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Ventient EcoSmart Breathe (ESB)

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Proctor Ventient EcoSmart Breathe (ESB)

Glazed-in trickle vent with passive temperature sensing flow control


Product Description

The Ventient EcoSmart Breathe (ESB) is precision manufactured aluminium glazed-in trickle vent that can be accommodated into a wide range of window frames.

The Ventient passive shape memory technology, without electric power, sensors or human intervention, automatically controls ventilation flow dependent on ambient temperatures, optimising the benefits of passive ventilation.


Improvements in construction create buildings that are more airtight than previously, with the result that infiltration or leakiness is no longer providing a pathway for make-up air for exhaust systems.

Although many building are complying with building code requirements by having sufficient operable windows, changing lifestyle patters, concerns about noise and security and generational differences mean that ventilation from open windows tends to be infrequent.

Unlike conventional systems such as operable windows or louvres, Proctor Ventient ESB can get on with the job of providing fresh air circulation regardless of occupancy.

As part of the total ventilation system Proctor Ventient can provide continuous ventilation to spaces even if they are unoccupied and is perfect for  student accommodation, hotels, age care, healthcare and educational facilities.

Ventient is an ideal solution for residential buildings such as modern air tight homes and medium or high rise developments, as modern lifestyles mean that occupants are unable to mange purge ventilation and often  return home to a stuffy environment.


The Ventient ESB is installed into the glazing pocket of the frame in accordance with the product installation guide.


Exhaust Make-up in Lieu of Supply

Where it is not possible to meet the code requirements for natural ventilation, or where the design preference is for a specific air change rate and 24 hour provision of fresh outside air without leaving windows open,  Ventient, in conjunction with low energy, mechanical extract ventilation can provide or contribute to supply ventilation as required when calculated in accordance with AS1668.2.

EcoSmart Breathe

General Exhaust Make-Up Air

AS1668.2 draws to the attention of designers that increased air-tightness of modern buildings requires consideration of sources of make-up air.   Make-up air drawn through gaps and service penetrations does not meet the requirements of Clause 2.3 within the standard and can lead to the loss of amenity in the enclosure.

Ventient ESB could be an acceptable permanent natural ventilation opening as required in Clause 2.3.

View from interior and exterior cover option

Sample Specification

Install Proctor Ventient ESB Trickle Vent with shape memory alloy passive temperature sensing flow control, in accordance with the user guide.

Device Length: ________mm (L2 from figure 1)

Optional features:  (from table 2)

Product Code: VENTIENT ESB-24 / ESB-18

Ventilation volume at ⊿P12Pa: (from PQ data)

Colour:  (from table 1)

SMA Minimum Temperature: 12°C (other temperatures

Table 1 Performance 
Open area (A)17.2cm² – 78.2cm²
Effective open area (αA)


6.5cm² – 34.4 cm² (no filter)

6.5cm² – 29.7 cm² (Type A filter)

Air Tightness (JIS A 1516) when closedA-4 (<20m³/hr.m² at 100Pa)
Water tightness (JIS A1517) when closedW-5 (500Pa)
Wind pressure (JIS A1515) when closedS-7 (3,600Pa)
Acoustic Ratings (JIS A4706) (DnTw)






Standard Sizes and Colours 

Minimum Length (L1)350 mm
Maximum Length (L1)1,500 mm
Option to trim lengthAvailable up to 100mm trim
Suitable for glazing units≤24mm  Product Code: VENTIENTESB-24

≤18mm  Product Code: VENTIENTESB-18

Dimensional tolerance (L1)± 1 mm
Standard available colours for main unit in gloss or matt anodized finish.

Selection of unfinished interior and exterior covers enables the window supplier to coat covers to match the frame.

Table 2 Optional Features
Shape Memory Alloy (SMA)

Thermal Actuator

– Fully Open

– Minimum Open  (typically 33%)


Fitted as standard




Other set point are available

Mesh to resist vermin, insects and windblown material.Exterior cover includes a max. 2mm aperture screen

Air filter

(average arrestance)

 68% (Type A)
 Manual Operation

– Closable

– Openable



Standard (Auto mode)

Intumescent fire barrier Available option with exterior cover
Additional acoustic attenuation Available option with interior and exterior covers
Exterior coverAvailable
Magnetic fix interior coverAvailable

Interior face cover can be removed from the interior to clean the device and filter.


Figure 1. Ventient ESB dimensions


The details supplied here are based upon good practice and currently available information.  Advice regarding this product  should be taken as a guide only. We reserve the right to change product specification without notice so please refer to our website for the latest version of this document.  Please contact us to discuss your project and any technical enquires. Please refer to the PQ data sheet and product user guide.