the pump? Very much obliged, Steve

[@alandwright2]

You are correct. In summary a ShowerPowerBooster fitted to any pipe will add pressure to the water flowing in that pipe so if that pipe boosts just one shower then it boosts the pressure to just that shower. If that pipe supplies lots of taps and showers then it adds pressure to all those taps and showers but is only really effective if you use one shower or tap at a time. The amount of boost you get depends on if you single boost with a SP2B or double boost with a SP21S and the rule of thumb is that whatever your pressure was to start with, if you increase the pressure by 100% you increase the flow by 50%. If you contact me through the web site and explain your problem then I can advise further.

[@34136TS]

@@alandwright2 Good morning to you Alan! Help... again! On the narrowboat I've tried the pump on the hot water feed to the bath shower/mixer... but as the water system is all pressurised by a Jabsco water pump and a hot water accumulator the little pump can't drag extra water through the main pump to feed it, so once the "credit" in the accumulator has been used the flow reverts to that of the main feed pump only. But, I got to wondering... if I fitted your pump between the fresh water tank (ambient pressure) and the main pump I just wonder if it would boost the overall rate that way?

[@alandwright2]

@@34136TS The Jasco water pump is a 'diaphragm pump' and my SPB is a centrifugal pump single impeller pump. It will not boost the flow through diaphragm pump. It will increase the pressure but the Jasco pump is not keeping up with the flow rate of the shower so the SPB is being starved of water. A second Jasco pump side by side with the pump you already have might do it? I am sorry that I did not ask the type of pump you had when I replied previously. If you bought the SPB through showerpowerbooster.co.uk/ there is a 30 day money back guarantee (if you find it does not work in the application you wanted). I am curious as to why you have a problem in the first place. Please contact me through the web site if you want to discuss this further.

[@michelzahar1092]

Hi Mr Alan , Do u have an Agent in Lebanon ?

[@forrishi]

I already have a pump(not the one from the video) but still my power shower mixer shower doesn’t have pressure. Any thoughts on them?

[@alandwright2]

It is difficult to comment on why a competitors pump is not working but let us know what your situation is and we can advise further. Cut and paste this link into your search bar. showerpowerbooster.co.uk/blog/five-star-buying-advice-from-showerpowerbooster/

[@campervanbuilder]

Hi Alan, if I fit two of these between a bathroom sink and bathtub with mixer tap and power shower will they activate when the bath taps are turned on? When other taps in the house are turned on do this activate? Thanks

[@alandwright2]

If the pump is fitted on a pipe which feeds several taps then opening any one of those taps will activate the pumps. Please refer to the installation manual for how and where to fit a shower power booster (here is the link) showerpowerbooster.co.uk/wp-content/uploads/2019/07/FlowflexShowerManual_2021.pdf

[@campervanbuilder]

@@alandwright2 Thanks. That's a pity. May aswell go for conventional pump if having to plumb new pipes. Nice idea though. Congratulations.

[@alandwright2]

@@campervanbuilder The SPB fits on existing pipes so why do you think new pipes. A conventional pump needs to be fitted by a competent plumber . Send an email to us at the showerbowerbooster.co.uk web site.

[@campervanbuilder]

@@alandwright2 Hi Alan, what i meant is, to prevent the pump motor activating when my bathroom sink taps are turned on separate pipes would need to be plumbed from cold and hot tanks to shower/bath mixer, just like twin impeller. My bathroom sink taps are on same feed as bath/shower mixer. Sink taps have decent pressure. The shower and bath are new and I have found that they need a boost. Thanks

[@alandwright2]

@@campervanbuilder I assume you already pipes to the shower and bath but why do you want to run a bath at the same time as you shower. If someone came into the bathroom as you were having a shower and decided to run the bath at the same time then is that a real senario? Why would you wash you hands at the sink same time as having a shower?

[@berbababy]

Hi, I have a newly installed unvented system, with a megaflo type hot water cylinder. We used to have traditional gravity fed system, and each bathroom had pumps on the showers. Now that we're on the unvented system, we've found that we can only have one shower going at once and of someone flushed a loo or opened another hot or cold tap, the shower gets affected. Can we install this pump on the cold mains feed coming into the house?

[@berbababy]

Plumber is guessing that mains flow rate isn't very good, but the pressure is very good so I can't understand why two showers at once wouldn't be ok.

[@alandwright2]

Hi Marco, huge apologies for missing your comment! If you have any queries on installing the pump, we have an amazing customer service team who are happy to help! You can contact them on [phone] or email [e-mail]

[@calderjack7818]

Should never install unvented cylinder on less than 20L per min flow rate. Your installer f***ed up

[@berbababy]

@@calderjack7818 Did I tell you my flow rate?

[@paulshanesmith]

There's a market out there for using these in campers and caravans, just not at 22mm

[@alandwright2]

The ShowerPowerBooster Pumps come with 3 part reducers to fit 15mm as standard. They are bought by some customers for camper vans and caravans and camping in general. I have a new submersible version of the pump which I advertise as a 'automatic garden booster'. To buy one use this link:-www.wrightpumps.co.uk/product/12-volt-garden-leisure-pump/

[@paulshanesmith]

@@alandwright2 hi Alan thanks for the suggestion. My campers warm water tank is at floor level so I effectively I have a 1.9m negative head shower system. I want to buy British so I was going to give the SP1 a try. Do you think I'll get at least 5 litres a minute through 15mm pipe at 1.9m head with that pump? Cheers

[@alandwright2]

@@paulshanesmith Hi Paul, At 1.9 negative head a SP1 will give you 5.4 litres a minute without dynamic resistance. The SP21S would give you around 6.5 litres a minute with dynamic resistance and you could get a negative flow fully automatic pump solution. I think a SP21 would suit you better but email me at [e-mail] and I can put together a bespoke package.

[@paulshanesmith]

@@alandwright2 I've just test benched the recently purchased SP1 pump connected exactly as it will be inside my camper project and it works brilliantly. It's exactly the right amount of flow for a decent shower and unlike typical pumps used in the camping community yours is very quiet and doesn't need an accumulator. Very very pleased. Thanks

[@leonardomanon8107]

How can I buy one in the USA?

[@alandwright2]

I am sorry but the USA and Canada have Trade Barriers which prevent competition from UK products. The only way to get a SPB in the USA is to get delivery to any address outside the USA and having it sent on.

[@leonardomanon8107]

@@alandwright2 Thanks Alan

[@leonardomanon8107]

@@alandwright2 How much will it cost? If you send to the Dominican Republic?

[@alandwright2]

@@leonardomanon8107 The price depends on what you need and all export orders are sold through this site www.wrightpumps.co.uk/blog/export-sales-of-shower-power-booster/

[@Labjunkie83]

Is this for sale in Ireland

[@alandwright2]

We sell lots of these pumps to Ireland.

[@ghostmonk9341]

Shower Power Booster - Go on ebay...

[@fishyc150]

Does this remain on and only kicks in when you turn the tap or need to turn on and off when used?

[@alandwright2]

Yes, The SP2B, SP22S, and SP21S are fully automatic.

[@fishyc150]

@@alandwright2 that's great, thanks 😊

[@LabRat6619]

Tried one of these pumps and it didn't improve. Put two inline and it still didn't work well. I was eventually thrown out of the house by my customer, without pay!

[@alandwright2]

Each pump will have added 0.4 bars pressure so you will have had the equivalent of mains pressure (0.4 bars plus 0.4 bars pus whatever pressure you started with). Please contact Gemma to discuss.

[@josht8288]

How is 0.4+0.4+ whatever you stated with equal to mains pressure mains water pressure is normally 3-4 bar in most of the UK. You would need a heck of a lot of head of pressure to get that 20-30 metres in fact.

[@alandwright2]

@@josht8288 Service standards which are agreed with Ofwat that require a minimum supply pressure of 7 metres head (approximately 10 psi or 0.7 bar) , measured at the point where our communication pipe joins your supply pipe.