Ventilation and air filtration systems for bomb shelters, bunkers, safe rooms and protected basements
Blauberg supplies specialist ventilation equipment for shelter projects where standard ventilation is not enough.
A shelter ventilation system must do more than move air. It must help filter incoming air, close off unsafe air routes, protect intake openings, control internal pressure and keep air moving during a power failure.
The range is suitable for bomb shelters, fallout shelters, bunkers, safe rooms, protected basements, emergency control rooms and critical infrastructure shelters.
These products are designed for protective ventilation applications, including clean ventilation, filter ventilation and air-regeneration modes. The VENTS shelter range includes fans, filters, filter-absorbers, airtight valves, protective grilles, expansion chambers, pressure-control valves and regenerative cartridges.
When the Air System Fails, the Shelter Fails
Ventilation is part of the life-protection system
In a bomb shelter, bunker or protected basement, the ventilation system is not there for comfort. It is there to help keep the space survivable.
The structure may protect against the outside event, but the air system must protect the route into the shelter. If contaminated air is drawn in, if the intake is exposed, if the ductwork cannot be isolated, or if airflow stops during a power failure, the people inside are at risk.
A properly designed shelter ventilation system helps control the air people depend on.
It must help:
- Filter incoming air before it reaches occupants
- Close off unsafe air routes when required
- Protect intake openings from pressure and debris
- Control internal pressure and airflow direction
- Keep air moving if electrical power fails
- Support longer occupation inside the shelter
Blauberg supports shelter projects where ventilation is treated as a critical protection system, not an afterthought.
A shelter is only as safe as the air inside it.
Filter incoming air before it reaches the occupied space
In a bomb shelter, bunker or protected basement, outside air cannot be treated as safe by default.
During a serious incident, the air outside may carry dust, smoke, radioactive fallout, chemical agents, toxic substances or biological aerosols. If that air is pulled directly into the shelter, the people inside are exposed.
A properly specified shelter ventilation system helps reduce that risk by filtering incoming air before it reaches the occupied space.
The VENTS range includes coarse dust filters and specialist filter-absorbers. The brochure describes FP, FPU and AFU filter-absorbers as being used to clean atmospheric air from warfare agents, highly toxic substances, radioactive dust and biological aerosols.
Protected Air Intakes
Reduce risk at the ventilation opening
Every shelter needs air, but every air intake is also a potential weak point.
If the intake is not protected, blast pressure, debris, dust or contaminated air can travel into the ventilation route. In a bomb shelter, bunker or protected basement, the air intake must be treated as part of the protection system.
The VENTS guide states that ventilation openings should be fitted with explosion-proof devices to protect systems from excessive air shock-wave pressure, with expansion chambers installed downstream.
Blauberg supplies protective grilles, grille casings, supply housings and expansion chambers for shelter air intake and exhaust protection.
Close unsafe air routes when conditions change
A shelter ventilation system must be able to control when air routes are open and when they are closed.
If outside air becomes contaminated, open ductwork can become a direct route into the shelter. Airtight valves help isolate the ventilation system, shut off unsafe air paths and switch between operating modes.
The VENTS range includes GK airtight ventilation valves, GKE airtight valves with electric actuators, GKP double airtight valves and LV inspection hatch inserts. The brochure states that shelter airtight valves are designed for emergency pressure of at least 0.1 MPa.
Manual Emergency Ventilation
Keep air moving if the power fails
A shelter cannot rely on mains power alone.
During a serious incident, electricity may fail, generators may be unavailable and building services may stop. But people inside the shelter still need controlled airflow.
VENTS ERV and ERV-M fans are designed with both electric and manual drive capability. The brochure states that ERV fans can operate from mains power or manually, with 1 to 3 operators required during manual operation.
Help keep contaminated air moving away from the occupied space
In a shelter, airflow direction matters.
If pressure is not controlled, contaminated air can be drawn in through small gaps, doorways, ducts or service penetrations. A properly planned pressure-control strategy helps manage how air moves through the shelter and reduces the risk of uncontrolled inward leakage.
The VENTS KNTK excess-pressure valve is designed to maintain and control excess pressure in defence structures, with a stated operating range of 20–150 Pa.
Help keep contaminated air moving away from the occupied space
In a shelter, airflow direction matters.
If pressure is not controlled, contaminated air can be drawn in through small gaps, doorways, ducts or service penetrations. A properly planned pressure-control strategy helps manage how air moves through the shelter and reduces the risk of uncontrolled inward leakage.
The VENTS KNTK excess-pressure valve is designed to maintain and control excess pressure in defence structures, with a stated operating range of 20–150 Pa.
Quality manufacturing
Our hotel and leisure ventilation solutions live up to Blauberg’s reputation of providing high-quality products, entirely manufactured in Europe.
Whisper-quiet products
Our products are so quiet, you can rest assured your hotel guests will not be interrupted by in-room units.
In-house experts
Our team of experts are here to advise from planning to installation. We will take your specifications and floor plan into account to provide an accurate quote, any extra calculations you require, as well as technical information for each system.
Highly efficient
The most efficient MVHR systems on the market with A+ energy ratings.