Underfloor Ventilation to Reduce Moisture and Protect Your Home

Installation of underfloor fans and ventilation systems to manage moisture and protect your home's structure.

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Underfloor Ventilation Services

Keep your subfloor dry and your home protected

Damp subfloors can lead to mould, musty smells and long-term structural damage. We install underfloor ventilation systems that keep air moving and moisture under control.

Underfloor fan installation

Ducted subfloor ventilation systems

Humidity sensor and automatic controller setup

Vent installation through brickwork or walls

Wiring and power supply for underfloor fans

Timer-controlled ventilation systems

Replacement of old or faulty subfloor fans

Ventilation assessments for damp or poorly ventilated homes

Reliability

You can count on us to be there when we say we will, and to get the job done right the first time.

Integrity

We believe in honesty and transparency in all our dealings. We provide upfront pricing with no hidden costs.

Cleanliness

We take care to leave your place cleaner than we found it. Dust sheets, boot covers and more so we don’t leave a trace.

Quality

Our commitment to excellence ensures that every job is completed to the highest standard.

Dealing with a damp or musty subfloor? Get a quote in minutes.

Whether it's a small repair or a major installation, we'll provide you with a detailed quote so you know exactly what to expect.

Why Underfloor Ventilation Matters

Poor subfloor airflow allows moisture to build up, creating the conditions for mould, wood rot and musty odours throughout the home. We install ventilation systems that keep air circulating and moisture levels down.

  • Reduces risk of mould and timber rot
  • Helps protect structural timber and flooring
  • Improves air quality inside the home

Learn More

Ventilation Solutions We Install

We install and wire a range of underfloor ventilation systems, including:

  • Electric underfloor fans, single or multi-fan systems
  • Humidity-sensing controllers that activate fans automatically
  • Ducted systems for homes with limited subfloor access
  • Additional venting through external walls

Not sure if your subfloor needs ventilation? We can assess airflow and moisture levels and recommend the right solution.

FAQs

Got a question about Underfloor Ventilation?

Need to know about something specific? You can always reach out to us and we’ll let you know.

How do I know if my home needs underfloor ventilation?

Signs include musty smells, visible mould, damp timber flooring or condensation in the subfloor. We can inspect your subfloor and recommend a suitable system.

Do underfloor fans run all the time?

Not necessarily. Many systems use humidity sensors or timers so fans only run when needed, which helps manage running costs.

Can underfloor ventilation help with mould inside my home?

Yes. Improving subfloor airflow reduces the moisture that contributes to mould and damp issues in floors and walls above.

Do you install ventilation in older homes?

Yes, we regularly install underfloor ventilation in older homes with limited or blocked airflow, including running new wiring and vents where needed.

Our Process

Simple and Up-Front Servicing

We keep our process simple so that you know what's happening every step of the way.

Tell us what you need

Send us a quote request or give us a call and let us know how we can help.

We’ll give you a no obligation quote

We’ll send you a quote that won’t change. No hidden fees and no surprise bills, our pricing is upfront.

Lock in the appointment

We’ll organise a time that works best for you, then send you a booking reminder the day before.

We’ll get to work

We'll send you a message when we're about to leave with a tracking link so you can stay in the loop all the way to job completion.

What our customers say

I am very happy with the electrical work Max has done for my home  today. He installed 4 powerpoints, one Wall Exhaust fan  and replaced 5 safety switches and 1 faulty light switch.  He is very polite and he did a great job. The price are reaconable. I highly recommend him to anyone who needs professional and friendly service. I will definitely call Max again for any future electrical work!

John Pu

I’m very happy with the service. Max (the electrician) was polite, friendly, and very reasonably priced. He took the time to properly diagnose the issues and explained everything clearly. The work was done efficiently, and I really appreciated his honest approach. I would definitely use him again and recommend him to others.

Nanik Lubbers

Max was a pleasure to deal with. He was prompt to respond to any queries, Clearly explained all the work required and very professional in his approach. Would highly recommend.

Chris B

Max was easy to deal with and very professional. He showed up on time, explained everything clearly, and did a great job.

Really happy with the quality of his work and would happily recommend him to anyone needing a reliable electrician.

Daniela Albanese

Max has been fantastic from the start- clear in his communications, on time; never late, very respectful and had listened to our concerns and provided his expert advice and suggestion that was best suited to our needs. His pricing was competitive and fair, quotes were transparent and there were no surprises along the way. We liked his honesty and how he took on the project seamlessly.

Nathania Lee

Very happy with Max. Great communication, reliable, easy to work with and troubleshooted unplanned issues, clearly explaining them and offering other solutions. Would not hesitate to use his services again.

Anja

Professional, personable, polite and punctual are just four words that spring to mind when describing the work of Max in attending to our household electrical issues. Max listens, he advises, and he attends to the electrical work as a person focused on quality service.

Peter Brophy

Max has done electrical work at my house on several occasions. He is efficient, knowledgeable, and very professional. His email/text communication is excellent. I would recommend him for household electrical jobs.

Stuart Browne

I recently had new lighting installed by 99 Electrical and couldn’t be happier with the result. Max was fantastic to deal with from start to finish, professional, friendly, and incredibly knowledgeable. Max took the time to explain the options available, completed the installation efficiently, and made sure everything was finished to a very high standard.

Nicola Britchford

Max has been fantastic, providing a clear understanding of cost and time and came up with some great suggestions on various options to consider which were undertaken. Would definitely recommend Max as a professional electrician.

Brian Glover

Max from 99 Electrical has done a couple of jobs for me now. I highly recommend this company.I am very happy with the workmanship. Everything was done on time, it was competitively priced and nothing was a hassle for Max. It is rare to find this level of excellence.

Lillyann Preston

Always expect, and get, first class service from Max at 99 Electrical. He is most considered of a customer's needs and questions, and delivers a great job. Always on time too!

Linda Wake
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Stay informed with expert advice

Safety
Home Improvement

Subfloor Ventilation, Reduce Damp and Mould Risk at The Source

Musty smells under timber floors in Manly, Narrabeen, or Lane Cove are a sign that moisture is hanging around where air does not move. Left alone, damp air can feed mould, swell skirting boards, and make rooms feel sticky even when the weather is mild.

Service Areas

Servicing Sydney's North Shore and Northern Beaches

We specialise in residential electrical service and maintenance across Sydney’s North Shore and Northern Beaches.

Just outside our range?

No worries, give us a call and we’ll see if we can get to you.