Heard about the benefits of Passive House?
No? Well start here for a brief explanation: Passive House explained in 90 seconds
Put simply, this is a way of building that guarantees comfort and low energy bills. It is now an international phenomenon and has been proven to be effective for more than 20 years.
The keys to Passive House design are:
- A highly insulated thermal envelope
- Minimal thermal bridging – no ‘short-cuts’ for heat to escape, no cold spots for condensation to form on
- Excellent, thermally efficient windows – triple glazed timber or uPVC
- A leak-free building envelope – no draughts. A site verification of this is required – a blower door test
- High indoor air quality and thermal efficiency achieved via the use of a Heat Recovery Ventilation System (MHRV)
- Consideration to passive solar design – harvesting free heat from the sun while not overheating the building in summer
- Modelling to ensure that all the above have been achieved
A guaranteed internal temperature year round of 20-25 degrees, using around a 10th of the energy of a standard house.
This is achieved through:
- Detailed modelling using the PHPP (Passive House Planning Package)
- Simple forms – complexity makes a draught-free and thermal bridge free envelope harder to achieve
- Modelling junctions between elements to ensure they are thermal bridge free
- Verification and certification from the Passivhaus Institute
- Engagement of a Certified Passive House Designer from the outset of the project.
Passive House does not prescribe what materials or how the building looks, just the performance that the building must achieve. We have a selection of strawbale house plans, some of which can be certified. Contact us for a free consultation if you would like to know more about getting your project certified, or if you would like to use Passive House methodology for your project.
You can also download a free guide to Passive House design here:
Note: images from recent ehaus project, designed and built by Hiberna Ltd.
This project is not a certified Passive House, but designed and built using Passive House as a design tool.