Vent-Axia 443310 Lo-Carbon Tempra T Heat Recovery Unit with Timer
Vent-Axia 443310 Lo-Carbon Tempra T Heat Recovery Unit with Timer
The Vent-Axia 443310 Lo-Carbon Tempra T Heat Recovery Unit is a compact, energy-efficient through-the-wall ventilation system designed to improve indoor air quality while reducing heat loss. Featuring an integrated overrun timer, low-energy EC/DC motor and high-efficiency heat exchanger, this decentralised mechanical ventilation with heat recovery (dMVHR) unit is ideal for bathrooms, kitchens, toilets and utility rooms.
Designed to fit a standard 100mm diameter wall opening, the Lo-Carbon Tempra T offers a practical upgrade from conventional extractor fans, particularly in residential refurbishment and social housing projects. Its integrated heat exchanger achieves up to 78% temperature efficiency, recovering warmth from extracted air to help maintain comfortable indoor temperatures and reduce energy consumption.
Key Features
- Integrated Overrun Timer: Allows extraction to continue after activation, helping remove residual moisture, odours and stale air.
- Up to 78% Heat Recovery: Efficient heat exchanger recovers warmth from outgoing air, helping reduce ventilation-related heat loss.
- Continuous Ventilation: Selectable extraction rates of 6 l/s or 9 l/s, with boost extraction up to 15 l/s.
- Low Energy Consumption: Efficient Lo-Carbon EC/DC motor consumes as little as 3.2W at trickle speed.
- Quiet Operation: Low-noise performance of approximately 20dB(A) at the lowest operating setting.
- Compact 100mm Installation: Fits standard 100mm diameter wall openings, making it suitable for replacing conventional extractor fans.
- Summer Extract Mode: Manual extract-only setting helps prevent unwanted heat recovery during warmer weather.
- IPX4 Rated: Splash-resistant construction for suitable bathroom and utility room installations.
- Efficient Airflow Design: Maintains slight negative pressure to help prevent humid air from spreading into adjoining rooms.
- Easy Maintenance: Accessible heat exchanger simplifies routine cleaning and servicing.
Energy-Efficient Heat Recovery Ventilation
The Vent-Axia Lo-Carbon Tempra T uses a compact heat exchanger to transfer warmth from outgoing stale air to incoming fresh air. With temperature efficiency of up to 78%, the system helps minimise unnecessary heat loss while providing effective ventilation throughout the property.
The unit can be configured for continuous extraction at 6 l/s or 9 l/s, with a boost extraction rate of 15 l/s when additional ventilation is required. For intermittent extraction applications, the unit can operate at 15 l/s.
Its airflow arrangement maintains slight negative pressure within the ventilated room, helping reduce the movement of humid air into adjoining spaces. This makes it particularly useful for managing moisture and condensation in bathrooms, kitchens and utility rooms.
Convenient Timer-Controlled Ventilation
The Vent-Axia 443310 Tempra T features an integrated overrun timer that allows the unit to continue extracting air after the activation signal has ended. This provides additional ventilation to help remove lingering humidity, unwanted odours and stale air.
The timer-controlled operation is particularly beneficial in bathrooms, toilets and other moisture-prone areas where continued extraction can help improve indoor air quality and reduce condensation.
Low-Energy and Quiet Performance
Equipped with a high-efficiency Lo-Carbon EC/DC motor and twin impellers, the Tempra T consumes as little as 3.2 watts at its lowest continuous extraction setting. This energy-efficient design makes it suitable for applications requiring regular or continuous ventilation.
With operating noise levels as low as 20dB(A), the unit delivers discreet ventilation while helping maintain a comfortable and peaceful indoor environment.
Ideal Applications
- Bathrooms and shower rooms
- Toilets and WC facilities
- Domestic kitchens requiring extract ventilation
- Utility rooms and laundry areas
- Social housing and residential properties
- Home renovation and refurbishment projects
- Replacement of existing 100mm wall-mounted extractor fans
- Properties requiring timer-controlled heat recovery ventilation
Technical Specifications
- Manufacturer: Vent-Axia
- Product Code: 443310
- Product Range: Lo-Carbon Tempra
- Model: T – Timer
- Ventilation Type: Decentralised Mechanical Ventilation with Heat Recovery (dMVHR)
- Installation Type: Through-the-wall
- Duct Connection Size: 100mm diameter
- Heat Recovery Efficiency: Up to 78%
- Continuous Extraction Rate: 6 l/s or 9 l/s
- Boost Extraction Rate: 15 l/s
- Minimum Power Consumption: 3.2W
- Noise Level: As low as 20dB(A)
- Motor Type: Lo-Carbon EC/DC with twin impellers
- Control Type: Overrun timer
- Summer Mode: Manual extract-only operation
- IP Rating: IPX4
- Applications: Bathrooms, kitchens, toilets and utility rooms
Simple Installation and Maintenance
The Vent-Axia 443310 Tempra T is designed for straightforward installation through an external wall using a standard 100mm diameter opening. Its compact heat exchanger design allows the unit to replace many conventional 100mm extractor fans while delivering the additional benefits of heat recovery ventilation.
The Lo-Carbon Tempra range is available with different cell lengths to accommodate varying wall thicknesses. The standard and longer-cell versions should be selected according to the installation requirements.
Its simple construction provides convenient access to the heat exchanger for routine cleaning and maintenance, helping maintain efficient airflow and reliable performance over time.
The Lo-Carbon Tempra range is designed to meet the performance requirements for continuous extract ventilation under Building Regulations Approved Document F, subject to correct installation and system configuration.