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BEMCO Ventilation Products & Installation Recommendations

Practical product-selection reference for ventilation, humidity extraction, ducting, grilles, controls and electrical coordination in renovation projects.

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Purpose of This Page

This page is used as a Systems Studio reference for comparing ventilation-related product families available through professional supplier channels. It helps prepare client choices before quotation, site visit or installation planning.

After the BEMCO training day, this page can be updated with exact product lines, technical preferences, supplier notes and practical installation lessons.

Main Product Families to Review

The following product families are relevant for renovation ventilation and humidity extraction projects. They should be selected according to room use, duct route, airflow need, acoustic comfort, controls and maintenance access.

Extraction

Bathroom Extract Fans

Local extraction fans for bathrooms, toilets, shower rooms and small humid spaces.

  • Timer models
  • Humidity-controlled models
  • Silent fan options
  • Backdraft shutters
VMC

Single-Flow VMC Units

Central mechanical extraction units for continuous ventilation from several wet rooms.

  • Bathroom, toilet and kitchen extraction
  • Air inlet coordination
  • Continuous low-speed operation
  • Boost control options
Humidity

Humidity-Controlled Extraction

Automatic extraction based on humidity rise, useful for mould and condensation risk.

  • Humidity sensor control
  • Automatic boost
  • Useful for rentals and bathrooms
  • Less dependent on user behaviour
Ducting

Ducts, Bends and Reducers

Air-routing components connecting fans, extraction points and exterior discharge.

  • Round ducts
  • Flat ducts
  • Reducers and bends
  • Insulated duct sections
Air Path

Grilles, Air Valves and Terminals

Components for air extraction, air transfer and outside discharge points.

  • Extract grilles
  • Ceiling air valves
  • Door transfer grilles
  • Wall and roof terminals
Controls

Sensors and Controls

Control devices for humidity, occupancy, timer, boost or air-quality response.

  • Humidity sensors
  • Timer controls
  • Manual boost switches
  • CO₂ monitoring where relevant
Electrical

Power and Control Wiring

Electrical installation material required for safe fan, VMC and sensor operation.

  • Permanent 230 V supply where needed
  • Switched live for timer fans
  • Control wiring
  • Accessible isolation and maintenance
Accessories

Fixing and Installation Accessories

Supporting materials needed for clean and maintainable installations.

  • Clamps and brackets
  • Sealing tape and collars
  • Anti-vibration mounting
  • Inspection and access components

Installation Recommendations

Good ventilation installation is not only about choosing a fan. The complete air path must be designed: air enters, transfers through the home, reaches wet rooms and exits outside without excessive noise, leakage or pressure loss.

Airflow

Protect the Air Path

  • Provide air inlets in dry rooms
  • Allow transfer under doors or through grilles
  • Avoid blocked or undersized ducts
  • Check that extraction does not fight airtight rooms
Duct Route

Keep Ducts Efficient

  • Use the shortest practical route
  • Limit sharp bends
  • Respect duct diameter
  • Insulate cold duct sections to reduce condensation
Noise

Control Acoustic Comfort

  • Select low-noise fans for bathrooms and bedrooms
  • Use inline fans where remote placement helps
  • Avoid vibration transfer to lightweight ceilings
  • Consider silencers for longer duct routes
Controls

Choose Practical Controls

  • Use humidity control for bathrooms and laundry rooms
  • Use timer run-on after showering
  • Provide manual boost where occupants need control
  • Keep controls understandable for clients
Maintenance

Plan Access

  • Filters must be reachable
  • Fans should be removable for cleaning
  • Grilles should be accessible
  • Avoid hidden components with no inspection access
Safety

Coordinate Electrical Work

  • Check IP rating for wet zones
  • Respect bathroom electrical zones
  • Use suitable protection and isolation
  • Coordinate controls before closing ceilings or walls

BEMCO Product Selection Comparison

Use this table as a pre-selection guide before choosing exact products, requesting prices or preparing a client recommendation.

Product Family Best For Selection Priority Installation Check Client Decision Impact
Bathroom Extract Fan Small bathrooms, toilets and wet rooms Noise level, timer, humidity sensor, backdraft protection Wall or ceiling position, duct route and electrical control Simple and budget-friendly first solution
Single-Flow VMC Unit Apartments or homes with several wet rooms Airflow capacity, number of extraction points and controls Air inlets, duct routing, access and balancing Better long-term ventilation strategy
Humidity-Controlled Extraction Bathrooms, laundry rooms and mould-risk areas Automatic response, boost setting and sensor position Permanent supply, control logic and airflow path Reduces dependence on occupant behaviour
Ducts and Accessories All extraction and VMC routes Diameter, resistance, bends, airtightness and insulation Route length, wall/roof terminal and cleaning access Can make or break system performance
Grilles, Valves and Terminals Air transfer, extraction points and outside discharge Airflow, pressure loss, acoustic comfort and appearance Correct placement and maintenance access Improves comfort and finished result
Sensors and Controls Humidity response, timer control and air-quality monitoring Simple user operation and reliable automatic function Power supply, wiring path and sensor location Reduces unnecessary client support questions

Recommended Buying Strategy

The goal is to avoid buying isolated components that do not work together. For each project, select the fan or VMC unit together with ducts, grilles, controls, electrical supply and maintenance access.

Starter

Small Bathroom Setup

For a single bathroom, toilet or small wet room.

  • Humidity-controlled extract fan
  • Backdraft shutter
  • Short duct or wall outlet
  • Timer or automatic boost
Apartment

Multi-Room Extraction Setup

For apartments with bathroom, toilet, kitchen and laundry extraction needs.

  • Single-flow VMC unit
  • Extraction valves
  • Duct network
  • Air inlets and transfer path
Mould Risk

Humidity-Control Priority

For condensation, mould risk and poorly ventilated wet rooms.

  • Humidity-sensitive extraction
  • Continuous low-speed ventilation
  • Automatic boost
  • Indoor humidity monitoring
Professional

Systems Studio Reference Kit

Useful product group to compare after supplier training and field experience.

  • Common fan models
  • VMC unit options
  • Ducting and grille examples
  • Controls and sensors for diagnostics

Client Request Preparation Checklist

Before sending a request, the client should collect the information below. This reduces back-and-forth emails and makes the quotation or advice process much faster.

Rooms

Room Information

  • Bathroom, toilet, kitchen, laundry or basement
  • Approximate dimensions
  • Existing fan or grille
  • Humidity, odour or mould problem
Route

Duct and Outlet Path

  • Wall outlet possible?
  • Roof outlet possible?
  • Existing shaft or duct?
  • Approximate route length
Electrical

Power and Controls

  • Nearby 230 V supply
  • Switch or permanent supply
  • Humidity/timer control needed
  • Access for maintenance
Photos

Useful Photos

  • Room overview
  • Ceiling or wall location
  • Outside wall or roof outlet area
  • Existing fan, duct or grille

Professional MEP Note

Ventilation product selection must be coordinated with electrical supply, control wiring, duct routing, air inlet strategy, acoustic comfort, condensation risk and access for maintenance. The fan or VMC unit alone does not guarantee performance.

After the BEMCO training day, this page should be updated with practical lessons learned, preferred product lines, installation details and supplier-specific notes.