Why “Mineral Bead” Shower Heads Are Causing Damage to Electric Showers A Guidance Note for Letting Agents and Landlords By Switch Electrical & Mechanical Services Ltd

Why “Mineral Bead” Shower Heads Are Causing Damage to Electric Showers A Guidance Note for Letting Agents and Landlords By Switch Electrical & Mechanical Services Ltd

Overview

We are increasingly encountering issues with electric showers failing prematurely due to the installation of aftermarket “high-pressure” or “ionic mineral bead” shower heads by tenants.

These products are widely marketed online as water-saving, pressure-boosting, or filtration devices. However, in practice, they are causing significant damage to electric shower units.

What Are These Shower Heads?

These are typically handheld shower heads containing visible mineral or filtration beads inside the head. They are often advertised as:

• “Ionic” or “mineral bead” shower heads • “Turbo” or “high-pressure” shower heads • Water-saving or filtration shower heads

While they may appear harmless, they are not designed to work with most UK electric shower systems.

The Problem – Flow Restriction and Back Pressure

Electric showers are designed to operate with a specific flow rate of water passing through the unit.

These aftermarket shower heads restrict the flow of water significantly. This restriction causes:

• Reduced water flow through the unit • Increased internal pressure (back pressure) • Excessive strain on internal components

As a result, the shower is forced to operate outside of its intended parameters.

What Damage Can This Cause?

We are seeing a growing number of failures directly linked to these fittings, including:

• Overheating of internal heating elements • Failure of pressure switches and flow sensors • Damage to seals and internal pipework • Complete failure of the electric shower unit

In many cases, this results in the shower needing full replacement rather than repair.

Why This Is Becoming More Common

These shower heads are widely available online at low cost and are often installed by tenants without informing landlords or agents.

Because they are marketed as “improvements,” tenants are usually unaware that they are actually causing damage.

We are now seeing this issue on a regular basis across multiple properties.

Our Recommendation to Letting Agents and Landlords

To prevent avoidable damage and costs, we recommend:

• Tenants should not install any aftermarket shower heads on electric showers • Only manufacturer-approved or standard shower heads should be used • Tenancy agreements or welcome packs should clearly state this restriction • Any unauthorised shower heads should be removed during inspections

Key Message for Tenants

A simple message to communicate:

“If it didn’t come with the shower, don’t fit it.”

Electric showers rely on correct water flow to operate safely. Restricting that flow can cause costly damage.

Summary

The use of mineral bead and “high-pressure” shower heads is leading to a noticeable increase in electric shower failures.

This is not a fault with the shower itself, but a result of incorrect accessories being fitted.

By preventing their use, landlords and agents can reduce maintenance costs, avoid unnecessary replacements, and ensure systems remain safe and compliant.

Frequently Asked Questions (North East UK)

What are my legal electrical responsibilities as a Landlord in Newcastle? As a landlord in the North East, you are legally required to ensure that all electrical installations in your rental property are safe when tenants move in and are maintained in a safe condition throughout the duration of the tenancy. This includes obtaining a satisfactory Electrical Installation Condition Report (EICR) every 5 years or at the start of a new tenancy. Switch Electrical & Mechanical Services provides comprehensive EICR audits for landlords across Newcastle, Sunderland, and Gateshead.

How much does an EICR cost for a standard property in the North East? The cost of an EICR depends on the size of the property and the number of circuits. Switch Electrical & Mechanical Services provides highly competitive, transparent pricing for landlords in the North East. We also offer discounted rates for landlords with multiple properties or HMOs requiring block certification.

What happens if my rental property fails an EICR? If an EICR identifies 'C1' (Danger Present) or 'C2' (Potentially Dangerous) codes, the installation is deemed 'Unsatisfactory'. Landlords have exactly 28 days to complete the necessary remedial work. Our team at Switch Electrical & Mechanical Services can provide immediate, fixed-price quotes for all remedial work following an inspection to ensure you remain legally compliant.