Tackles Limescale.
Protects your
home and your pocket.

Limescale affects your pipework, boiler, radiators, taps, appliances and fittings and can lead to increased repairs or early replacement costs.

McAlpine Scale Defender can save hundreds of pounds as it keeps your heating system more efficient and helps prolong the life of pipes, fittings and appliances.

Instruction manual See How it works

Did you know?

A 1mm layer of limescale in your boiler can amount to an extra £150 to £200 in household bills every year.

Figures from the Carbon Trust

Product Features

Scale defender can protect your whole house

Watch out animation on how scale defender protects your whole home.

Watch full video

Scale DefenderTechnical Specifications

Dimensions (WxDxH): 115mm x 75mm x 210mm
Connections: ¾” Male BSP with 15mm & 22mm fittings
Weight: 0.45 kg
Working pressure: 0.5 – 10 Bar
Test pressure: 25 Bar
Temp range water: 1˚C – 40˚C
Water flow rate: Max 3000 L/hr
Pressure loss head max: ± 0.3 Bar
Lifetime dosing cartridge: Up to 40,000 Litres
Lifetime prefilter: Easy Clean
Dimensions (WxDxH):115mm x 75mm x 210mm
Connections:¾” Male BSP with 15mm & 22mm fittings
Weight:0.45 kg
Working pressure:0.5 – 10 Bar
Test pressure:25 Bar
Temp range water:1˚C – 40˚C
Water flow rate:Max 3000 L/hr
Pressure loss head max:± 0.3 Bar
Lifetime dosing cartridge:Up to 40,000 Litres
Lifetime prefilter:Easy Clean

Easy to fit

Scale Defender should be fitted by a plumber, but at between 45–60 mins to fit it should only be an hours call out. Thereafter, it is easy to replace the cartridges, and the system requires no ongoing maintenance.

Dont just take our word for it, this is what our customers have to say

“Easily installed. Early signs are that it’s doing the job it is designed for. Thus no lime scaling of expensive plumbing and heating parts.”

What is Polyphosphate?

Polyphosphate is a food-grade (consumable) product approved by the World Health Organization and Food and Agricultural Organization. It is widely used today in the food processing industry for cheese, meat, wine and other products.

Scale Defender technology is a completely safe way to treat water in the home and is safe for human consumption according to the WHO and FAO recommendations and in accordance with the international norm for drinking water to the EC regulations, standard (EN 1212) and British Standard BS EN 1212.

Starter Kit and Refills Cartridges

Starter KitCode: SCA-STA

Includes Scale Defender unit,
cartridge and 15mm and 22mm connectors.

Refill CartridgesCode: SCA-RE

Includes 2 refill cartridges for the
Scale Defender unit.

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