Do Whirlybirds Work

The Bureau of Meteorology just announced that 2018 was the third hottest year on record in Australia.

The hottest year ever recorded, was 2013, which narrowly just beat 2005.

What is the point?

If each year you are feeling like summer is getting a little bit hotter, the data is backing up your assumption. Heatwaves are getting more intense and property owners are wise in investing in heat reflective paint to prevent their homes and offices from becoming ovens. The roof space in a standard family home in Western Sydney can reach over 70 Celsius. This heat is trapped in the roof cavity and flows throughout the internal structures of your house.

Is air-conditioning the solution?

The Grattan Institute released a paper in 2018 highlighting that electricity prices rose in Sydney by 130% between 2015 and 2017. The report went on to say that high electricity prices are the new normal.

Even if you are not concerned with the carbon impact of operating your air-conditioner on max power during the hot summer months, the rising cost of electricity and the pressure this places on the family budget is motivation to research alternative cooling strategies.

Is it worth investing in a whirlybird?

Do Whirlybirds (Roof Ventilators) Work?

Whirlybirds provide an eco-friendly way of extracting heated air from the ceiling cavity. This heated air is replaced with fresh cooler air through the eaves which creates a more comfortable environment throughout the property. As whirlybirds are powered using natural convection and wind forces, they do not require electricity to operate.

But do they really work?

Here is what some property owners have noticed following the installation of whirlybirds:

We had 2 whirlybirds installed on our house about 18 months ago.

Wow! What a difference this has made to the comfort inside our house in the summer months.

We actually felt the difference in the house about half an hour after the installation. Because the hot air in the roof space had gone, it felt as if the house had lost a heaviness or headache from the top of the house. The air in the house felt lighter and cooler.

We have had these whirlybirds for two summers now. We do not come home on hot summer days to a sweltering top floor. On those days, the temperature inside the house is pleasant and light.

Since installing the whirlybirds, we have rarely used our air-conditioner in the summer months. Kim & June" Maroubra

I am very impressed with my whirlybird and the immediate difference it made to air temperature and promotion of breezes within the house.

Using a temperature gun I did a quick before and after. The interior ceiling temperature dropped from 33C (3pm day before) to 27C at the same time of day and there was a marked increase in airflow. The underside of the roof dropped from 43c to 35c the day after. The Brisbane spring weather was stable (calm, clear and 23C both days). - Lindsay -Brisbane.

Not only in theory, but also in practice, whirlybirds offer an economical and effective means of keeping your property cool during long hot summers.

Do whirlybirds really work? Absolutely, especially if they are teamed up with a fresh coat of heat reflective paint on your roof.

4 Essential Tips For Buying A Whirlybird

1) Choose A Whirlybird Designed For Australian Conditions

Not all whirlybirds are the same. If you buy a cheap imported roof ventilator you are only buying problems. Whirlybirds need to handle intense temperature variations due to their exposure to the elements. If there are any weaknesses in the construction of the design, it can lead to poor performance and a product that does not last long. Companies such as Twista, that design, test and manufacture their whirlybirds in Sydney, have perfected the ideal whirlybird for Australian conditions.

2) Ensure The Whirlybird Has Steel Bearings

While they are only small, the bearings are the most important element of the whirlybird. High-quality bearings ensure the whirlybird can effectively extract heated air from the roof cavity. Cheap inferior whirlybird models use plastic bearings that warp in the heat. Property owners from all over Sydney report that roof ventilators with plastic bearings are useless once they seize up in the heat. Not only do they not work effectively, but they are squeak and scream as the metal rubs on metal once the bearing fails.

To avoid this issue, choose a whirlybird like the Twista whirlybird that uses twin steel bearings. The all metal construction is made to last. With eight high-rise ribs and heavy-duty steel bearings the whirlybird operates silently and works effectively year after year.

3) Bigger Is Better

When you are researching which whirlybird is the best for your property, it is important that you understand the importance of turbine diameter. The amount of heat extracted by a roof ventilator is directly related to the diameter of the turbine. With a turbine diameter of 500mm, the Twista Grande offers exceptional performance with a bigger and stronger construction.

4) Install Enough Whirlybirds For Your Property Size

If you do not install enough whirlybirds for your property their will not be sufficient air extraction. Twista recommends installing one 500mm whirlybird for every 25m2 of roof space. If you buy direct from the manufacturer then you can enjoy massive savings.

Why Choose Twista Whirlybirds?

For over 20 years, Twista has been designing and manufacturing commercial roof ventilators and whirlybirds from their warehouse in Western Sydney. The team is passionate about providing their customers with the highest-quality whirlybirds in Australia. They never take shortcuts in the testing or manufacturing process, to ensure you are provided with the most durable high-performance whirlybird on the market.

If you are sick and tired of sweltering it out during long heatwaves, Twista is the team you can rely on for eco-friendly cooling. Slash your electricity bills and keep your house cooler in summer using natural wind forces.

To discover the complete range of whirlybirds and roof ventilators the team retails, visit the official Twista whirlybirds page today.

Twista Whirlybirds

Address: Ingleburn NSW 2565 Australia

Phone: 1300 797 714


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