Passive House too difficult to achieve?
There are some instances where a client may decide that achieving a Passive House standard for new build or EnerPhit Passive House standard for retrofit is going to be too difficult but would still like to build or retrofit a low energy home that is a great improvement on the current building regulations.
Reasons for this may be because planning permission has already been granted for a building that was not originally designed as a Passive House and is unable due to constraints such as building shape (form factor) to be able to hit Passive House targets. Or in the case of an existing building the form factor, orientation, location, construction type and planning constraints may make EnerPhit impossible. Alternatively a chosen contractor or developer may not feel they have the experience or expertise to build a Passive House.
Building an “eco” house to no particular specification or guidelines can bring with it a host of problems such as under performance, overheating or air quality issues that would undoubtedly leave a client unhappy with the results. It is far better to design and build to a specific criteria and this is where alternative Building standards can be used as a measure of performance.