Choosing hearing protection is not simply a case of finding the ear defender with the highest rating. Ear defenders and ear plugs are suited to different environments, wearers and noise levels, and too much attenuation can sometimes create problems of its own.

The aim is to provide appropriate protection for the actual level and type of workplace noise.

This guide explains what to consider when choosing ear defenders, ear plugs and other hearing protection.

1. Start With the Noise Assessment

Before buying hearing protection, you need to understand the noise employees are exposed to.

Consider factors such as:

How loud is the noise?
How long are workers exposed?
Is the noise continuous or intermittent?
Are there sudden or impact noises?
Do employees move between different noise environments?
Do they need to communicate while wearing protection?
Do they need to hear alarms or warning signals?

The workplace noise assessment should determine where hearing protection is required and the level of protection needed.

Don’t start with the ear defender. Start with the noise.

2. Understand the 80 dB and 85 dB Action Values

UK workplace noise regulations use exposure action values.

The lower exposure action value is 80 dB(A) for daily or weekly personal noise exposure.

At this level, employers have duties including providing information and training, and making suitable hearing protection available where required.

The upper exposure action value is 85 dB(A).

At this level, employers must take additional action, including establishing hearing protection zones where appropriate and ensuring suitable hearing protection is used.

There are also exposure limit values that must not be exceeded, taking account of the protection provided by hearing protection.

These figures relate to exposure rather than simply a single sound-level reading, so a proper noise assessment is important.

3. Ear Defenders or Ear Plugs?

Both ear defenders and ear plugs can provide effective hearing protection when correctly selected, fitted and worn.

The best choice depends on the workplace, the wearer and the level of attenuation required.

Ear Defenders

Ear defenders use cups that completely cover the ears.

They can be particularly useful where hearing protection is frequently put on and removed, or where workers move in and out of noisy areas.

Advantages can include:

Easy to put on and remove
Easy to see whether they are being worn
Reusable
Useful for intermittent noise exposure
Different attenuation levels available
Helmet-mounted versions available
Electronic options available

You can browse our range of Ear Defenders here.

Ear Plugs

Ear plugs fit into or over the entrance to the ear canal, depending on their design.

Options can include:

Disposable foam plugs
Reusable plugs
Banded ear plugs
Corded plugs
Detectable plugs
Individually moulded protection

Ear plugs can be particularly useful in hot environments or where bulky ear defenders would interfere with other PPE.

However, correct fitting is extremely important. A poorly inserted ear plug may provide considerably less protection than expected.

If plugs are more suitable for your workplace, you can browse our range of Ear Plugs here.

4. What Does EN 352 Mean?

EN 352 is the key European standards family you will commonly encounter when buying hearing protection.

Different parts of EN 352 apply to different types of hearing protector.

These can include:

Ear muffs
Ear plugs
Helmet-mounted ear muffs
Level-dependent protection
Active noise-reduction products
Audio and communications hearing protection

Don’t simply look for “EN 352” and assume every product provides the same level of protection.

Check the individual product’s attenuation data and intended use.

5. What Does SNR Mean?

One of the most useful figures you’ll see when comparing hearing protection is the SNR – Single Number Rating.

You might see products with ratings such as:

SNR 25 dB

SNR 30 dB

SNR 35 dB

The SNR provides a convenient indication of the hearing protector’s attenuation performance under specified test conditions.

But there is an important point:

Higher is not automatically better.

If the workplace noise does not require extremely high attenuation, choosing the highest SNR available can potentially overprotect the wearer.

The correct hearing protection should reduce exposure sufficiently without unnecessarily isolating the employee from their surroundings.

6. What Are H, M and L Ratings?

Alongside the SNR, hearing protectors may also show:

H – High-frequency attenuation

M – Medium-frequency attenuation

L – Low-frequency attenuation

This gives more information about how the protector performs across different frequency ranges.

That can be useful because workplace noise is not all the same. A machine producing mainly low-frequency noise may require a different approach from equipment producing predominantly higher-frequency sound.

For more complex noise environments, don’t rely solely on the SNR number.

7. Avoid Overprotection

This is one of the most common mistakes when buying hearing protection.

It can be tempting to think:

“SNR 37 must be better than SNR 27.”

Not necessarily.

Excessive attenuation can make it harder for employees to hear:

Colleagues
Instructions
Alarms
Vehicles
Machinery
Warning signals

It can also leave workers feeling isolated, which may encourage them to remove their hearing protection.

The objective is not to make the workplace as quiet as possible.

It is to reduce harmful noise exposure to an appropriate level while allowing the employee to work safely.

8. Helmet-Mounted or Headband Ear Defenders?

If you choose ear defenders, think about how they will be worn.

Headband Defenders

Headband defenders are straightforward and versatile where a safety helmet is not required.

They can also be useful for visitors and general workplace applications.

Helmet-Mounted Defenders

Where workers already wear safety helmets, helmet-mounted ear defenders can provide a convenient integrated solution.

But compatibility is crucial.

Don’t assume every pair of helmet-mounted defenders will fit every safety helmet.

Attachment slots may look similar while the combination may not be approved or tested for use together.

Always check the manufacturer’s compatibility information before ordering.

You can compare different options in our Ear Defenders range.

9. Think About All the PPE Being Worn

Hearing protection rarely exists in isolation.

The employee may simultaneously wear:

Safety helmet
Safety glasses
Goggles
Respirator
Face shield
Hi-vis clothing

This is particularly important with ear defenders.

The cushion needs to achieve the intended seal around the ear.

Anything interfering with that seal can potentially affect performance.

For example, thick spectacle arms, helmet components or other equipment may influence how the defender sits.

Choose PPE as a system rather than as individual products.

10. Electronic Ear Defenders

Not every ear defender simply blocks sound.

Electronic and level-dependent hearing protection can be useful in workplaces where employees need protection from hazardous noise while maintaining greater awareness of their surroundings.

Depending on the product, these can help users hear:

Speech
Warning signals
Environmental sounds

while still providing protection against hazardous noise.

They can be useful in specialist working environments, but the product still needs to provide the level of hearing protection identified by the noise assessment.

11. Communication Ear Defenders

Some jobs require employees to communicate while working in high-noise environments.

Specialist hearing protection can incorporate features such as:

Two-way communication
Bluetooth
Radio connectivity
Microphones
Environmental listening

These products can be considerably more expensive than conventional defenders, but for the right workplace they can solve a genuine safety and productivity problem.

Don’t compromise hearing protection simply because employees need to communicate. Choose equipment designed for both requirements.

12. Comfort Is Extremely Important

Hearing protection only works when it is worn.

For employees wearing protection throughout a shift, consider:

Weight
Clamping pressure
Cushion softness
Heat build-up
Headband adjustment
Cup size
Compatibility with helmets
Compatibility with glasses
Ease of fitting

A cheaper ear defender that employees constantly remove because it is uncomfortable is not necessarily good value.

For regular users, spending slightly more for comfort can make sense.

13. Disposable or Reusable Ear Plugs?

Disposable foam plugs are inexpensive and convenient, particularly where hygiene is important.

But they need to be fitted correctly.

Reusable ear plugs can be economical where the wearer can clean and maintain them appropriately.

Banded plugs can be useful where protection is frequently put on and removed.

Corded and detectable ear plugs may also be useful in particular working environments.

The important question is not simply:

“Which is cheapest?”

Consider:

FIT + HYGIENE + COMFORT + FREQUENCY OF USE + REQUIRED ATTENUATION

You can compare the different styles available in our Ear Plugs range.

14. Hygiene Matters

Hearing protection comes into close contact with the wearer, so keeping it clean matters.

Reusable ear defenders should be inspected regularly.

Check:

Ear cushions
Foam inserts
Headbands
Helmet attachments
Adjustment mechanisms

Ear cushions can become hard, cracked or damaged over time.

Many quality ear defenders allow cushions and inserts to be replaced using hygiene kits rather than replacing the entire defender.

Reusable ear plugs should also be cleaned and replaced in accordance with the manufacturer’s instructions.

15. When Should Hearing Protection Be Replaced?

There is no useful universal replacement period covering every type of hearing protection.

Instead, inspect equipment regularly and follow the manufacturer’s instructions.

Replace hearing protection when components are:

Damaged
Cracked
Hardened
Deformed
Excessively worn
Contaminated
No longer achieving the correct fit

Disposable ear plugs should be treated as disposable products and used in accordance with the manufacturer’s instructions.

16. Don’t Forget Training

You can buy excellent hearing protection and still achieve poor real-world protection if employees do not know how to use it.

Workers should understand:

Why hearing protection is required
Where it must be worn
How to fit it correctly
How to inspect it
How to clean and store it
When to replace it

This is particularly important with ear plugs because the protection achieved depends heavily on correct fitting.

17. Cheap or Premium Hearing Protection?

A basic EN 352 hearing protector can be perfectly appropriate where its attenuation and other characteristics meet the requirements of the noise assessment.

But for employees wearing protection every day, premium features can offer genuine benefits.

These might include:

Lower weight + improved cushions + better adjustment + reduced heat + communications + level-dependent technology

Think about cost per wear, not simply the initial purchase price.

Hearing Protection Ordering Checklist

What are the noise exposure levels?
How long are employees exposed?
What attenuation is required?
What SNR is appropriate?
Do the H, M and L values matter for this noise?
Ear plugs or ear defenders?
Is there a risk of overprotection?
Do employees need to communicate?
Do they need to hear alarms or vehicles?
Will the protection be worn with a safety helmet?
Is the helmet and defender combination compatible?
Will safety glasses or other PPE affect the fit?
Is comfort important for all-day wear?
How will reusable equipment be cleaned and maintained?
Have employees been shown how to fit it correctly?

Ready to Choose Your Hearing Protection?

Don’t start by asking:

“Which ear defender has the highest SNR?”

Start with:

NOISE → EXPOSURE → ATTENUATION → TYPE → FIT → COMFORT → COMPATIBILITY

The best hearing protection is not necessarily the product that blocks the most noise.

It is the product that provides appropriate attenuation for the actual workplace noise, fits correctly, works with the wearer’s other PPE and is comfortable enough to be worn whenever it is required.

When you’re ready to order, browse our range of Ear Defenders or shop our Ear Plugs to compare the different options available.

And remember: hearing protection is PPE and therefore the last line of defence. Noise should first be eliminated or reduced at source wherever reasonably practicable, with hearing protection forming part of the overall noise-control strategy.

```

Written by Steve Cree at 20/08/2026