Guides for energy experts
Practical guides written by Dieter Vanwetter, certified Type A energy expert (EP18784 & EP18782). Each guide is based on dozens of real EPC files and focuses on concrete time savings in your daily practice.
Faster VEKA entry: from 2h to 15 minutes
Practical guide on structurally speeding up VEKA data entry. Three bottlenecks, concrete solutions and numbers from a 30-day test.
IP2025 photo checklist: all mandatory categories
Complete overview of what IP2025 requires since July 2025: façades, insulation, installations, meters. Per category: checklist + workflow tips.
R-values explained: insulation per material and thickness
How do you read an R-value? Which materials give which R per thickness? Concrete tables for PUR, PIR, EPS, rockwool, cellulose and glass wool.
Calculate U-value for walls, roofs, floors and windows
The U-value determines how much heat flows through a building element. Example calculations per type + when to use default values.
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