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John Lewis
@john_lewis1s
Building Energy and Thermal Analysis Engineer
United Kingdom
English, Spanish, French
About me
I am a Building Energy & Thermal Analysis Engineer specializing in SAP calculations, thermal bridge analysis, ψ-value calculations, U-values, and heat-loss assessments. I provide accurate, detailed, and professionally presented calculations for residential and building projects, with a strong focus on energy efficiency and thermal performance. I can help architects, engineers, contractors, and property professionals understand and improve the thermal performance of their designs. I am committed to clear communication, attention to detail, and delivering reliable results on time.
Skills
John Lewis
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See my services
Civil & Structural
I will provide UK sap calculations, psi value and thermal bridge analysis for part l
Work experience
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Fiverr
Self-employed • 1 mo
Architectural Designer / CAD Technician
May 2026 - Jun 2026 • 1 mo
Experienced in architectural design and technical drafting for residential and building projects. I have worked on floor plans, elevations, sections, construction details, layouts, and other architectural drawings using CAD-based workflows. I can interpret architectural and construction information and develop clear technical drawings suitable for design development and documentation. My architectural experience also supports my building-energy work, allowing me to understand construction assemblies, junction details, building geometry, and the relationship between architectural design and thermal performance.
Building Energy & Thermal Analysis Engineer
Nov 2025 - Nov 2025 • 0 mos
Worked on building energy and thermal performance assessments, including SAP calculations, heat-loss calculations, U-value assessments, and thermal bridge analysis. Experienced in calculating and evaluating ψ-values for junctions and construction details, identifying areas of thermal heat loss, and supporting energy-efficient building design. I work with architectural and construction information to produce accurate, clear, and well-organized technical calculations and reports. My work focuses on improving building energy performance while maintaining practical and compliant construction solutions.
