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Race Glaze
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Race Glaze Water Filter

Refillable Long Life Water Filter System for no water spots after washing your car - never dry it again !

Refillable Long Life Water Filter System7 Litre 0ppm car washing water wherever you live – for £99.95

  • Leaves absolutely no water spots -even without drying off
  • Connects to your hosepipe or pressure washer effortlessly
  • Use to fully wash or just final rinse
  • Typically produces c.410 litres of pure filtered water*
  • Refillable with new filtration resin granules – so lower cost long term than other systems
  • Supplied ready to use, complete with resin granules
  • Free water hardness tests
  • Fits in-line between your tap and hose
  • No loss of pressure, even with pressure washers
  • 7 litre capacity, weighs 5kg, 50cm total height
  • Shipping to N. I. extra £15
  • £99.99 inc VAT [Add To Basket]

14L Water Filter

Typical output of 1,100* L due to its super-efficient high aspect ratio. Per litre of water produced its approximately 25% lower cost per litre. Recommended for multiple car owning households. Same diameter, double the height.

Produces 2.75 times as much mineral-free water than the 7L unit at only 1.9 times the price.

£189.99 - [Add To Basket]

25L Water Filter

NEW - a larger capacity 25 Litre capacity Filter is now available. This should produce approx, 1,400* litres in an average hardness water area. Wider than the 7/14L, same height as 14L.

* Output levels quoted for hard water, typical in London, Hertfordshire, Bucks, etc

We’ve all had to swiftly run round our cars to dry them before water spots form, which are very hard to remove and can badly affect paintwork. And try as you might, washing and drying will cause swirl marks and light surface scratching.
Existing in-line water filters are either very expensive or have incredibly short lives, and can waste the casing, which is very environmentally unfriendly. For example, the AquaGleem filter is 2.5 litre capacity, typically retails at £65. That’s 60% more expensive than our 7L unit per litre of water produced!

The new Race Glaze Maxi-Filter uses a durable European-made fibreglass tank ready filled with premium A1 grade resin (note: some budget filters use sharps – broken reject resin) and comes ready for you to add standard Hozelock-type connectors to begin use immediately. The tank is pressure tested under TUV standards to over 10 bar.

Tap water enters the tank and under pressure and gravity is forced down through the resin bed to emerge on the outlet side as close to 0 parts per million (ppm) of dissolved solids as possible. We don't offer a 16ppm or 30ppm filter system as thats pointless - our filter gets as close to zero parts per million as possible so you don't get any water spots, even in hard water areas.

25 Litre capacity FilterUsing a hosepipe to wash a car uses approx. 30 litres of water (AutoExpress 21/3/2012), a final rinse only a fraction of that – we estimate 5-7 litres. Most UK users will acheive about 50-70 rinses, or about a year, before the refill is required (assumes 1 car rinsed per week). Resin keeps for a long time, as it has a 2 year shelf life, so buying spare resin immediately guarantees continuity.

We recommend that you run 2 litres of water through your filter every 2-3 weeks during the summer even if you're not using it, but there is no need to tip water out if using regularly. This prevents degradation of the resin bed. Store indoors against frost in winter, which can crack the unit if water inside freezes.

Tips to obtain maximum longevity from your water filter:

a) use it for a quick final rinse only, on half pressure - takes less than 1 minute

b) dont leave it running

c) dont use for your initial wetting or shampoo rinsing

d) pressure washers use more water - an open hose direct from the mains is most efficient

e) if the resin smells fishy, add 2 capfuls of bleach, shake and leave for a few minutes, then backwash by fitting connectors the wrong way round, for 2 minutes. This kills off bacteria caused by not using the summer or warmer weather.

Use this handy calculator to see how many litres of pure water your local supply will give you and how many rinses will result. Your water supply company website should tell you you rlocal water hardness.

Output Calculator for 7 Litre Filter (multiply the result by 2.75 for 14L filter results)

Enter water hardness here: litres (approx)

Example water hardnesses:

  • Central Birmingham - 80 ppm
  • Outer Birmingham, Kent - 270 ppm
  • London - 280 ppm
  • Southampton/Portsmouth - 320 ppm
  • For 'French' hardness figures, multiply by 10 to get the ppm figures

Image above: 7L (left), 25L (right)

A general average is 300ppm – though note that some other suppliers use 200ppm as an average. At 300ppm your initial costs with the 7L unit would be 25p/litre, when into refills only 10p/litre. Using an AquaGleem for example would cost 38p/litre every time, with no savings possible as the entire unit needs to be replaced.

When you think your output water does contain dissolved solids, just send us a sample and we'll test it for you and send the results by e-mail. This service is FREE to our customers. Or purchase one of our simple 'dip in' water hardness meters for £16.99 so you can do your own testing.


Maxi-Filter extras

                             Water Filter Safety Bracket                                7L & 14L filter             Easy Refilling Kit

Optional extras:

  • Water Filter Bracket: To safely attach the 14L and 7L filter to your garage wall. Heavy duty, study and durable. A quick self fit. £9.99 - [Add To Basket]
  • Male 3/4" Adapter for the in/outlets on the filter, connect to std Hozelock-style Hose end adapters (2 per filter required), £2.00 each Add To Basket
  • Hose End Connector , Hoselock style, £2.00 each (2 per filter required) Add To Basket
  • Water Filter Refilling Kit: A stopper for the top of the internal pipe and wide mouth funnel for easy, quick and waste-free resin refilling of any of our filters £9.99 - [Add To Basket]
  • Resin refill bag, 7 litres - £45 - [Add To Basket]
  • Resin refills sack, 25 litres - £150 - [Add To Basket]
  • Electronic dip in water hardness meter - £16.99 - [Add To Basket]Water Filter Connection kit
  • Water Filter Connection kit, illustrated on the right, a permanent solution for your filter - £5.99 - [Add To Basket]


          Male Adapter               Hose End Connector            7L resin Refill

The Meter is a simple ‘dip in’ tester for your water output to check when resin needs replacement, and comes with a 12 month warranty (HM Digital, TDS-3 model).

Five star customer reviews - we have plenty more too..

Initially dubious...
by Russell Du Lieu, Salisbury, 09 February 2016

I went for this product on the strength of the reviews but was still dubious about it being able to perform as described.
I washed my gleaming metallic black XKR (in the evening sun) and then rinsed it off with the 0ppm filter - and then walked away.
1hr later no water drops and no water marks, brilliant!

Most amazing gadget
by Garry Smith, Worcestershire, 16 October 2015

This is the single most amazing car cleaning gadget I have ever come across.
My business partner has just bought one too.
The reviews are true !

Simply Fantastic!!
by Daniel Cahill, Orpington, 30 June 2015

So the filter was delivered today, hottest day of the year so far, thought I'd give it a whirl on my jet black focus..... I must admit, I was apprehensive! No need to of been though, honestly I have never used a product so good!! The air temp must of been around 29 - 30 degrees, the paint work was even hotter and nothing, absolutely no water marks or anything, truly the best product I've brought as a detailing enthusiast! Excellent product and not to bad a price. Definitely worth buying!!!


By Sharon, 28 March 2016
Does exactly what they claim, pure filtered water, leaves no water marks even if you don't dry the car. Brilliant

An Australian review
by Liam Kalas, Sydney, Australia, 24 December 2015

I’m absolutely loving my filter, now that Summer’s hit Australia it’s a godsend being able to wash in direct sunlight and heat without fear of waterspotting, plus it’s cut out the drying phase of my wash routine therein reducing the chances of marring.

Sceptic convinced
by Steve Heidukewitsch, Mansfield, 07 September 2014

Brilliant product - no water spots, no need to leather off even in bright sunshine. When you see so many good reviews you get a little suspicious but the reviews are good because the product is great!

Exceeded my expectations
by David Chambers, Upton, Newark, Notts, 02 September 2014

It has been almost a years worth of using this amazing water filter the best £100 that you will spend on any cleaning product Porsche Basalt Black shows every water mark! But no fact a pleasure to wash the car now even in bright sunlight!!


Larger tank sizes are available on request.