Raven Seals cut energy use by 50%!
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David Saunders, Architect of S2 Design undertook the task of not
only designing and building his own home, but also providing a
best-practice example of environmentally aware and sustainable
living. With specific focus on water and energy consumption, a
range of Raven door and window seals were installed throughout the
The energy consumption used to heat the home reduced instantly
by 50% with the installation of Raven door & window seals
throughout - that's a cost saving of around $1,200 per year! Since
Raven door & window seals are a cost effective solution to an
expensive problem, David found that the Raven seals throughout his
home will pay for themselves in less than 2 years.
Other particularly interesting sustainability elements of the
Water supply - 43,400 litres of water
is stored in 4 tanks in the basement to provide water for
everything except drinking. Current mains water usage is
~30 litres per day for a family of 4 people =
7.5 litres per person.
Hot water - Solar boosting supplies 100% of hot
water for around 70% of the year; the remaining heat is provided by
a gas booster.
Electricity - Overall electricity use is
minimal due to the incorporation of low energy consuming
appliances, lighting, efficient sealing and sensible lifestyle
practices. 50% of usage is currently subsidised by only
seven solar panels.
Air conditioning - is not required in this
house due to the combination of high levels of thermal insulation,
double glazing with Argon insulated air gaps and the application of
simply passive solar principles to ecourage natural
heating and cooling.
Lighting - Skylights, windows, glass walls and
glass floors allow natural light to flood the entire house. At
night, ambient light from the moon, stars and three surrounding
street lights is supplemented by LED and compact fluorescent
Heating - is mainly from the sun and
supplemented by a highly efficient gas
boosted hydronic radiator heating system. The heating
system is monitored by a 'Nest' which documented during the last
month of Winter we used 30 hours [total] of heating i.e. around one
hour per day to maintain minimum temperatures of 16 degrees Celsius
overnight and 18 during the day.
Cooling - There are three separate cooling
systems in place: 1. Air is pumped from the cool basement up to the
top level living area via an electric fan. 2. Cool humidified air
is drawn from the two internal rainforests. 3. Ceiling fans push
warm air out through high level windows thus drawing cool air into
the house from the ground level courtyards.
Ventilation - Venturi, stack and
convection based systems are used to encourage natural air flow,
draw fresh air throughout the house and supplement the assisted
cooling and heating systems.
Even after the application of all of the above sustainable and
energy wise products and processes, David was able to achieve a
further reduction of energy use instantly with the installation of
Raven Door & Window Seals.
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Generally speaking, products designed to reduce energy consumption
such as solar panels, double glazing and insulation require a huge
financial investment. The installation of Raven door & window
seals achieves outstanding results at a minimal cost whilst also
increasing the comfort of occupants by reducing the intrusion of
draughts, noise and dirt intrusion in the home.