Passive houses or eco homes are usually single family homes and are a trendy architectural solution to the problem of energy
consumption. They are self-sustaining houses,
which means that their energy consumption depends on natural sources.
Make the most of natural resources and respect the environment both
during construction and when built. The Sun is undoubtedly an
essential element in the solar house, as it depends on the lighting
and heating of the place.
appliances should be low-energy to not spend more energy than
necessary. Water is also an important factor, as rainwater is
collected and recycled as much as possible. This is the beginning of
these homes, everything that can be saved and reused. With an
abundant amount of sunlight available in India, the concept of
passive houses are gaining popularity. Functional since a year, the
Indira Paryavaran Bhavan in New Delhi is India’s first net zero
energy building that has been constructed with adoption of solar
passive design and energy-efficient building materials.
Which elements make
a passive house?
Own energy must be generated through passive solar house plans, for
example through solar panels. However, the home must also be properly
located to save energy in both heating and lighting.
As we have discussed, water is an essential factor. Devices that
economize the use of water and control it must be installed.
The chosen materials should be as natural and local as possible as
their transport should have a low impact on the environment. In
addition, avoid contaminating materials, such as plastic. These rules
not only affect building materials but also decoration, painting,
furniture and etc.
The windows should allow drafts of air to avoid using the air
conditioning in hot days.
If home is not well insulated, heating expenses will increase, which
will damage the environment and your pocket. The passive house should
be warm in winter and cool in summer.
How much does a
passive house cost?
eco bungalow in Bangalore can cost about INR 1,350 per square foot,
including construction and fittings. Home
owner Prasanto K Roy spent about INR 500,000 on India's first
certified eco-house in Delhi.
eco-friendly home also helps you get loans at cheaper rates. State
Bank of India charges lower interest rates for the first three years
for loans taken to purchase properties in green projects which reduce
carbon emissions and promote renewable energy. You also get other
incentives from the bank. With active support from the government and
the private sector, green buildings will soon become the norm. Even
today, corporate houses such as Infosys, Wipro and Tata have a policy
to occupy only green buildings.
What are the pros
and cons of owning a passive house?
There are numerous
advantages in living in this type of modern house. Aside from the
fact that you are helping the environment by lessening you and your
family’s carbon footprint, comfort and convenience are also
achieved. Living in such a home means that the temperature will be
the same throughout the year (slightly lower than usual, which is
probably between 29 and 30 degrees celsius, depending on how good the
planning of the project is), CO2 emissions are quite low and air
humidity is also always controlled, ideal aspects to maintain the
health and wellness of your entire family. At the same time, because
of reduced energy consumption, you are also able to save a lot of
money from your monthly bills.
The disadvantage of passive house is that the initial design and construction costs can be higher,
compared to a traditional building. For instance, the outer wall
thickness will vary depending on the site. The design is dependent on
the location and weather conditions. Owners need to consider the
utility savings against the cost of passive building materials. The
cost recovery begins immediately once the green building is occupied.
Like all new features in a building, there’s a learning curve for
- Occupants need to
learn how to operate controls.
- A back-up heating
system may be needed.
- Potential thermal
bridging threats exist.
Thermal bridges can
exist in the walls, floor, and the roof in all home designs. A
thermal bridge occurs when the insulation layer is displaced,
creating heat pockets. These pockets can cause uneven air
distributions. The problems can be prevented when working with an
expert in the design and detailing of the home.
What should I
consider when choosing ecological building materials?
If you need your passive house to be built in the shortest possible
time, it is best to use materials that can be manufactured in a local
must think both the price of the raw material and the cost of labour.
Also if we want brick we will need at least one expert operator who
will need days to place each piece. However, if we choose concrete we
will have to rely on transport from the cement factory or if we
decide the wood can be assembled in a few hours, but it could be more
The decision to use of a specific material should depend on the
location of the place itself. As we have said, the most important
principle of these homes is to take advantage of the natural
available resources. For example, in India, it is advisable to use
wood as it is easily accessible.
Where can I find
the ideal professional?
Here at homify we
connect the best architects, landscape designers and interior architects from India and all over the world with people who want to build, renovate or
redesign their homes.
In addition to finding
the perfect architect for the construction of your passive house,
here at homify you can browse one of the largest selection of images
related to architecture, decoration and home design, you can save and
collect them in different ideabooks for your inspiration and further