SolarKing V4 Solar Roof Ventilation Fan

The SolarKing V4 Wireless Solar Roof Ventilation Fan is a high-airflow solar roof exhaust fan designed to help remove hot, stagnant air from residential and commercial roof cavities. With wireless remote control, automatic 25°C temperature control, multiple fan speeds, timer settings and optional mains power, the V4 provides convenient roof ventilation for both DIY homeowners and trade professionals.

Using solar energy during daylight hours, the SolarKing actively extracts hot air from the roof space to help reduce heat build-up and improve roof cavity ventilation.

How Does the SolarKing V4 Solar Roof Fan Work?

The SolarKing V4 uses a powered fan motor to actively extract hot air from the roof cavity. As hot air is removed, outside air can enter through suitable roof or ventilation openings, helping improve airflow through the roof space.

Unlike a traditional wind-driven whirlybird, the SolarKing uses a powered fan rather than relying solely on wind to create airflow.

The fan is designed to automatically operate when the roof space reaches approximately 25°C, helping provide ventilation when heat begins to build up.

Help Reduce Roof Cavity Heat

Australian roof spaces can become extremely hot during summer, particularly when direct sunlight heats the roof surface throughout the day. Excessive heat in the roof cavity can contribute to heat transfer through the ceiling and increase the cooling demand inside the home.

The SolarKing V4 helps by continuously extracting hot roof-space air during operation and replacing it with cooler outside air.

Reducing heat accumulation in the roof cavity can help create a more comfortable indoor environment and may help reduce the cooling load on air conditioning systems.

High Airflow Up to 2,100 CBM/h

The SolarKing V4 provides airflow of up to 2,100 cubic metres per hour (CBM/h).

This active mechanical ventilation allows the fan to move a significant volume of air through the roof cavity without depending on strong wind conditions.

Traditional wind-driven whirlybirds rely on natural wind movement, meaning their ventilation performance can vary depending on weather conditions. The SolarKing instead uses a powered fan motor to actively extract air whenever the operating conditions are met.

Wireless Remote Control

The V4 includes a wireless remote control that allows convenient operation without needing to access the roof.

Using the remote, you can:

• Turn the fan on or off

• Select ¼, ½, ¾ or full speed

• Set operating timers

• Manually override automatic temperature operation

• Adjust the fan's operating settings

This makes the SolarKing V4 suitable for homeowners who want simple control as well as tradies looking for a practical roof ventilation solution.

Automatic 25°C Temperature Control

The SolarKing V4 features automatic temperature control and is designed to activate when the roof space reaches approximately 25°C.

This temperature-based operation helps prevent the fan from unnecessarily removing warm air during cooler conditions. When the roof temperature falls below the operating threshold, the fan automatically stops.

The automatic function provides convenient set-and-forget roof ventilation while still allowing manual control through the wireless remote.

Solar-Powered Roof Ventilation

The SolarKing V4 uses solar energy to power the ventilation fan during daylight hours.

Solar-powered operation means the fan can actively ventilate the roof space using energy from the sun rather than drawing electricity from the home's mains supply during normal solar operation.

As sunlight decreases later in the day, solar-powered operation naturally reduces. For customers who require extended operation, the V4 can also be connected to an optional mains power supply.

Optional Mains Power for Extended Operation

The SolarKing V4 retains the DC power connection used by the V3 model and supports an optional 15V/240V AC power supply.

When connected, the system can automatically switch between available power sources:

Solar power → Mains power → Solar power

When sufficient sunlight is available, the fan operates using solar energy. When solar input becomes insufficient, the system can switch to mains power. Once solar input increases again, it automatically returns to solar operation.

The automatic temperature control remains active regardless of the power source.

Constant-Speed Motor

The V4 uses a constant-speed motor designed to provide smooth and consistent fan operation.

This helps minimise sudden changes in fan speed and provides stable airflow while the unit is operating.

Last-Setting Memory

The V4 Wireless model includes last-setting memory, allowing the fan to retain the speed setting selected through the remote control.

This feature is available without requiring the optional mains power supply to remain connected.

Anti-Mould Ventilation Function

The SolarKing V4 includes an anti-mould ventilation function designed to provide additional airflow when the fan has not been operating normally.

When no external power supply is connected, the unit can automatically activate during the day for approximately 15 minutes to ventilate the roof space.

This additional ventilation helps move stagnant air and can assist with managing moisture within the roof cavity.

Durable Roof Ventilation Construction

The SolarKing V4 has been updated with materials selected for durability in Australian roof environments.

The construction includes:

• Electroplated steel fan body

• Electroplated steel mounting brackets

• Aluminium roof flashing

• Aluminium fan cap

• Stainless-steel fasteners

These components provide a robust roof ventilation system while helping protect the unit against rust and corrosion.

Can Solar Roof Ventilation Help Air Conditioning Efficiency?

A hot roof cavity can contribute to the overall heat load of a home, particularly where ducted air conditioning ductwork is installed within the roof space.

By extracting hot air from the roof cavity, the SolarKing V4 can help reduce heat accumulation around the roof and ductwork.

This may help reduce the cooling load on an air conditioning system and support more efficient indoor cooling during hot weather.

Actual results will vary depending on factors such as roof design, insulation, ventilation openings, building orientation, weather conditions and installation.

Can Ceiling Vents Be Used With a Solar Roof Fan?

Yes, suitable closable ceiling vents can be used as part of a broader roof ventilation strategy where the building design allows.

For example, during a cool change, opening suitable ceiling vents while allowing cooler outside air to enter through windows or doors can help improve airflow through the home and roof cavity.

Ceiling vent placement should be considered according to the home's layout, roof design and existing ventilation. Professional advice may be recommended before installation.

SolarKing V4 for DIY Homeowners and Tradies

The SolarKing V4 is designed for both DIY and trade applications.

For homeowners, the wireless remote control, automatic temperature operation and solar-powered design make the system easy to manage.

For electricians, roof plumbers, builders and other trade professionals, the V4 provides a high-airflow powered ventilation option with multiple operating modes and optional mains power capability.

Always follow the manufacturer's installation instructions and appropriate roof safety procedures.

Looking for professional installation? We offer installation services across the Brisbane and Gold Coast areas. Please contact us on 1300 996 996 for more information and to arrange your installation.

SolarKing V4 Key Features

Features

• Increase comfort levels in homes and work places
• Reduce air conditioning costs
• Extracts 20x more air than a “Whirly Bird”
• Most powerful residential solar fan on the market
• Wireless RF Remote control with 20M range, control on/off, set speed, set timers and force the unit on
• Last setting memory without the optional power pack connected
• Free airflow design including air deflection cone to allow the unit to extract air more efficiently than other models
• Reduces roof temperatures by up to 30°C
• Solar Powered with DC power cable to connect to the optional 15V/240V power pack, the unit can continue to run when the sun goes down
• Thermostatically controlled means no heat loss during winter
• V4 design carries the updates of the improved V3 design Brushless DC motor with a constant speed design
• Aluminium top and flashing and V4 model has electroplated steel body, steel brackets and stainless steel fasteners to prevent rust
• Easy installation, no electrician required
• Automatic anti mould function
• Improves efficiency of ducted air conditioning systems by reducing the extreme heat penetrating ducting.
• Lightweight design also assists easy installation
• SolarKing is Australian owned and operated
• Suits tile, Colorbond and flat roofs
• 3 Year Warranty

Why Choose the SolarKing V4?

The SolarKing V4 combines solar-powered roof ventilation, high airflow, automatic temperature control and wireless operation in one system.

It is designed to help manage heat and stagnant air in roof cavities while giving homeowners and trade professionals greater control over ventilation.

With solar operation, optional mains power, multiple fan speeds, automatic temperature control and a durable construction, the V4 provides a practical roof ventilation solution for Australian homes and buildings.