29 Vandam St

Executive summary

The report opens with the decision, then lets the model data support it.

Use this page to state the recommended performance path in plain language: which variant is preferred, why it is technically viable, and where the remaining design risks live.

The starter report remains buildable before the first PHPP scrape. Edit project metadata in project.yaml, write the client-facing narrative in MDX, and let generated CSV data flow through data/.

Note Keep high-stakes caveats here: overheating risk, airtightness assumptions, certification path uncertainty, or cost/constructability tradeoffs that could change the recommendation.

Client: Yun Architects
Building: TBD
Location: TBD, TBD
Standard: TBD
Phase: Design Analysis
Report date: 2026-05-14

Energy model

Compare design variants against site energy, source energy, demand, and certification limits.

This page follows the BLDGTYP Standard mockup: a concise narrative lead, chart-first evidence, and tables that stay close to the PHPP-derived source rows.

Use the copy above each chart to explain the result, not to restate every number. The chart and table components below are pulled directly from the shared report kit.

Code MinimumImproved EnvelopeImproved HVACEnerPHit by ComponentEnerPHit by Demand

LossGain

Exterior tempDew pointSky temp

ResultLimit

Key results by variant
Metric	Units	Code Minimum	Improved Envelope	Improved HVAC	EnerPHit by Component	EnerPHit by Demand
Site Energy	kWh	24,285	20,780	20,838	18,325	15,772
Primary Energy	kWh	63,141	54,028	54,179	47,645	41,006
PER	kWh	33,311	28,082	28,083	24,363	20,840
CO2e	tonsCO2e	11.2	10.1	10.3	9.47	8.41

Certification result and limit rows
Metric	Units	Code Minimum	Improved Envelope	Improved HVAC	EnerPHit by Component	EnerPHit by Demand
Heat Demand heat_demand	kWh	18,509 limit 0	13,120 limit 0	11,305 limit 0	7,605 limit 0	5,675 limit 5,805
Sensible Cooling Demand sensible_cooling_demand	kWh	3,144 limit 4,354	3,110 limit 4,354	3,307 limit 4,354	3,466 limit 4,354	3,048 limit 4,354
Latent Cooling Demand latent_cooling_demand	kWh	547 limit 0	531 limit 0	593 limit 0	558 limit 0	468 limit 290
Total Cooling Demand total_cooling_demand	kWh	3,692 limit 0	3,640 limit 0	3,900 limit 0	4,023 limit 0	3,516 limit 4,644
Peak Heat Load peak_heat_load	W	11,095 limit 0	7,993 limit 0	8,170 limit 0	5,794 limit 0	4,896 limit 0
Peak Cooling Load peak_cooling_load	W	4,331 limit 2,564	3,701 limit 2,564	3,623 limit 2,564	3,233 limit 2,564	2,840 limit 2,564
PE Demand pe_demand	kWh	63,141 limit 0	54,028 limit 0	54,179 limit 0	47,645 limit 0	41,006 limit 0
PER Demand per_demand	kWh	29,881 limit 38,895	25,061 limit 30,768	25,086 limit 27,865	21,866 limit 22,350	18,744 limit 19,448
Phius Net Source Energy phius_net_source_energy	kWh	— limit 10,926	— limit 10,926	— limit 10,926	— limit 10,926	— limit 10,926

Model geometry

Establish the modeled building before comparing envelope options.

Summarize the enclosure strategy: target U-values, continuity of the control layers, thermal-bridge assumptions, and construction risks that affect Passive House performance.

Keep PHPP-derived values in the workbook. Use this section for interpretation, not a second source of truth.

Model geometry and building metrics
Metric	Units	Code Minimum	Improved Envelope	Improved HVAC	EnerPHit by Component	EnerPHit by Demand
TFA	ft2	3,124	3,124	3,124	3,124	3,124
Building Envelope Area	ft2	4,216	4,216	4,216	4,216	4,216
Vn50	ft3	25,626	25,626	25,626	25,626	25,626
Gross Volume	ft3	33,314	33,314	33,314	33,314	33,314
Envelope Area To TFA	ft2/ft2	1.35	1.35	1.35	1.35	1.35
Window Area (North)	ft2	334	334	334	334	334
Window Area (South)	ft2	206	206	206	206	206
Window Area (West)	ft2	0	0	0	0	0

Envelope and geometry assumptions
PHPP row	Section	Units	Code Minimum	Improved Envelope	Improved HVAC	EnerPHit by Component	EnerPHit by Demand
TFA geometry.tfa · row 316	Geometry	m2	290	290	290	290	290
VV geometry.vv · row 317	Geometry	m3	726	726	726	726	726
Vn50 geometry.vn50 · row 318	Geometry	m3	726	726	726	726	726
Building Envelope Area geometry.building_envelope_area · row 319	Geometry	m2	392	392	392	392	392
Gross Volume geometry.gross_volume · row 320	Geometry	m3	943	943	943	943	943
Window Area (North) geometry.window_area_north · row 321	Geometry	m2	31	31	31	31	31
Window Area (East) geometry.window_area_east · row 322	Geometry	m2	0	0	0	0	0
Window Area (South) geometry.window_area_south · row 323	Geometry	m2	19.2	19.2	19.2	19.2	19.2
Window Area (West) geometry.window_area_west · row 324	Geometry	m2	0	0	0	0	0
Window Area (Horiz) geometry.window_area_horiz · row 325	Geometry	m2	0	0	0	0	0
Floor BG envelope.floor_bg · row 328	Envelope	hr-ft2-F/Btu	17.9	17.9	17.9	19	25
Wall BG envelope.wall_bg · row 329	Envelope	hr-ft2-F/Btu	17.9	17.9	17.9	19	25
Party Wall envelope.party_wall · row 330	Envelope	hr-ft2-F/Btu	1.8	10	10	19	20
Wall AG envelope.wall_ag · row 331	Envelope	hr-ft2-F/Btu	31.3	31.3	31.3	31.3	45
Roof envelope.roof · row 332	Envelope	hr-ft2-F/Btu	38.5	38.5	38.5	38.5	45
Thermal Bridge Allowance (% increase) envelope.thermal_bridge_allowance_increase · row 343	Envelope	% Increase	0.3	0.2	0.2	0.15	0.1
Volumetric Air Leakage Rate (n50) envelope.volumetric_air_leakage_rate_n50 · row 344	Envelope	ACH@50	3	2	2	1	1
Envelope Air Leakage Rate (q50) envelope.envelope_air_leakage_rate_q50 · row 345	Envelope	m3/hr-m2	5.56	3.71	3.71	1.85	1.85
Window U-value envelope.window_u_value · row 346	Envelope	Btu/hr-ft2-F	0.27	0.24	0.24	0.19	0.17
Window SHGC envelope.window_shgc · row 347	Envelope	-	0.4	0.4	0.4	0.4	0.4

Assemblies

Show the construction logic behind the modeled R-values and psi-values.

Describe the roof, wall, slab, and foundation assemblies here. Reference thermal bridge simulations, psi-values, and constructability notes where they drive the recommendation.

ASSEMBLY DIAGRAMS · DETAILS · THERMAL BRIDGE REFERENCES

Windows

Use glazing data to connect performance, comfort, and summer solar control.

Use this section for window package assumptions, installed U-value, SHGC, frame strategy, shading, and comfort risks around large glazed areas.

WINDOW SCHEDULE · ORIENTATION · SHGC / U-VALUE COMPARISON

Mechanical

Keep systems assumptions legible without turning the client report into a schedule dump.

Record the ventilation concept, heating/cooling approach, DHW assumptions, and equipment sensitivities. For multifamily work, separate dwelling-unit ventilation assumptions from central plant and corridor/amenity assumptions.

SupplyExtract

Room airflow schedule
Room	Area	Volume	Supply high	Extract high	Supply med	Extract med
000ST-STAIR	35.3 ft2	289 ft3	0 cfm	0 cfm	0 cfm	0 cfm
001-CORRIDOR	149 ft2	1,223 ft3	0 cfm	0 cfm	0 cfm	0 cfm
002-GUEST ROOM / DEN	227 ft2	1,861 ft3	25 cfm	0 cfm	18.8 cfm	0 cfm
003-BATHROOM	173 ft2	1,416 ft3	0 cfm	25 cfm	0 cfm	18.8 cfm
004-HOUSEHOLD ROOM	84.5 ft2	693 ft3	0 cfm	25 cfm	0 cfm	18.8 cfm
005-LOUNGE	254 ft2	2,085 ft3	25 cfm	0 cfm	18.8 cfm	0 cfm
100ST-STAIR	25.5 ft2	209 ft3	0 cfm	0 cfm	0 cfm	0 cfm
101-CORRIDOR	168 ft2	1,382 ft3	0 cfm	0 cfm	0 cfm	0 cfm
102-LIVING ROOM	274 ft2	2,250 ft3	25 cfm	0 cfm	18.8 cfm	0 cfm
103-DINING ROOM	210 ft2	1,723 ft3	25 cfm	0 cfm	18.8 cfm	0 cfm
104-KITCHEN	237 ft2	1,945 ft3	0 cfm	50 cfm	0 cfm	37.5 cfm
200-CORRIDOR	87.1 ft2	714 ft3	0 cfm	0 cfm	0 cfm	0 cfm
200ST-STAIR	59.4 ft2	487 ft3	0 cfm	0 cfm	0 cfm	0 cfm
201-OFFICE	57.1 ft2	468 ft3	25 cfm	0 cfm	18.8 cfm	0 cfm
203-HER CLOSET	29.5 ft2	242 ft3	0 cfm	0 cfm	0 cfm	0 cfm
204-PRIMARY BEDROOM	190 ft2	1,561 ft3	0 cfm	50 cfm	0 cfm	37.5 cfm
205-HIS CLOSET	29.5 ft2	242 ft3	0 cfm	0 cfm	0 cfm	0 cfm
206-PRIMARY BEDROOM	202 ft2	1,654 ft3	25 cfm	0 cfm	18.8 cfm	0 cfm
Total	3,663 ft2	27,834 ft3	830 cfm	830 cfm	150 cfm	150 cfm

Appendix

Keep traceability available, but out of the primary decision narrative.

Appendix content should help reviewers connect report claims back to PHPP rows, source PDFs, and model assumptions without making the main client narrative too dense.

Energy summary by variant
Metric	Units	Code Minimum	Improved Envelope	Improved HVAC	EnerPHit by Component	EnerPHit by Demand
Site Energy	kWh	24,285	20,780	20,838	18,325	15,772
Primary Energy	kWh	63,141	54,028	54,179	47,645	41,006
PER	kWh	33,311	28,082	28,083	24,363	20,840
CO2e	tonsCO2e	11.2	10.1	10.3	9.47	8.41

Variant inputs and assumptions
PHPP row	Section	Units	Code Minimum	Improved Envelope	Improved HVAC	EnerPHit by Component	EnerPHit by Demand
TFA geometry.tfa · row 316	Geometry	m2	290	290	290	290	290
VV geometry.vv · row 317	Geometry	m3	726	726	726	726	726
Vn50 geometry.vn50 · row 318	Geometry	m3	726	726	726	726	726
Building Envelope Area geometry.building_envelope_area · row 319	Geometry	m2	392	392	392	392	392
Gross Volume geometry.gross_volume · row 320	Geometry	m3	943	943	943	943	943
Window Area (North) geometry.window_area_north · row 321	Geometry	m2	31	31	31	31	31
Window Area (East) geometry.window_area_east · row 322	Geometry	m2	0	0	0	0	0
Window Area (South) geometry.window_area_south · row 323	Geometry	m2	19.2	19.2	19.2	19.2	19.2
Window Area (West) geometry.window_area_west · row 324	Geometry	m2	0	0	0	0	0
Window Area (Horiz) geometry.window_area_horiz · row 325	Geometry	m2	0	0	0	0	0
Heat Demand Limit certification_limits.heat_demand_limit · row 363	Certification Limits	kWh/m2	0	0	0	0	20
Sensible Cooling Demand Limit certification_limits.sensible_cooling_demand_limit · row 364	Certification Limits	kWh/m2	15	15	15	15	15
Latent Cooling Demand Limit certification_limits.latent_cooling_demand_limit · row 365	Certification Limits	kWh/m2	0	0	0	0	1
Total Cooling Demand Limit certification_limits.total_cooling_demand_limit · row 366	Certification Limits	kWh/m2	0	0	0	0	16
Peak Heat Load Limit certification_limits.peak_heat_load_limit · row 367	Certification Limits	W/m2	0	0	0	0	0
Peak Cooling Load Limit certification_limits.peak_cooling_load_limit · row 368	Certification Limits	W/m2	8.83	8.83	8.83	8.83	8.83
PE Limit certification_limits.pe_limit · row 369	Certification Limits	kWh/m2	0	0	0	0	0
PER Limit certification_limits.per_limit · row 370	Certification Limits	kWh/m2	134	106	96	77	67
PHIUS Net Source Energy Limit certification_limits.phius_net_source_energy_limit · row 371	Certification Limits	kWh/m2	37.6	37.6	37.6	37.6	37.6