What Determines the Price of a Shielded Room? 6 Factors to Know Before Getting a Quote
Two shielded rooms may look the same and still be priced very differently. We explain the main cost factors one by one.
3 min readSeptember 2, 2026
How Does Interference Spoil the Measurement?
An EEG device measures very weak signals at the microvolt level. Interference from elevators, mains lines and other medical devices can mix into these measurements.
The result is noisy recordings, repeat measurements and a longer diagnostic process.
What Does a Shielded Room Provide?
A shielded examination room cuts out external interference, making measurements clean and repeatable. Power lines are filtered and interference-free lighting is selected.
Inside, it is designed to feel like an ordinary, spacious room for the patient.
What to Consider During Installation
When choosing the room's location, proximity to transformers, elevators and large motors should be assessed. The interference level is measured during the site survey.
An existing examination room can usually be converted into a shielded room.
The Right Place in the Hospital
The EEG room's location in the hospital directly sets the shielding level needed. A spot close to lifts, transformer rooms or imaging equipment requires stronger, more costly shielding.
That's why measuring before choosing the site is recommended. We listed the main sources in our interference sources in hospitals article. For solutions, see our EEG shielded room page.
Frequently Asked Questions
Which frequencies matter in an EEG room?
The most critical is 50 Hz mains noise and its harmonics; radio-frequency noise can also spoil recordings.
Does a shielded room feel confined to the patient?
When the interior is spacious, bright and designed like an ordinary examination room, the patient notices no difference.
Can an existing EEG room be improved?
Yes. Measurement finds the source; grounding, lighting and cable changes sometimes improve things even without shielding.
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