Split-level homes: which spaces belong in the volume calculation?
Before comparing airtightness results or planning heating equipment, reconcile the included spaces, air volume and exterior surfaces. A worked, explicitly...
Why ACH50 alone did not explain this home’s modeled heat-loss change
ACH50 rose 3.4%, leakage area at 10 Pa rose 7.6%, and modeled infiltration heat loss rose 9.3%. The differences show...
Heat-pump water heating: what this cost comparison actually shows
Rebuilding a 2024 modeled comparison puts the heat pump ahead of resistance electric, while gas remains cheapest under the study’s...
Why a whole-house heating load is not a room-by-room heating plan
Trace the heating load from the building to each room and the equipment serving it. A transparent wall-and-window example shows...