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About
Sefaira is a cloud-based building performance analysis platform designed for architects and building designers who want to embed sustainability into the conceptual and schematic design phases. Fully integrated with SketchUp, Sefaira allows users to model simple geometry and immediately run energy, daylight, and thermal comfort analyses without the typical wait times associated with traditional simulation tools. Powered by industry-accredited engines EnergyPlus and Radiance, Sefaira delivers credible hour-by-hour annual simulations that measure energy use, carbon emissions, daylight levels (including Spatial Daylight Autonomy), operative temperatures, and preliminary HVAC sizing. Designers can compare multiple massings, layouts, and envelope strategies to shortlist the best-performing concepts early — before costly changes become necessary. The platform supports team collaboration through a cloud-based environment, allowing peer review of results and cross-firm project sharing. Results are presented with compelling, easy-to-understand visualizations that help communicate performance benefits to clients and stakeholders. Sefaira benchmarks performance against ASHRAE and other industry standards, giving design teams confidence that their projects are on track for energy and comfort goals. Sefaira is available for professional use and higher education institutions, making it suitable for both commercial architectural practices and academic design programs seeking integrated sustainability workflows.
Key Features
- Annual Energy Simulations: Run full hour-by-hour annual simulations powered by industry-accredited EnergyPlus engine, delivering energy use and carbon emissions insights in minutes.
- Daylight Analysis: Evaluate Daylight Factor, Direct Sun Exposure, and Annual Daylight outputs including Spatial Daylight Autonomy (sDA) to optimize building daylighting strategies.
- Thermal Comfort Assessment: Assess operative temperatures and the impact of shading and window openings on indoor air temperature and occupant comfort.
- HVAC Sizing & Assessment: Quickly evaluate how architectural features affect HVAC system sizes and generate preliminary sizes for more accurate early cost estimation.
- Cloud-Based Collaboration: Share projects, peer-review results, and collaborate across teams and firms using Sefaira's cloud-based platform with compelling visual outputs.
Use Cases
- Comparing multiple building massings and envelope configurations at the conceptual design stage to identify the most energy-efficient option.
- Conducting daylighting analysis to optimize window placement and shading strategies for Spatial Daylight Autonomy compliance.
- Assessing natural ventilation and HVAC system performance to guide early mechanical engineering decisions and cost estimates.
- Sharing interactive performance visualizations with clients and stakeholders to build consensus around sustainable design proposals.
- Benchmarking building designs against ASHRAE energy and comfort standards to ensure regulatory compliance and sustainability certification readiness.
Pros
- Fast Results at Early Design Stages: Delivers building performance results in minutes rather than weeks, enabling meaningful analysis during conceptual and schematic design phases.
- Industry-Accredited Simulation Engines: Uses EnergyPlus and Radiance — the gold-standard engines — ensuring results are credible, defensible, and aligned with professional standards.
- Seamless SketchUp Integration: Works directly within the SketchUp environment, allowing architects to run analyses without switching tools or reformatting geometry.
- Team and Cross-Firm Collaboration: Cloud-based platform makes it easy to share, review, and iterate on building performance data across teams and multiple firms.
Cons
- Tied to SketchUp Ecosystem: Best functionality requires SketchUp, limiting access for design teams using other 3D modeling platforms like Revit or Rhino.
- Subscription Cost: Sefaira is a paid subscription product, which may be a barrier for smaller firms, independent architects, or students without institutional access.
- Focused on Early-Stage Analysis: Optimized for conceptual and schematic design phases; may lack the granularity needed for detailed design or construction documentation-level analysis.
Frequently Asked Questions
What is Sefaira used for?
Sefaira is used for early-stage building performance analysis, including energy use, carbon emissions, daylight, thermal comfort, and HVAC sizing. It helps architects and designers make informed sustainability decisions from the very start of a project.
Does Sefaira integrate with SketchUp?
Yes, Sefaira is deeply integrated with SketchUp. Users can model geometry in SketchUp, run Sefaira analysis directly, and get results without leaving their design environment.
What simulation engines does Sefaira use?
Sefaira uses EnergyPlus for energy and thermal simulations and Radiance for daylight analysis — both are industry-accredited engines widely trusted in the architecture and engineering fields.
Can teams collaborate on Sefaira projects?
Yes. Sefaira is a cloud-based platform that supports team collaboration, peer review, and cross-firm project sharing, making it suitable for distributed design teams.
Is Sefaira available for students and educational institutions?
Yes, Sefaira offers plans specifically for higher education, making it accessible to architecture and engineering students and academic institutions.
