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questioning man about boilers and water softeners

Can I Install a Water Softener with Any Type of Boiler?

Can I install a water softener with any type of boiler?

Monarch Water softeners are essential appliances that help combat the negative effects of hard water by removing the minerals calcium and magnesium. Many homeowners wonder if they can be installed alongside any type of boiler.


Understanding water softeners:

Before delving into the compatibility aspect, let’s briefly review the function of water softeners. These products work by removing the calcium and magnesium through a process called ion exchange. This exchange reduces the mineral content of the water, preventing the formation of limescale and minimising the potential for scale-related issues in plumbing systems and appliances.


Discover the benefits of soft water:

Save up to £600 a year on hard water costs by spending significantly less on energy costs (up to 24%), cleaning products, detergents, shampoos, and soaps. To explore the full benefits, click here.


The rule is that:

Any home can have a water softener fitted, no matter what type of heating system it has.

Leading boiler systems manufacturer Worcester Bosch supports this position, you can click here for more information on their site.


Anything I need to know?

You can have a Monarch water softener in combination with any boiler, as it will prevent the hot water circuit from scaling up and losing efficiency. However, the central heating circuit should be filled with hard water and a chemical inhibitor. This can be done by using the water softener bypass when filling or topping up. Alternatively, the filling loop feed can be connected upstream of the water softener.


Important considerations:


Flow rates:

Flow rates can be a critical factor when installing a water softener.

It is important to ensure that the softener you choose is compatible with the required flow rate of your boiler to prevent potential issues. Monarch water softeners have some of the highest flow rates and lowest pressure drops available on the market today.


Installation location:

The placement of the water softener is also important. It is recommended to install it in a location that allows for easy access and maintenance, with adequate drainage and an electrical supply if needed.


Water Hardness level:

We recommend installing a water softener in all areas where the water supply is hard.

You can check the level of hardness in your water supply by clicking here and then by using our handy product selector, decide which product will be suitable for you.


Regular maintenance:

Regardless of the boiler type, both the boiler and the water softener require regular maintenance. Adhering to manufacturer guidelines and scheduling periodic servicing will ensure optimal performance and longevity.

Re-Introducing — 
the Midi HE Softener

The Midi HE is the UK’s best-selling softener in the merchant channel and the number 1 choice for UK installers. The WRAS-approved Midi HE is high efficiency and provides the ultimate protection against limescale.

Monarch Champions — 
People you can trust

We’re so confident our products will meet your needs that we’ve assembled a group of existing customers – our ‘champions’. Our advocates will directly answer any questions you may have, from installation to living with a Monarch Water product.

Ecologi —
Climate action at your fingertips

Simple and impactful ways to collectively reverse climate change.

The Eczema

Monarch is the perfect partner for The Eczema Academy, offering a multitude of sustainable, WRAS-approved water treatment products that can help alleviate skin conditions, such as, eczema. Carolyn Akinyemi, founder of the academy said: “We are extremely happy to be working alongside Monarch – a reputable and innovative company that offers a number of softening and filtration solutions, which are key components in the effective protocols for the relief of Eczema”.

Together, Monarch and The Eczema Academy aim to educate people on how they can help relieve and control their Eczema. Ian Flack, Monarch’s head of sales said: “We are proud to be supporting Carolyn and The Eczema Academy. We are looking forward to working closely with her going forward to help convey the benefits that soft water can bring to those affected by eczema”.

If you would like to find out more about The Eczema Academy, visit or email

Keep up-to-date with all the latest from The Eczema Academy by subscribing to their YouTube channel here.