Fresh VHC is an Australian distributor of Solar Whiz ventilation products.
The Solar Whiz roof ventilation whirlybird contributes directly towards the cooling of your home throughout the warmer parts of the year. With $0 running costs (solar powered versions), the Solar Whiz increases the comfort of your home whilst reducing your cooling costs.
What is the Solar Whiz Whirlybird?
The Solar Whiz whirlybird is a powerful roof ventilation and exhaust fan that operates completely without mains electricity. It is the ideal solar exhaust fan for roof ventilation and home cooling in summer and great for reducing moisture levels and condensation in the roof space in winter. Its superior performance, its ability to suit different climates and applications, its ease of installation, and a flexible design that specifically suits Australian roofs, have all underpinned the success for this solar roof ventilation system.
How Does the Solar Whiz Whirlybird Work?
The Solar Whiz roof ventilation whirlybird prevents heat build up in your roof space and reduces the heat load on your ceiling, preventing heat from penetrating into your living space. This results in lower roof space temperatures as well as lower internal temperatures. Solar Whiz roof ventilation provides your family with a more comfortable indoor living space, whilst potentially saving you hundreds of dollars on cooling costs, if you’re using air conditioning.
For the Solar Whiz whirlybird to be effective in removing heat or moisture, replacement air must be available. Replacement air is most commonly accessed via eave vents or ceiling vents. Heat or moisture may also be extracted directly from the living space via ducting to ceiling vents.
Reduce the Load on Your Air Conditioner
After installing a Solar Whiz roof ventilation whirlybird, the efficiency of your existing air conditioning system will also improve. Your air conditioner won’t need to work as hard when operating and the actual running time will be reduced, as you won’t need to run the air conditioner as often.
Solar Powered, Mains Powered or Solar Powered with Mains Boosting?
Solar Powered Solar Whiz whirlybirds provide the simplest operation (they run whenever the sun is out). The initial purchase cost is higher, but they are simpler to install and have no ongoing running costs. Their speed may reduce on cloudy days and they will not run at night. They have a solar panel on top of the fan housing.
Mains Powered Solar Whiz whirlybirds provide day long operation, regardless of whether it is sunny. The initial purchase cost is lower, but they require an electrician (or an existing power point in the roof) to install and have low ongoing running costs. Their speed will not reduce on cloudy days and they can run at night. They do not have a solar panel on top of the fan housing.
Solar Powered with Mains Boosting Solar Whiz whirlybirds offer the best of both worlds. In addition to a Solar Powered Solar Whiz whirlybird, a Constant Current Module is installed and connected to a power point in the roof. The Solar Whiz whirlybird will utilise all available solar power and top up any deficiencies using mains power. Their speed will not reduce on cloudy days and they can run at night. They have a solar panel on top of the fan housing.
What Size Solar Whiz Whirlybird Do I Need?
It depends on the size of your home and the size of its roof space:
- The RAF700 will provide enough ventilation for a standard pitched home up to around 90 square meters.
- The RAF900 will provide enough ventilation for a standard pitched home up to around 150 square meters.
- The RAF1400 will provide enough ventilation for a standard pitched home up to around 225 square meters.
- The RAF2100 will provide enough ventilation for a standard pitched home up to around 300 square meters.
All residential Solar Whiz whirlybirds require a 300mm roof penetration. The dimensions of the fan housing are the same for each model (but the higher capacity models have larger solar panels).
More Information: Solar Whiz Whirlybird Brochure (PDF Download).
Prevent heat loss during winter. The fixed thermostat is pre-set at 25 degrees celcius. The fixed thermostat should be installed in the roof space. The Solar Whiz whirlybird will not run unless the roof space is above 25 degrees celcius.
Prevent heat loss during winter. The adjustable thermostat is settable from 10 to 30 degrees celcius and has an On/Off switch. The adjustable thermostat can be installed in the roof space or on a wall in the house. The Solar Whiz whirlybird will not run unless the roof/house is above the selected temperature.
Constant Current Module (Mains Boosting)
Add night time operation to your Solar Powered Solar Whiz whirlybird. The constant current module will utilise any available solar power, before topping up any deficiencies with mains power. In addition to night time operation, this module also means that the Solar Whiz whirlybird will not reduce its speed on cloudy days.
The constant current module includes a 24V power pack. We recommend that you purchase an adjustable thermostat too so that the Solar Whiz whirlybird can be switched off when not required.
24V Power Pack
The 24V power pack is required to run a Mains Powered Solar Whiz whirlybird. It can also be used to modify an existing Solar Powered Solar Whiz into a Mains Powered Solar Whiz.
Bush Fire Rated Eave Vents
Maximise the efficiency of your Solar Whiz whirlybird by allowing replacement air to freely enter the roof space. Bush fire rated eave vents are unobtrusive and easy to install. They are covered in white powdercoat.
We recommend four to six eave vents per Solar Whiz whirlybird for maximum roof space ventilation.
Roof Cowls with Flashing
Not all houses have eaves (or they may be inaccessible or contain asbestos). In any of these instances, roof cowls are a suitable alternative. Roof cowls require a 150mm roof penetration and come with the required flashing.
We recommend two roof cowls per Solar Whiz whirlybird for maximum roof space ventilation.
Maximise the efficiency of your Solar Whiz whirlybird by allowing replacement air to freely enter the roof space. Ceiling vents require a 288mm cutout in the ceiling. They can be installed passively (without ducting) or connected directly (via 200mm flexible duct) to the Solar Whiz whirlybird. Ceiling vents can be closed during winter to prevent heat loss.
We recommend four passive ceiling vents per Solar Whiz whirlybird for maximum roof space ventilation.
We recommend one to four ducted ceiling vents per Solar Whiz whirlybird for maximum living space ventilation.
Bush Fire Rated Mesh
In bush fire prone areas, Solar Whiz whirlybirds should be bush fire rated. Standard Solar Whiz whirlybirds contain 4mm spaced mesh to prevent rodents and insects from entering the roof space. Upgraded bush fire rated mesh is 2mm spaced and stainless steel.
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