Subfloor Ventilation Installation in Palm Beach, Sydney

Today our team completed a comprehensive subfloor ventilation installation in Palm Beach, Sydney, transforming a poorly designed system into a properly engineered solution that delivers reliable, long-term moisture control and air circulation.

Removing a Faulty Installation

A professional mould remediation company contacted us after discovering the previous subfloor ventilation system — installed less than a year ago — had not been performing. Upon inspection, our team found five fans installed, but only three were exhausting to outside. The remaining two were simply recirculating stale air within the subfloor, providing no genuine ventilation benefit. To make matters worse, the house had no passive vents to allow fresh air to re-enter the subfloor, meaning the system was operating under negative pressure with no proper air replacement path.

We also noted a range of non-compliant workmanship issues:

Cheap plastic louvre vents used for exhaust points.
Unclipped electrical wiring, run in line of sight, visible and not compliant with Australian Standards.
Duct ends left unfinished and hanging in the subfloor.
Fans sitting directly on the ground, without ducting or supports.

Cheap Non-UV-Stable Plastic Exhaust Grilles were Removed

Ducting on Existing Fans was Short and Barely Covering the Large Subfloor Space

Existing Recirculation Fans were Sitting on the Ground without Ducting

Existing Duct Ends were Unfinished and Unsupported (Hung from Sagging Electrical Cable in this Example)

Installing a Properly Engineered System

To rectify the problems, our team of four qualified in-house tradespeople — two licensed electricians and two licensed carpenters — completely removed the existing setup and started fresh. We installed five of our exclusive Australian-made subfloor fans, each one exhausting directly to outside as it should.

Our carpenters then drilled two new core holes to create proper exhaust points for the 4th and 5th fans, and five additional core holes for passive air inlets. As access along the side of the home was extremely tight, the team drilled all holes by hand, using a custom melamine drilling template designed on site to ensure perfectly aligned, level holes despite the constraints.

All external plastic vents were replaced with marine-grade stainless steel vents, ensuring durability in the coastal Palm Beach environment. The additional passive vents were installed using the same high-quality stainless steel fittings for a consistent, corrosion-resistant finish.

Fresh Ventilation Australian-Made Subfloor Ventilation Systems

We Always Start by Mapping Out the Subfloor Space

Our System Design: Fresh Air is Drawn in Through Passive Vents (Yellow), with Crossflow Ventilation Across the Subfloor Space, and then Exhausted to the Outside (Black and Purple)

Onsite Designed Drilling Template to Ensure All Vents were Aligned at the Same Level

Core Drilling by Hand as the Drill Stands Couldn't Fit in the Narrow Space

The New Marine-Grade Stainless Steel Vents

Attention to Standards and Detail

The entire electrical installation was redone in compliance with AS/NZS 3000 wiring standards, with all cables clipped neatly and correctly. Every duct was securely supported at intervals of no more than 1.5 metres, as per best practice and manufacturer guidelines. The result is a professional, compliant, and long-lasting subfloor ventilation system designed to protect the structure from moisture, mould, and decay.

Australian-Made Centrifugal Subfloor Ventilation Fans

Finished Duct Ends for Support and to Prevent Deterioration

All Fans Ducted to Outside and Supported Every 1.5 Metres - Existing Line-of-Sight Electrical Cabling Can be Seen (This was Decommissioned)

Why Choose Fresh Ventilation for Subfloor Ventilation in Sydney

Australian-Made Fans and Components — Our exclusive green fans are manufactured locally and use German ebm-papst motors for unmatched performance and quiet operation.
5-Year Warranty — Every system we install is backed by a comprehensive 5-year warranty for complete peace of mind.
In-House Licensed Tradespeople — We only use our own licensed electricians and carpenters, ensuring every installation meets strict Australian Standards.
Premium Materials — All ducting and fittings are Australian-made, tested for quality, UV resistance, and longevity.
Proven Experience — We’ve installed thousands of systems across Sydney and New South Wales, helping homeowners protect their homes from damp, musty smells, and mould.

Contact Fresh Ventilation

If you need subfloor ventilation in Palm Beach or the Northern Beaches region, get in touch with our team today. We’ll assess your home and provide a free quote for a system designed specifically for your subfloor space.

Visit freshventilation.com.au to learn more about our Australian-made fans and ducted subfloor systems.

Subfloor Ventilation Palm Beach | Fresh Ventilation Sydney