Vent-Axia 494149 Lo-Carbon Response 7 Pro 100mm SELV dMEV Extractor Fan

The Vent-Axia 494149 Lo-Carbon Response 7 Pro 100mm SELV dMEV Extractor Fan is a high-performance, energy-efficient continuous ventilation solution designed specifically for social housing and residential properties. Featuring Safety Extra Low Voltage (SELV) technology, intelligent Smart Sense™ controls and constant volume airflow, this advanced extractor fan delivers reliable ventilation while helping manage condensation, excess moisture and indoor air quality.

With extraction rates of up to 35 litres per second, an ultra-low-profile design and quiet, filterless operation, the Response 7 Pro SELV is suitable for bathrooms, kitchens, utility rooms and toilets. Its digital commissioning interface, performance monitoring and lockable settings make it particularly beneficial for landlords, housing associations and professional installers.

Key Features

• SELV Technology: Safety Extra Low Voltage design provides an electrical safety solution for suitable domestic ventilation installations.
• Continuous dMEV Ventilation: Provides consistent background extraction to help maintain healthier indoor air quality.
• Constant Volume Airflow: Pro model automatically maintains the selected extraction rate for reliable ventilation performance.
• High Extraction Capacity: Delivers airflow rates of up to 35 l/s for effective removal of moisture and household odours.
• Smart Sense™ Technology: Intelligent digital controls simplify installation, commissioning and operational monitoring.
• Digital Performance Display: Shows installed airflow and system pressure information for accurate commissioning.
• Energy Monitoring: Records running days, trickle and boost operating hours, and energy consumption.
• Ultra-Low-Profile Design: Compact construction provides a discreet appearance in domestic interiors.
• Filterless Operation: Reduces routine maintenance requirements and eliminates the need for filter replacement.
• Efficient Trickle Ventilation: Provides effective continuous extraction to minimise unnecessary boost operation.
• IPX7 Protection: SELV models are specified with IPX7 protection, subject to confirmation of the exact model rating.
• Comfort Control Option: Selectable delayed boost activation helps minimise disturbance during short bathroom visits.
• Lockable Settings: Prevents unauthorised adjustments to commissioned ventilation settings.
• Wall or Ceiling Mounting: Flexible installation with an automatically orientating LED display.
• Optional Decorative Frame: Available to provide a neat finish around the installed fan.
• Lo-Carbon Motor Technology: Designed for efficient continuous operation with low electricity consumption.
• 7-Year Warranty: Manufacturer-backed warranty for long-term peace of mind.

Safety Extra Low Voltage (SELV) Ventilation

The Vent-Axia Response 7 Pro SELV is designed for installations requiring a Safety Extra Low Voltage extractor fan. SELV technology operates using an extra-low-voltage electrical supply, helping reduce electrical shock risks in suitable domestic applications.

The SELV version is particularly relevant for bathroom ventilation projects where electrical safety and installation requirements must be carefully considered.

The product range information identifies IPX7 protection for SELV models. Installers should confirm the exact protection rating, transformer requirements and permitted installation locations using the manufacturer's instructions and applicable electrical regulations.

Constant Volume Continuous Ventilation

The Vent-Axia 494149 uses decentralised mechanical extract ventilation (dMEV) technology to provide continuous extraction of stale, humid air.

Its constant volume control system is designed to maintain the commissioned airflow rate as system resistance changes, helping deliver dependable ventilation performance across different installation conditions.

With a maximum extraction rate of 35 l/s, the fan is suitable for domestic bathrooms, kitchens, utility rooms and toilets requiring effective background and boost ventilation.

Smart Sense™ Intelligent Control Technology

The integrated Smart Sense™ system provides straightforward commissioning and detailed operational monitoring through a clear alphanumeric LED display and three-button control interface.

The display automatically adjusts its orientation according to whether the fan is mounted on a wall or ceiling, improving readability and simplifying installation.

Smart Sense™ technology provides access to useful operating information, including:

• Total number of days the extractor fan has been running.
• Operating hours in continuous trickle mode.
• Total hours spent in boost mode.
• Boost operating hours triggered by humidity control, where applicable.
• Recorded energy consumption.
• Installed airflow and system pressure information.

This intelligent monitoring functionality is particularly useful for housing associations and landlords who need to review ventilation operation and maintain consistent performance across residential properties.

Digital Airflow and System Pressure Monitoring

The Response 7 Pro SELV incorporates an innovative digital display that provides information about airflow performance and system pressure.

This enables installers to check the fan's operating conditions during commissioning and helps confirm that the ventilation system is delivering the intended extraction performance.

The clear interface reduces setup complexity and supports accurate adjustment of ventilation settings.

High-Performance Trickle and Boost Extraction

The Vent-Axia Lo-Carbon Response 7 Pro SELV is engineered to provide effective continuous extraction at trickle speed, reducing the need for frequent boost operation.

When additional ventilation is required, boost mode increases airflow to help remove excess moisture, steam and unpleasant odours more quickly.

This combination of constant background extraction and responsive boost ventilation helps maintain indoor air quality while minimising unnecessary noise and energy consumption.

Comfort Control Technology

The Response 7 range features an optional patented Comfort Control function designed to improve occupant comfort by delaying boost activation.

When enabled during installation, the delayed-start function can postpone boost operation for up to 20 minutes, allowing residents to enjoy a quieter bathroom environment.

If the bathroom light is switched on and off within three minutes, boost activation is prevented. This feature is particularly useful during night-time bathroom visits, helping avoid unnecessary disturbance to other household members.

Designed for Social Housing

The Vent-Axia 494149 has been developed to meet the practical requirements of social housing providers, landlords and residents.

Its ultra-low-profile appearance blends discreetly into domestic interiors, while the filterless construction reduces maintenance requirements.

The unique settings lock helps prevent unauthorised changes to commissioned airflow settings. Combined with Smart Sense™ data logging, this allows property managers to monitor ventilation operation and support consistent performance across managed housing.

Energy-Efficient and Low-Maintenance Performance

Featuring Vent-Axia's Lo-Carbon motor technology, the Response 7 Pro SELV delivers efficient continuous ventilation with low electricity consumption.

High-performance trickle extraction helps reduce unnecessary boost operation, while the filterless design removes the need for regular filter replacement.

The compact construction and optional decorative frame support a neat installation in both refurbished and existing residential properties.

Technical Specifications

• Manufacturer: Vent-Axia
• Product Code: 494149
• Product Range: Lo-Carbon Response 7
• Model: Response 7 Pro SELV
• Product Type: Continuous Extractor Fan
• Ventilation Type: Decentralised Mechanical Extract Ventilation (dMEV)
• Electrical Type: Safety Extra Low Voltage (SELV)
• Duct Connection Size: 100mm
• Maximum Extraction Rate: 35 l/s
• Airflow Control: Constant Volume
• Ventilation Operation: Continuous Trickle and Boost
• Motor Technology: Lo-Carbon
• Control System: Smart Sense™
• Display: Alphanumeric LED
• Commissioning Interface: Three-Button Menu
• Performance Monitoring: Airflow and System Pressure Display
• Data Logging: Days Run, Trickle Hours, Boost Hours and Energy Consumption
• Settings Protection: Lockable Controls
• Installation Options: Wall or Ceiling Mounting
• Construction: Filterless, Ultra-Low-Profile Design
• Optional Accessory: Decorative Installation Frame
• Applications: Bathrooms, Kitchens, Utility Rooms and Toilets
• Primary Sector: Social Housing
• Warranty: 7 Years

Applications

• Domestic bathroom ventilation
• SELV extractor fan installations
• Kitchen extraction and moisture management
• Utility room ventilation
• Toilet and WC extraction
• Social housing ventilation upgrades
• Residential refurbishment and renovation projects
• Continuous decentralised mechanical extract ventilation
• Landlord and housing association properties
• Condensation and indoor air quality management

Installation Information

The Vent-Axia Response 7 Pro SELV supports wall and ceiling mounting, with an automatically orientating LED display that simplifies commissioning in either position.

The fan features a compact 100mm duct connection and an ultra-low-profile design for discreet installation. Its digital control interface enables installers to configure airflow settings and review operating performance directly from the unit.

Important: The supplied product information lists IPX7 for SELV models but also identifies IPX5 in the product overview. The exact IP rating and SELV power supply requirements for model 494149 must be confirmed against the manufacturer's documentation before installation.

Data Sheet

Click Here for Data Sheet

Installation Guide

Click Here for Installation Guide