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Product Details

3 in 1 system protector. Dissolves contaminants to a minute size and floats in the system. Provides long term protection. Easy to use and add when cleaning is not appropriate.

Technical Specification
Brand Calmag
Safety Data Sheet click here
Safety Data Sheet click here
Delivery details

Covid-19 Update

  • Free Next Business Day delivery for orders over £25 to home and site is available for orders placed before 5pm
  • Saturday and Sunday delivery is now available for orders placed before 4pm on Friday for Saturday delivery and 4pm Saturday for Sunday delivery, see here for details
  • We have temporarily suspended our Pre-12 delivery service
  • Once your order has been dispatched you will receive an invoice email with the courier details and your tracking number
  • Alternatively go to MyAccount, click on your Order History, click on the TRACK icon to link through to the carrier website and the tracking details for your delivery
  • If your order contains more than one item it may be split into two deliveries as we manage volume across our network
  • Due to carrier constraints it is not currently possible to deliver age restricted items. Please use our Click & Collect service for these products
  • Delivery direct from suppliers is now available and specific delivery times will be displayed on the product page
Order Value: Under £25 Over £25 but less than £75 £75 & Over
Next Business Day Delivery (Mon-Fri) usually before 6pm £5 Free Free
Pre-12 Delivery before 12 noon Next Business Day £10 £5 £5
Remote areas standard delivery (2-4 days) £5 Free Free
Saturday Delivery order by 4pm Friday £10 £5 Free
Sunday Delivery order by 4pm Saturday £10 £5 Free


Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details

Covid 19 Update

Click & Collect

  • Safe contactless collection is available 7 days a week at our branches
  • Our branches are open 7am-5pm Mon-Sat and 9am-4pm Sun
  • Keeping our colleagues and customers safe and well and respecting stringent social distancing requirements is our number one priority – 2 metre rule enforced
  • Our available product range will not require more than 1 person to lift
  • Please see our guide to click and collect below

  • Please ensure that your mobile number is added so that we can text you when your order is ready to collect

Call & Collect

Due to current trading conditions we have suspended our Call & Collect service until further notice.

If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 7pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Reviews
Central Heating Cleanser / Descaler & Inhibitor is rated 4.9 out of 5 by 56.
Rated 5 out of 5 by from Less boiler issues. Great value and it stays in the system.
Date published: 2020-05-26
Rated 5 out of 5 by from Easy to use, works straight away Really easy to use, and starts working quickly (added to header tank and left overnight). Next morning the timed start was quieter, and continues to get better as time goes on. You can dose the radiators directly, and you can just leave it in the system, no flushing.
Date published: 2020-05-08
Rated 5 out of 5 by from Calmag Central Heating Cleanser/descaler/inhibitor Used this product before, and well impressed.Keeps system clean, and removes scale.Very good value against similar.
Date published: 2020-04-12
Rated 5 out of 5 by from excellent additive very good all round product, have used before and was very impressed with the way it silenced the boiler and cleans and protects.
Date published: 2020-03-23
Rated 5 out of 5 by from Excellent Bought and added to my system, and no need to flush out, as you have to with other cleaners.
Date published: 2020-02-23
Rated 5 out of 5 by from Excellent combination product Having had my heating system partially drained following a boiler repair, I chose this product based on the previous positive reviews. I have a gravity fed system, but rather than pouring the bottle into the header tank, I chose to add half the product through the MagnaClean filter reservoir. Then a week later, I added the second half the same way. The difference is noticeable. Within a day, the system was noticeably quieter, and now two week later, I no longer have to vent the system either. Good value. Very pleased.
Date published: 2020-01-26
Rated 5 out of 5 by from Excellent product Been a heating engineer for 35 years, this is by far the best protection in a bottle for your heating system, does what it says on the tin, and can be left in the system. Why waste hundreds on fancy power flush machines, when you can use this excellent product!
Date published: 2020-01-12
Rated 5 out of 5 by from Excellent Long Term Use Long Term Use of this is excellent no wonder it is used by so many plumbers in the trade
Date published: 2019-12-06
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