Executive Summary
In the following report, we have assessed the predicted performance of the
building in a variety of configurations. Based on these models, we think that
there is substantial room for improving the building's energy performance
over the code-minimum baseline. If these proposed improvements are incorporated into the
design, it does appear feasible that the building could meet the Phius Passive House
certification performance targets, although in this case we recommend targeting a
performance level slightly above the Phius limits.
We have outlined the details of this assessment
modeling and the key results within the following pages.
The primary recommendations include:
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Insulate all exterior walls to ~R-35, insulate the ground floor to ~R-30, and the roof to ~R-59
or above. For more information, see the building-envelope
section.
-
Use windows and door products which meet the Phius CORE requirements
for performance.
For more information, see the windows
section.
-
Implement Phius-level air-tightness solutions on all walls, ceilings and floors. For more
information, see the
air-tightness section.
-
Use a high-performance dedicated fresh-air ventilation system with heat and moisture recovery.
For more information, see the ventilation section.
-
Electrify all building mechanical systems including the heating, cooling, and domestic hot-water.
Click to read the full
report...
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