Ventient EcoSmart Breathe


Proctor Ventient Trickle Ventilation

Proctor Ventient EcoSmart Breathe 

Product Description

Using passive temperature perception technology, Proctor Ventient™ EcoSmart Breathe in utilizing the physical characteristics of a unique Shape Memory Alloy (SMA) does not require the use of electric power or sensors.

Without electric power, sensors or human intervention, Ventient Trickle Ventilation technology can passively manage ventilation flow dependent on ambient temperatures, optimising the benefits of ventilation without introducing air at an uncomfortable temperature. 


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

As part of the total ventilation system Proctor Ventient can help reduce the need for cooling in buildings and provides fresh air for educational and healthcare facilities.

Providing ventilation for rooms or spaces that can remain unoccupied for periods throughout the year. Perfect for student accommodation and hotels.

Modern lifestyles mean that occupants are unable to manage purge ventilation and return home in the evening or after a few days away to stuffy environment. Ventient is an ideal solution for residential buildings such as modern air tight medium and high rise developments.

Natural Ventilation

Ventient devices (although unlikely alone) can contribute towards the total openable size of not less than 5% of the floor area of the room required to be ventilated.

Exhaust Make-up in Lieu of Supply 

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

General Exhaust Make-Up Air

AS 1668.2 draws to the attention of designers that increased air-tightness of modern buildings requires consideration of  sources of make-up air.

In the past there has been a reliance on leakage through historically poor facade construction.  Make-up air drawn through gaps and service penetrations does not meet the requirements of Clause 2.3 within the standard and concerns related to make-up air being drawn through poorly sealed construction joints, brick cavity vents and even power outlets can lead to the loss of amenity in the enclosure.

Clause 2.3 specifies acceptable sources of outdoor air as a mechanical outdoor air supply or permanent natural ventilation openings. Ventient can  provide the later option.

Sample Specification

Install Proctor Ventient EcoSmart Breathe trickle ventilator with shape memory allow thermal actuator into the window in accordance with the user guide.


Device Length: ________mm (L1 from figure 1)

Optional features: (from table 2)

Product Code: VENTIENTESB-24 / SB-18

Ventilation volume at ⊿P 12Pa: (from PQ data table)

Colour: (from table 1)

SMA Minimum Temperature: 14°C (other temperatures available)







 View from interior with optional cover



   Ventient EcoSmart Breathe device viewed from the interior

 Standard device viewed from the interior



Image from interior with cover option




          Image from exterior with cover option




Table 1 Performance

Open area (A)

17.2cm² - 78.2cm²

Effective open area (αA) with type A filter

6.5cm² - 34.4 cm²

Thermal Resistance

4.07 W/m².K

Air Tightness (JIS A 1516) when closed

A-4 (<20m³/hr.m² at 100Pa)

Water tightness (JIS A 1517) when closed

W-5 (500Pa)

Wind pressure (JIS A 1515) when closed

S-7 (3,600Pa)

Acoustic rating without covers (DnTw)





Standard Sizes and colours

Minimum Length (L1)

350 mm

Maximum Length (L1)

1,500 mm

Option to trim length

Available as requested up to 100mm

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.

Available with max. 2mm aperture with cover

Air filter (average arrestance)


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 cover


Interior cover 



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

 Ventient EcoSmart Breathe ESB24 Dimensions


Ventient EcoSmart Breathe ESB18 Dimensions


Ventient EcoSmart Breathe Dimensions Fig1

Figure 1


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.











PH: 1800 174 900 



Proctor Group Australia


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