Sun Lizard Solar Heat Extractor --
How Effective Is It?
Works all day and night
Moves air at 6m3//min
100 Cooler in Summer
By removing up to 6m3/minute
of hot air and replacing it with cooler air from another
part of the building, your room will be up to 10 degrees
cooler during summer with the added benefit of better ventilation.
Reduces reliance on
Just a 2-3 degree change in
temperature through the movement of air is often sufficient
to eliminate the need for additional mains powered cooling.
A typical air conditioner used just during the hottest
summer days will use around 3000kw/h of energy per year,
representing approximately $420 in running costs and about
4 tonnes CO2E (brown coal power generation). The
solar heat extractor will eliminate the need for additional
cooling except on the very worst days. Payback would
be only a couple of years.
Keeps your building’s
thermal mass cooler
This simple system will not
only keep the air temperature in the building cooler but
also the building’s thermal mass, including the bricks,
tiles, furniture. Thermal mass when exposed to heat, absorbs
the heat and continue to radiate heat into the building
during the night. By keeping the thermal mass cooler through
our heat extractor, it reduces this heat from radiating
into the space you live and work in.
It is important to know how much sun you receive each day in
your local area. In most parts of Australia, during the hotter
months, there are around 8 hours of clear skies per day when
there will be sunshine to power the solar powered fans. In
winter this is about 5 hours. Most part of Australia get enough
sun to provide a significant amount of solar electricity for
To find the potential amount
of hours the Sun Lizard Solar
Heat Extractor can work for you in providing free cooling
and ventilation visit the Bureau
of Meteorology website,
where you can view maps of
the average daily sunshine hours for each area of Australia. From
there, you can observe the number of sunlight hours
received for your local area over each month, year
The following table gives typical results for the amount of
hours of clear skies per day received for all major centres.
Average Winter Sunlight Hrs
Average Summer Sunlight Hrs
(Oct – Apr)
Effectiveness in my own home or building
You can find out how well your building works with our Sun
Lizard Solar Heat Extractor by assessing your building’s suitability.
Clickhere for more details.
Otherwise please visit the Australian Greenhouse Office's website for
more details on making your home energy efficient.
The Sun Lizard
To Sun Lizard inventor Colin
Gillam explain how the
work for you
Australia Orders Key Sun Lizard Investor To Leave Country READ MORE