Software for HVAC design
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News
The Heat Loss app has been updated, adding a function has been added to insert rooms from an image file with a schedule.
13.06.2026
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A version of the HVAC Calculator has been created for mobile browsers on Android and iOS.
09.01.2026
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All online applications have been updated and now have a dark theme.
04.01.2026
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Store

License agreement Public contract
Starter
12months
€ / month
One-time payment: € for 12 months
ONE SUBSCRIPTION FOR ALL APPS
  • Heat Loss.
  • HVAC Calculator.
  • Psychrometric Chart.
  • Heat Pump.
  • Aerodynamics.
  • Kitchen Ventilation.
  • Pool Ventilation.
  • Ductwork Surface.
Optimal
24months
€ / month
One-time payment: € for 24 months
Save 20% or get 5 months free
ONE SUBSCRIPTION FOR ALL APPS
  • Heat Loss.
  • HVAC Calculator.
  • Psychrometric Chart.
  • Heat Pump.
  • Aerodynamics.
  • Kitchen Ventilation.
  • Pool Ventilation.
  • Ductwork Surface.
SITE APPS
Home Heat Loss
News HVAC Calculator
Site Map Psychrometric Chart
Contacts Heat Pump
Aerodynamics
Kitchen Ventilation
Pool Ventilation
Ductwork Surface
Unit Converter
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