Is this any good removing limescale in a hot water cylinder

Yes I have used this on an indirect hot water storage cylinder in fact there are instructions in side how to do this. The illustration of a hot water cylinder on the outside of the tub is what drew my attention. However what I did was turn off cold water supply to cold water header tank in loft then drained hot water storage cylinder enough to allow removal of emersion heater, the added weight of the water inside the cylinder helps with the removal of the immersion, then drained hot water cylinder enough to allow coverage of internal coil and added lime scale remover this I found allows a stronger solution to be added and allows you to monitor progress once de-scaled flush system thoroughly and re-assemble. Hope this helps.

Can this be used in central heating system

No, you need one specifically for central heating. This is for taps/ kettles etc

Can this be used to clear a blocked cold water pipe?

If the blockage is scale related then potentially yes - it could take some time and it may be easier and cheaper to cut and replace the blocked section. If it used then a full flush to ensure the chemical has completely gone out of the system will be required after the blockage has cleared - especially if potable/drinking water supply as the product is harmful to humans and environment if not used correctly and safely.

Fernox DS-3 How do you add it to hot water system?

Why would you do that? It then means you will have descaler coming out of your hot taps in the house. It won't make for a very nice bath. I use it to descale kettles etc. Use a tablespoon in half a kettle of water, boil and rinse several times before using.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

FERNOX DS-3 LIMESCALE Remover 2KG

Product ID: 51753756

Details

Brand
Fernox
Contains liquid contents
No
Item form
Granule
Item volume
2 Kilograms
Item weight
2 Kilograms
Number of items
1

⚡Fast-acting sulphamic acid formula

🌿Non-foaming, eco-conscious surfactants

🛡️Built-in corrosion inhibitors

33236 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

Description

🛠️ Say goodbye to scale, hello to efficiency!

COMPACT CONVENIENT - 2KG pack size with easy application—ideal for regular maintenance and emergency descale.
ECO FRIENDLY CLEANING - Non-foaming surfactants ensure effective descaling without harsh chemical residues.
VERSATILE DOMESTIC USE - Perfect for kettles, boilers, and other household appliances prone to limescale buildup.
APPLIANCE SAFE PROTECTION - Advanced inhibitors shield your heating systems and pipes from corrosion during cleaning.
RAPID LIMESCALE BREAKDOWN - Powerful sulphamic acid targets stubborn scale fast, saving your appliances from costly damage.

FERNOX DS-3 Limescale Remover is a 2KG professional-grade descaler formulated with sulphamic acid, corrosion inhibitors, and non-foaming surfactants. Designed for domestic appliances, it rapidly dissolves limescale while protecting your equipment, ensuring longer lifespan and optimal performance.

Specifications

ASIN	B006UI4HC8
ASIN	B006UI4HC8
Best Sellers Rank	24,605 in Grocery ( See Top 100 in Grocery ) 208 in De-Scalers
Brand Name	Fernox
Contains Liquid Contents?	No
Customer Reviews	4.5 4.5 out of 5 stars (65)
Customer reviews	4.5 4.5 out of 5 stars (65)
Delivery information	We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Guaranteed software updates until	unknown
Item Form	Granule
Item Volume	2 Kilograms
Item Weight	2 Kilograms
Item model number	DS-3
Manufacturer	FERNOX
Manufacturer	FERNOX
Model Number	DS-3
Number of Items	1
Package Dimensions	20.5 x 20.2 x 10.4 cm; 2 kg
Part Number	DS-3
Size	2 kg (Pack of 1)
Special Features	Removes limescale
Specific Uses For Product	Dissolving scale, Limescale remover
Surface Recommendation	Aluminium
Unit Count	2000.0 gram

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

33236 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews