Vent-Axia 403832 Lo-Carbon Tempra LP Heat Recovery Unit – Long Cell with Pullcord
The Vent-Axia 403832 Lo-Carbon Tempra LP Heat Recovery Unit is an energy-efficient, through-the-wall decentralised mechanical ventilation with heat recovery (dMVHR) solution. Featuring a longer 460mm cell and convenient pullcord control, this compact unit is ideal for improving ventilation in bathrooms, kitchens, toilets and utility rooms, particularly in refurbishment and social housing projects.
Designed to fit an existing 100mm diameter wall opening, the Lo-Carbon Tempra LP combines continuous extract ventilation with effective heat recovery. Its integrated heat exchanger recovers up to 78% of heat from extracted air, helping to reduce heat loss, improve indoor air quality and minimise energy consumption.
Key Features
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Heat Recovery Efficiency: Recovers up to 78% of heat from extracted air to help reduce heating demand.
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Long Cell Design: Suitable for wall thicknesses between 321mm and 460mm.
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Pullcord Control: Convenient manual control for ventilation operation.
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Continuous Ventilation: Adjustable trickle extraction rates of 6 l/s or 9 l/s, with boost operation up to 15 l/s.
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Low Energy Consumption: Efficient Lo-Carbon EC/DC motor consumes as little as 3.2W at trickle speed.
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Quiet Operation: Low-noise performance of approximately 20dB(A).
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Compact Installation: Fits a standard 100mm diameter wall opening, making it suitable for replacing conventional extractor fans.
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Summer Mode: Manual extract-only setting helps prevent unwanted heat recovery during warmer weather.
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IPX4 Rated: Provides protection against splashing water.
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Easy Maintenance: Accessible heat exchanger and straightforward construction simplify cleaning and servicing.
Heat Recovery and Ventilation Performance
The Vent-Axia Lo-Carbon Tempra LP uses a compact heat exchanger to transfer warmth from outgoing stale air to incoming fresh air. This helps maintain comfortable indoor temperatures while providing effective ventilation and reducing unnecessary energy loss.
The unit offers selectable continuous extraction rates of 6 l/s or 9 l/s, with a boost rate of 15 l/s when additional ventilation is required. For intermittent extraction applications, the unit can be configured to operate at 15 l/s.
Its balanced airflow design maintains slight negative pressure within the ventilated room, helping prevent humid air from spreading into adjoining areas.
Ideal Applications
- Bathroom ventilation and moisture control
- Kitchen extract ventilation
- Toilet and WC ventilation
- Utility rooms and laundry areas
- Social housing and residential refurbishment projects
- Replacement of existing 100mm wall-mounted extractor fans
Technical Specifications
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Manufacturer: Vent-Axia
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Product Code: 403832
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Product Range: Lo-Carbon Tempra
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Model: LP – Long Cell with Pullcord
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Ventilation Type: Decentralised Mechanical Ventilation with Heat Recovery (dMVHR)
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Installation Type: Through-the-wall
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Duct Connection: 100mm diameter
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Long Cell Length: 460mm
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Suitable Wall Thickness: 321–460mm
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Heat Recovery Efficiency: Up to 78%
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Continuous Extract Rate: 6 l/s or 9 l/s
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Boost Extract Rate: 15 l/s
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Minimum Power Consumption: 3.2W
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Noise Level: As low as 20dB(A)
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Motor Type: Lo-Carbon EC/DC with twin impellers
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Control Type: Pullcord
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IP Rating: IPX4
Installation and Maintenance
The Vent-Axia 403832 is designed for installation through an external wall using a standard 100mm diameter opening. Its extended 460mm cell accommodates thicker walls, making it particularly suitable for refurbishment projects where conventional extractor fans need upgrading to heat recovery ventilation.
The compact construction provides convenient access to the heat exchanger for routine maintenance, helping maintain reliable airflow and efficient operation over time.
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