Mould, timber rot, rising damp and pests all start the same way: stagnant moisture trapped under your home. Airtex designs and installs sub-floor ventilation systems that fix the problem properly.
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5-Year
Parts and labour warranty on every install
Half Day
Typical installation time for most homes
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Warning Signs
These are the most common signs Sydney homeowners call us about. If you recognise any of these, get it looked at sooner rather than later. Moisture damage gets worse every week it is left.
Sign 01
Musty Smell Indoors
Sign 02
Soft or Bouncy Timber Floors
Sign 03
Mould at Skirting Board Level
Sign 04
Worsening Allergies at Home
Sign 05
Termite Activity
Sign 06
Pre-1980s Home with Raised Floors
How It Works
Sub-floor ventilation uses fans and ducts installed under your home to pull damp stale air out and bring fresh dry air in from outside.
In Sydney, ground moisture constantly evaporates up into the crawl space under your home. Without proper airflow, it stays trapped. That creates the conditions for mould, timber rot and pests.
A properly designed system runs on a timer, typically 6 hours during the warmest part of the day. Most homeowners notice the smell is gone within two weeks.
Subfloor Ventilation cost
Modern sub-floor fans use 40 to 80 watts, similar to a light bulb. Running 6 hours a day costs less than $80 a year.
Why Airtex
A fan stuck on the wall without a proper assessment rarely fixes the whole sub-floor. We go under the house and assess it properly before recommending anything.
01
Physical Sub-Floor Inspection
02
Custom System Design
03
Licensed Electrical Work Only
04
5-Year Parts and Labour Warranty
What’s Included in Every Installation
✓ Sub-floor moisture assessment
✓ Custom system design for your layout
✓ Licensed electrical installation
✓ Timer configured and system tested
✓ Written report and compliance certificate
✓ 5-year parts and labour warranty
Half Day
The Process
Straightforward process, done in a day for most Sydney homes.
01
Assessment
02
Written Quote
03
Installed and Done
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FAQ
Everything you need to know about sub-floor ventilation. Still unsure? Call our team directly.
A properly designed and installed system typically costs between $1,500 and $3,500 depending on the size of your sub-floor. We provide a written quote before anything starts.
Most installations take half a day, around 3 to 5 hours. Larger or more complex sub-floors can take a full day. We will tell you exactly how long when we come out to assess.
Most homeowners notice the smell reducing within the first week and gone within two weeks. The worse the moisture problem, the longer it takes. Either way the improvement is usually noticeable quickly.
In most cases, yes. Poor airflow and ground evaporation are behind most sub-floor moisture problems. We will assess honestly and tell you upfront if ventilation alone will fix your situation.
Rarely. A fan on the wall only moves air in the area immediately around it. The rest of the sub-floor, especially behind internal walls, stays damp. More than 75% of homes we visit already have basic vents that have not made a difference.
Yes. All sub-floor fan installations involve licensed electrical work. Every Airtex job includes a Certificate of Electrical Compliance and a 5-year parts and labour warranty.
Getting it assessed costs you nothing. Leaving it costs a lot more. Call us and we will give you an honest answer about what your home needs.
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