Know exactly how your building will perform before construction starts.

Projects that lock HVAC and envelope decisions before running a performance model routinely leave $38,000+ a year in avoidable energy cost on the table. Run a full performance simulation while your design is still flexible, not after the building is built and metered.

Performance Snapshot

Modeled EUI 28.4 kBtu/sf/yr
Peak HVAC load 18.4 tons
Annual energy cost $84,200.00
Modeled-vs-actual accuracy 96.3%

Illustrative data, not a real project. Swap for a real product capture once available.

Every performance question, answered before you build.

One model, run before your HVAC and envelope choices are locked in, not after.

Simulate performance in minutes, not months

Run a full whole-building energy simulation (HVAC loads, envelope performance, annual energy use) in minutes. A traditional energy-modeling consultant takes weeks to deliver the same analysis, and can't re-run it for free every time your design changes.

~6 min
Buildwiser
4–8 wks
Energy consultant

Illustrative comparison, not a measured benchmark.

Project Intake

Climate zone3C
Weather fileSan Diego Intl (TMY3)
Building typeMultifamily: mid-rise

Matched to your exact site, automatically

Climate zone, the correct TMY3 weather file, and your building type are matched the moment you enter a project address: no manual lookup, no guessing which weather station applies.

Watch performance numbers update as you design

Peak HVAC load, envelope U-factor, and annual energy use update live as you adjust the model, not delivered three weeks later as a static PDF.

Live Performance Check

Peak HVAC load18.4 tons
Envelope U-factor0.048
Annual energy use612,400 kWh

Modeled vs. Actual

Modeled annual use612,400 kWh/yr
Metered actual598,900 kWh/yr
Variance2.2%

See how the model holds up after occupancy

Once the building's live, Buildwiser compares your modeled performance against metered utility data, so you know exactly how close the prediction landed, not just at handoff.

Compare design options before you commit

See modeled energy use side by side across envelope and system choices (code-minimum glazing vs. high-performance, gas-fired vs. heat pump), so you know which decision actually moves the number before it's locked in.

Scenario Comparison

Code-minimum envelope612,400 kWh/yr
High-performance glazing548,900 kWh/yr
Heat pump + glazing upgrade489,300 kWh/yr

Performance Documentation

Energy model exportAttached
Performance certificateGenerated
Compliance summaryAttached

Generate your performance documentation automatically

Every export a permit reviewer, lender, or investor asks for (energy model files, performance certificates, compliance summaries), generated directly from your model, not assembled by hand.

  • Performance certificates, generated automatically
  • Energy model exports, permit-ready format
  • No separate modeling consultant required
0.0%
Average modeled-vs-actual accuracy
Across every performance model verified against metered utility data (illustrative, pending real reporting).
0%
Average kWh/yr reduction identified
Comparing code-minimum baseline to the best-performing modeled scenario, per project (illustrative, pending real reporting).

Frequently asked questions

What software or methodology backs the model?

Performance Modeling runs a full whole-building energy simulation (not a static spreadsheet estimate), modeling HVAC loads, envelope performance, and annual energy use against ASHRAE 90.1 Appendix G methodology and your local energy code baseline.

How accurate is it compared to as-built performance?

Modeled results track within 4% of actual metered energy use across verified projects to date (illustrative, pending real reporting). Accuracy improves further once equipment specs and construction details are finalized closer to permit.

Can I compare multiple design options?

Yes. Run envelope, system, and equipment options side by side and see modeled energy use for each before you lock in a decision: every scenario re-runs automatically the moment you change a spec.

Does this replace an energy modeling consultant?

For most design-phase decisions, yes. Your model already covers what a consultant delivers. Projects with unusual system types or a non-standard compliance path may still need a licensed consultant's stamp; check with your jurisdiction.

What happens after my first model?

Your performance model saves to your account immediately, with the full results ready to review, export, or share with your team whenever you need it.

Know your pathway before you break ground.

Free directional numbers in minutes, no call required.