Whirlybirds - Are They Worth It?

This is the 1 million dollar question. There are so many different ventilation options on the market nowadays that it can be difficult to make the right choice. Here is some advice that may help you to come to a decision.

Who Uses Whirlybirds?

Whirlybirds are used by small homeowners to large commercial buildings. The beauty of them is that they are easy to install, require no maintenance and the benefits can be felt immediately. Twista offers Industrial Factory Vents which are 750mm in diameter, 413% larger than standard whirlybird vents. They feature 32 dual ribbed vacuum blades which deliver high speed rotation. Also they are equipped with 12-16 upper and lower support arms which offer a more sturdy and balanced rotation and offer higher protection against strong winds.

Many people use powered whirlybirds. Although these are very effective, they also defeat their purpose a bit as they use electricity to run. Twista whirlybirds unique design uses the hot air that rises from your roof to make the turbines move, expelling air even on a windless day.

Another feature of Twista whirlybirds is that they are 100% waterproof. When in motion, the whirlybird’s circular force deflects raindrops ensuring none of it gets into your roof space.

How Affordable Are Whirlybirds?

Budget whirlybirds can be picked up for less than $100 nowadays and even as low as $60. However, beware of cheap whirlybirds as the saying, 'you get what you pay for ', definitely applies here. Cheap whirlybirds are notorious for leaking and breaking down. Due to the inferior materials and bearings used they require a lot of maintenance and repair, especially when punished by the NSW weather. You must have heard the whirlybird 'squeak' in your neighbourhood, it's enough to drive you mad! Twista whirlybirds are totally silent, made from an all-metal construction with heavy-duty, all-steel bearings to support the rotating head of the ventilator, which is further supported by eight high-rise ribs.

Do they save energy?

We've all seen electricity prices rise over the past couple of years, with 2017 seeing Australia as having the highest energy prices in the world! Many reports state they rose to record highs in the first quarter of 2019 and this trend is expected to continue in the future. The states with the highest electricity rates are South Australia, NSW, Queensland and Victoria. With the government's new price-capping regulations announced in February 2019 many are wondering how to find better ways to decrease their energy bills.

Here is a table (courtesy of https://www.abc.net.au) highlighting the cheapest retail offers in Queensland.

Whirlybirds are the perfect solution to reduce your electricity bills. No maintenance, easy and cheap installation, hassle free, totally silent and extremely cost effective. To find out more information as to why Twista Whirlybirds are unique, give us a call on 1300 888 151 today and find out why more and more people across Queensland and NSW are getting Twista Whirlybird ventilators installed.

Can I Install Whirlybirds Myself?

Yes, DIY installation is possible which will save you on installation charges.

There are many installation guides on the internet, just Google whirlybird installation and you will find a plethora of guides and videos. Basic tools that are needed are ladders, a drill and extension cable, good marking pen, angle grinder or tin snips to cut through your roof (providing it's metal), socket to drive tek screws, additional flashing or ridge cap position fitment, sealing washers and waterproofing material.

Whilst it is possible to do a DIY install it is highly recommended to seek out a professional due to the risks of working on roofs. Every year in Australia, sadly an average of 29 people die from work-related falls, and these are people who are trained to work at heights. Half of the fatal falls involved distances of three metres or less!

Don't risk injury or death to save a few bucks, why not give Twista a call today for a free quote to find out just how affordable whirlybird installation really is.


Solar powered roof ventilators are probably the best alternative to whirlybirds. Solar roof fans can be installed wherever there is sunlight, but obviously they perform best on the part of the roof where the sun shines directly for the longest part of the day. Living in NSW, one thing is guaranteed, sunshine and plenty of it! Solar roof ventilators run very quietly so no squeaky or grinding noise to be heard. Many people prefer solar roof ventilators because of their sleek and less obtrusive design. Some say that a solar roof fan can remove as much as 10 times more hot air than conventional whirlybirds. This has to be counter balanced with the fact they cost about 5x more. Another factor is that they only work during the day, although this is when the sun is beating down and our roofs are at their hottest, a lot of heat accumulates and stays within the roof space at night causing temperatures of up to 30 degrees.

Another common alternative are ridge vents. According to Wikipedia, 'A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings'. Normally ridge vent systems run the full length of the roof, meaning the entire peak must be cut away, which can make the installation more expensive than installing a turbine. Also they don't provide as much airflow as as whirlybirds.

Ultimately you have to weigh up the pros and cons of different ventilation systems. Whirlybirds are the most common solution due to their cheap cost and easy installation and overall effectiveness. Twista whirlybirds cut out some of the problems experienced by conventional whirlybirds, such as noise factor - the Twista whirlybird is silent; ineffectiveness on windless days - the Twista whirlybirds unique system doesn't rely on wind power but can work from the hot air rising from your roof. This allows them to work 24/7 even removing hot air at night that has built up during the day.

Give Twista a call today to find out why more and more people in NSW are having Twista whirlybirds installed on their properties.