Passivhaus Standard ensures that a house always has plentiful clean fresh air. A ventilation system is required in most climates to comply with the standard. This means that even when it is cold and windy outside, or hot and dry, there is still fresh air silently and gently blown into the rooms of the house at a comfortable temperature. Windows and doors can still be opened whenever you want to, just like any other well-designed house. Equally important though, windows can be closed whenever you want to and there will still be plenty of fresh air throughout the house. More information about passivhaus ventilation can be found at this link.
To read more about the comfort aspects of the Passivhaus Standard follow this link.
The Passivhaus Standard provides a benchmark for what we should expect from a comfortable home.
The Passivhaus Standard: Radical Energy Efficiency
A house that is certified to the Passivhaus Standard uses very little energy to stay exceptionally comfortable all year round – and for you to do all the other things that you would expect to in your house. The Passivhaus Standard accounts for all the energy use in a house, from the heating and cooling, the cooking and lighting, through to TV and computer use.
The Passivhaus Standard ensures that your house uses very little energy because of the way it is designed and constructed. It does not rely on adding renewable energy generation systems to provide (or offset) some of your energy needs, although this is possible. It also does not rely on you making dramatic changes in your lifestyle to use less energy.
The result is that a house certified to the Passivhaus Standard could be using up to 90% less energy that an average house. And it comes with exceptional comfort, far better than an average house. Even compared to a typical new house, which is expected to be more energy efficient than average, a house certified to the Passivhaus Standard would expect to use up to 75% less energy. And this means power bills reduced by up to 75% also!
In the UK, an average medium sized house (approximately 80 square metres) can expect to have an annual energy bill of around £1,158.00, or £96.50 a month, according to UKPower.co.uk. A house the same size certified to the Passivhaus Standard would only have an annual energy bill of £115.80, or £9.65 a month. (This is very approximate as energy companies have standing charges that are usually fixed even if your energy usage is very low.)
To read more about how the Passivhaus Standard delivers radical energy efficiency by design follow this link.
The Passivhaus Standard provides a benchmark for how little energy we should expect to use in a comfortable and pleasant home.
The Passivhaus Standard: Reliable Quality Assurance
What good is a standard that doesn’t live up to its promises? The Passivhaus Standard is one of the very few sustainable design standards that has a robust and reliable track record of delivering what it promises – exemplary comfort and radical energy efficiency.
The Passivhaus Standard requires that the Passive House Planning Package (PHPP) be used to model the house and the energy use. The PHPP is a very detailed spreadsheet developed by the Passivhaus Institute. It reliably and accurately predicts how much energy will be needed to keep a house comfortable at the benchmarks set by the standard.
The Passivhaus Standard requires that an independent third party, the certifier, check the energy modelling (PHPP) as part of the certification process. They also check key aspects of the design including construction details.
The Passivhaus Standard also requires that the construction process is monitored to ensure what gets built matches the design accurately. Where changes are needed, the energy model and details need to be updated and checked also.
These all add up to a very robust quality assurance process. Designers and builders are more vigilant knowing their work will be checked and verified. And honest mistakes can be picked up and corrected before something gets built wrong!
To read more about the quality assu