Delta Air Solutions supplies and installs inline extractor fans for bathrooms, ensuites, laundries and kitchens in Hamilton and across the Waikato. The fan sits in the ceiling space and is ducted to the outside, so it is quieter and stronger than a small wall fan. Our registered electrician does the wiring.
In this article6 sections
Showers, cooking and drying washing put a lot of moisture into the air. If it can’t get out, it ends up as condensation, mould and musty smells. A good extractor fan takes the steam out at the source, before it spreads through the house.
What an inline fan is
An inline fan sits in the ceiling space rather than in the room. A grille in the ceiling draws the damp air up, and a duct carries it to a vent outside, through the soffit, the roof or an outside wall. Because the motor is away from the room, it is quieter, and it can move more air than a small through-the-wall fan.
Sizes and speeds
Inline fans usually come in 100mm, 125mm, 150mm and 200mm sizes. A bathroom or laundry usually suits 100 to 150mm, and a kitchen or a larger space 150mm or more. Two-speed fans run quietly on low and boost on high when the shower is running. A timer or humidity control can keep the fan running for a few minutes after you leave the room.
Always ducted outside
Damp air must go outside, not into the roof space, where it would condense and cause damp, mould and damage in the ceiling. We plan the duct route to keep it short and tidy, with a weatherproof vent and insect screen outside.
Rentals and Healthy Homes
The Healthy Homes ventilation standard requires an extractor fan vented to the outside in every kitchen and in every bathroom with a shower or bath. We can install fans in rentals as part of getting a property ready. See our Healthy Homes heating guide for the heating side.
Part of a dry, healthy home
Extractor fans deal with moisture where it is made. For a home that is damp throughout, they work best together with whole-home ventilation and good heating. See how to stop condensation and our ventilation solutions.
Areas we cover
We install extractor fans in Hamilton, Rototuna, Cambridge, Te Awamutu, Morrinsville, Ngāruawāhia, Huntly and the rest of the Waikato, often together with a heat pump or a ventilation system.
Frequently asked questions
Can an extractor fan vent into the roof space?
No. Damp air should always be ducted to the outside. Venting into the roof space causes condensation, mould and damage in the ceiling.
Is an inline fan quieter than a wall fan?
Usually, yes. The motor sits in the ceiling space away from the room, and a two-speed fan can run quietly on its low setting.
What size extractor fan do I need for a bathroom?
Most bathrooms and laundries suit a 100 to 150mm inline fan, and kitchens 150mm or more. We check the room and the duct route before recommending one.
Do rentals need extractor fans?
Yes. The Healthy Homes ventilation standard requires an extractor fan vented outside in every kitchen and in every bathroom with a shower or bath.
Areas we coverHamilton & WaikatoRototuna, Flagstaff & HuntingtonCambridge, Te Awamutu & TamahereMorrinsville, Matamata & Te ArohaNgāruawāhia, Taupiri & HuntlyAucklandTauranga & Bay of Plenty
Ready for a comfortable home all year?
Book a free assessment and get a fixed-price written quote for extractor fans in your home.