For limescale protection of Thermal Store hot water cylinders
- and also small homes/apartments*
*For larger homes, choose an alternative LimeStop. See above link buttons
Buy it now - £125.00
Don’t forget to choose the correct size you want - 15mm or 22mm...
15mm LimeStop TS
22mm LimeStop TS
LimeStop TS FAQs...
What’s the cost?
£125.00 including delivery (to UK mainland only).
What’s the installation cost?
We charge £75 for a typical installation (sorry, RG postcode area only). Many plumbers
will charge you less than that, and you can fit it yourself.
What is the LimeStop TS?
The LimeStop is a limescale inhibitor – it inhibits limescale from forming. Some
people call such devices ‘water conditioners’.
The majority of limescale inhibitors don’t work, do they?
No, they don’t. Many such devices use magnets, electrolytic action, or electronic
waves. If they worked, then the manufacturers would offer you your money back on
performance...but they don’t! Here’s the ‘guarantee’ on a popular-selling ‘limescale
“We guarantee that your ********** will work for you. If you are not
satisfied with the performance after 3 months continuous use
please contact us within 30 days of the end of this period”
Really? Four months? It follows then that after just four months, when you find that
this product (which costs more than £100) doesn’t actually work, then you won’t get
your money back! Here’s another...
“If after six months of continuous use, you are dissatisfied with the
performance of your water descaler, you may return it for a full refund”
Again, after six months you’ll be unlucky when you discover it hasn’t worked! What
good is this? If it really did work, then the manufacturer would surely be happy
to give you your money back no matter when you made your claim?
So why is the LimeStop TS different?
The LimeStop uses Siliphos - silicate-polyphosphate, so it’s classed as a ‘physical’
limescale inhibitor, in that it actually uses something to inhibit limescale – there
are no smoke and mirrors! Siliphos is remarkable stuff - able to positively halt
Is that why you guarantee it?
Yes, if you research ‘limescale inhibitors’ (on the internet, or even by phone) you’ll
find that manufacturing companies of these devices will NOT give you your money back,
years down the line, if they don’t work! WE WOULD. We can offer such an amazing guarantee
because Siliphos really does work, even in very hard water.
LimeStops have been installed in most parts of the UK, and have been sold in France,
Spain and Belgium.
What are the dimensions of the LimeStop?
It’s compact at just 200mm x 70mm (approx 8 inches x 3 inches).
What does it weigh?
What’s inside that inhibits limescale?
Siliphos - a food grade material called silicate-polyphosphate.
How does it inhibit limescale?
As water flows through the LimeStop it flows over the spheres of Siliphos - and they
give up a slight amount of their coating. Siliphos inhibits limescale in two ways.
First of all it makes the calcium molecules stay in suspension, rather than stick.
Secondly it lays down a layer of silicate-polyphosphate on the walls of pipes etc.
This too helps to inhibit limescale sticking.
How much Siliphos is in there?
900 grams (100 grams more than our closest rival product!).
Why that particular amount?
Because around 900 grams is the optimum amount to ensure limescale inhibition in
the average thermal store or smaller home.
Does it remove limescale that is already present?
Yes, but it takes time.
Should it be fitted either horizontal or vertical?
Either, but refer to the installation instructions.
Does the Siliphos 'run out' of its effectiveness?
It degrades, that’s why replacement is required in two years. We will send you a
So what will be the continual cost of the LimeStop TS?
Just 15p a day! The cost of replacement (every two years) is just £113.00 including
Is it a straightforward swap?
Should I use a plumber to do that?
You could, but it really is very easy - you just need a spanner suitable for the
connections. We explain exactly how to do it below, but it really is a 5-minute job!
Is the water drinkable?
Yes, Siliphos is a non-hazardous, food-grade material. It conforms to EN1208:2005
and WHO standards for drinking water supplies. Unlike artificially-softened water,
it's safe for babies too.
Do you supply a ‘check valve’ anyway?
Yes, we do. It’s in the box.
Is it classed as a water softener?
No, the hardness is still there, it's just suspended. This is true of all limescale
inhibitors; if a water conditioner doesn't actually remove the calcium, then it's
not a water softener.
If the treated water is then stored, will it still be effective?
Yes, but the sooner the stored water is used, the better.
I don’t have a 15mm mains water connection
No problem, a 22mm version is available for the same price - just choose it above.
If the treated water is then stored, will it still be effective?
Yes, but the sooner the stored water is used, the better.
Can you supply an even-bigger version to protect a larger home?
Yes, we can, and it’s just £132.00 (free postage). It contains a whopping 1,200 grams
of Silicate-polyphosphate, and if you want one, look for the ‘LimeStop’. It comes
in 15mm or 22mm, and requires replacing every two years at a discounted price of
just £113.00 (free postage).
What do I need to install it?
You’ll just need some simple fittings, copper tube, a tube cutter, and basic tools
- we’ll help you all the way.
Your instructions say not to fit the LimeStop TS too close to a heat source, why?
Warm water backfeeding down the supply will degrade the Siliphos. Its period of effectiveness
would be less.
Is it easy to fit?
Yes, very. Fitting should take no more than 30 minutes.
What if there is hardly any pipework to fit it on?
That’s no problem. All you need to do is re-locate the LimeStop away from the piping.
You can route the piping both to and away from the LimeStop with flexible hoses,
so you really need just over 3” of piping.
Can I fit it in a cupboard?
Yes, but not if the ambient temperature is above 30 degrees C for the same reasons
as above. Also, fit it low down in the cupboard where the cold mains enters, as it
would be the coolest part of the cupboard.
Will I still get limescale around my showerhead?
Most possibly, yes. This is because although that the Siliphos-effect will stop your
shower scaling-up, 'still' water (water that doesn’t move) will be left on the showerhead
and around taps etc. The effect will be lost and deposits may well occur. But these
can simply be wiped away, as the deposits aren’t sticky.
What will the LimeStop TS protect?
The LimeStop TS is made for ‘mains’ water appliances, such as mains-pressure thermal
store hot water heaters, like Gledhill heaters, and also for small homes or apartments.
If you have more than two bedrooms, then we recommend the larger LimeStop instead.
What about ‘Megaflow’ type units?
These use a store of hot water, but they are technically ‘heat banks’ and not thermal
stores. We can only state that the sooner the water is used after running through
the LimeStop, the better. The LimeStop TS is perfect to protect thermal store hot
water cylinders, that’s why it’s called ‘TS’!
What size ports has the LimeStop got?
The LimeStop is supplied with either 15mm or 22mm fittings - you choose.
Will my water pressure be reduced?
The LimeStop is a through-flow unit, and you would not see any noticeable drop in
water pressure or flow after fitting.
Will the LimeStop withstand high water pressures?
Yes, it is a very robust unit.
What is limescale?
It's dissolved rock. Rain water dissolves the calcium and magnesium out of the rock.
This water is then treated and sent to your home. When the water is heated the dissolved
particles re-solidify and stick to the walls of the heat exchanger. It will do this
at low temperatures, but really begins at anything above 63 degrees C.
Is limescale harmful?
To your heating appliances, yes, very! Even a tiny coating of it will reduce the
efficiency of your appliance, meaning your energy bills will be higher. It also causes
premature failure of key components. However, to your body, it is beneficial. Remember,
water softeners remove this beneficial calcium, the LimeStop doesn’t.
Why is the LimeStop TS better than other limescale inhibitors?
The LimeStop requires no electricity or maintenance. It doesn't use questionable
electromagnetic waves. It uses a time-proven material that we feel good enough to
offer our performance guarantee of your money back. And you don’t have to fiddle
with large 'O' rings and wet Siliphos - you simply replace it. You may be aware of
a very similar unit to ours, but it requires 6-monthly topping up, with annual cleaning
and Siliphos replacement.
*Do you guarantee that the LimeStop TS works?
Yes, we do. Our guarantee is that stated formally to the right of this webpage. We
believe all limescale inhibitors should carry a performance guarantee. Don't buy
one that hasn't got a money-back guarantee.
Have you ever had to give anyone their money back due to re-scaling?
How can I get one?
Just click on a ‘BUY’ button above. Any questions, simply email us.
Do you give a discount if I buy more than one?
Yes, of course, just email us.
I have soft water, so surely I don’t need a LimeStop TS?
The LimeStop can even be used in soft water areas, as the Siliphos lays down a protective
coating on the walls of the supply piping - thus preventing acidic-water attack and
so-called ‘Blue Water’.
Why don’t you sell the LimeStop TS in plumber’s merchants?
Because by the time they have added their mark-up charge, it would make it too expensive.
You get it at the cheapest possible price by buying direct from us. It should arrive
within 2 days by courier.
Let us know if you find ANY other manufacturer of a ‘limescale inhibitor’
offering you anything like our amazing guarantee!
Made in Berkshire, England
Last update May 10, 2019
The guarantee against ‘scaling-up’ is dependent on the LimeStop TS being installed
for at least two years. If your thermal store (not heat bank) should ‘scale-up’ to
the detriment of water flow (we would require proof to satisfy such an occurrence),
then we would return the original purchase price (£125) to the original purchaser.
Your statutory rights are not affected.
Please be aware that items are usually sent by ParcelForce Express 48, which is a
2-day service, but this cannot be guaranteed.
Cancelling & Returns
Cancelling your order before we send it:
Simply contact us by letter or email to cancel - any money already taken will be
returned to your bank account by bank transfer within seven days. Our cancelling
policy is ‘no quibble’.
Cancelling your order after we have sent it:
If you have already been sent the product then we would aim to reimburse you within
seven days of us receiving the product back from you. Please note that under the
Consumer Contracts Regulations you do NOT have the right to return the product and
claim a refund if you have unsealed the box (due to hygiene reasons). However, if
the product is still in its sealed box, you have the right to return it up to 14
days after you receive delivery. You should send the product back via a reliable
courier, and in its original packaging. If you cancel before you receive the product
then obviously there will be no charges made. If, however, you cancel after the product
has been sent to you, then you are liable for the postage costs in returning the
product to us. You should retain proof of posting, but please be aware that it is
incumbent upon you to ensure that we receive it, so we would advise you to require
a signature of delivery. Your cancelling email/letter must include the following
(copy & paste):
I hereby give notice that I wish to cancel my order for the following goods...............
Signature (if letter sent)............................
We want to ensure that you are happy with our service, and that we have been fair
and professional. And we ask that you too are fair in ordering products from us.
Sometimes, packages go astray. We have to claim against the courier in such circumstances
(rare, though they are), and we would not be able to post you a replacement until
we get confirmation from the courier that the item has indeed been lost. We ask you
to be patient, and to work with us to resolve the problem. We would talk to you by
phone to reassure you, and keep you up to date with any information we have. We would
even give you the details of the courier to prove that the item had indeed been mislaid
The main alloying elements of stainless steel (chromium, nickel and molybdenum) are
all highly valuable and can be easily be recovered and separated from other materials.