Design Proposal – DuctSox Fabric Air-Distribution as an Alternative to Sheet-Metal Ductwork

Prepared for: [Client / Project]
Prepared by: [Your Name / Company]
Date: [Insert]

1. Executive Summary

We propose DuctSox® engineered fabric ducting, supplied by ecoHVAC, as a superior alternative to conventional sheet-metal ductwork for this project.
DuctSox is specifically engineered for open-plan spaces, provides uniform low-velocity air distribution, prevents condensation through porous fabrics, is fully washable for hygiene, offers architectural-quality aesthetics including custom branding, and installs significantly faster than metal ductwork.

Manufacturer overview:
DuctSox Fabric Ducting | Textile Air Dispersion Systems

2. Why DuctSox Is Recommended for This Project

2.1 Ideal for Large Open Spaces

DuctSox is purpose-designed for open-plan environments—such as school halls, multipurpose rooms, sports centres, gyms, retail, showrooms, warehouses and exposed-ceiling architectural spaces.

Because the duct itself becomes the diffuser, DuctSox delivers broad, uniform coverage without the complexity of multiple steel branches and diffusers.

2.2 Porous Fabric = No Condensation, No Floor Drips

The air-permeable fabric eliminates surface condensation even when:

• roller doors or large doors are open

• windows introduce humid outside air

• there are rapid shifts in indoor/outdoor humidity

This prevents dripping—an issue common with cold metal ductwork in semi-conditioned spaces—making DuctSox ideal for active environments where safety and cleanliness are critical.

2.3 Fully Washable for Hygiene & IAQ

DuctSox systems are fully removable and machine-washable.

Key benefits:

• No internal insulation to harbour dust or microbial growth

• No hidden contamination zones

• Easy, low-cost cleaning aligned with AS 3666 hygiene principles

• Improved IAQ and building cleanliness

This is a major advantage over sheet-metal ducting, which is expensive and difficult to clean.

2.4 Even, Low-Velocity Air Distribution

DuctSox delivers consistent, low-velocity air distribution through engineered micro-perforations, vents or directional nozzles.
This removes hot/cold spots and eliminates drafts typical of grille/diffuser-based systems.

Air dispersion options:
https://ecohvac.com.au/collections/ductsox-fabric-ducting

2.5 Architectural Aesthetics & Custom Branding

DuctSox enables high-quality visual outcomes for exposed ceilings, offering:

• multiple colours

• round, oval or D-shaped profiles

• architectural fabric finishes

• custom-printed branding/logos (schools, sporting clubs, retailers)

This creates a clean, modern appearance that sheet-metal ductwork cannot provide.

2.6 Faster Installation & Lower Structural Loads

• Typically installs 40–60% faster than metal ductwork

• Up to 95% lighter

• Minimal lifting or cranage required

• Lower structural load on trusses, purlins or ceiling systems

This improves construction program efficiency and reduces installation risk.

3. Suspension Options

3.1 Skeleton Suspension System (Rigid Track)

Best for: open spaces with visible ductwork, gyms, schools, retail.

Features:

• Rigid, shape-retaining aluminium or composite track

• Maintains round or D-shape profile even when the system is off

• Premium architectural appearance

• Stable in environments with activity, movement or impact

3.2 Catenary Suspension System (Cable System)

Best for: long spans, high-level areas, large open halls and warehouses.

Features:

• Tensioned stainless-steel cables

• Minimal structural load

• Economical and fast to install

• Clean, lightweight appearance

Selecting the Right Option

ecoHVAC typically recommends:

• Skeleton for architectural visual impact, stability, and shape retention

• Catenary for long spans, high bays and minimal structural impact

4. Key Advantages Summary

• Engineered specifically for open-plan spaces

• Condensation-free porous fabric (ideal when doors/windows are open)

• Fully washable for superior hygiene and IAQ

• Even air distribution along the entire duct run

• Architectural appearance with custom branding options

• Fast installation with lower structural load

• Choice of Skeleton or Catenary suspension systems

5. Compliance & Performance Notes

DuctSox supports:

• NCC Section J energy objectives (lower static pressure)

• AS 1668.1/1668.2 airflow performance

• AS 3666 hygiene expectations (washable materials, no internal insulation)

• ecoHVAC selection and engineering data for certification

Notes to Contractors and Designers (Separate From Proposal)

ecoHVAC will prepare a complete DuctSox system design, including fabric selection, perforation/nozzle patterning, sizing, and suspension details.

Information Required by ecoHVAC

Please provide the following:

1. Mechanical drawings (DWG/PDF) or RCP showing duct runs

2. Airflow quantities per run (L/s)

3. Available static pressure at the supply connection

4. Mounting height and any structural support limitations

5. Building use and environmental conditions

6. Preferred duct profile (Round / Oval / D-shape)

7. Colour or custom logo/branding requirements (optional)

8. Required suspension type (Skeleton Track or Catenary Cable)

9. Any constraints regarding access, installation sequence or ceiling services

ecoHVAC Will Provide

• Full DuctSox selections (fabric, permeability, perforations, nozzles)

• Layout and sizing

• Suspension system specification

• Fixing and installation details

• Documentation for design certification, tender or builder approval