Heat Loss Calculator
The Heat Loss Calculator uses declared design information to calculate the design heat loss for the room or building. Enter the real project inputs, review the result and download an Adelphos-branded PDF report.
Enter the known design inputs to calculate the design heat loss for the room or building.
Use the Heat Loss Calculator immediately without signing in, review the protected Adelphos result, then download the branded PDF report.
Build this calculation in Chat and Adelphos will guide you through the required information, run the same protected engine and help you review the output.
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Free calculation. No sign-in. No selector journey.
This public calculator does not recommend a manufacturer, catalogue item or equipment model. It sends declared inputs to the protected Adelphos calculation service and never falls back to browser arithmetic.
No account or Adelphos project is required. No HTML report is offered. The downloadable report is the Adelphos-branded PDF returned by the protected report service.
How does the Heat Loss Calculator work?
Enter the internal and external design temperatures, fabric areas and U-values, thermal bridges where applicable, and the ventilation or infiltration rate supported by the project information.
What the Heat Loss Calculator calculates
The Heat Loss Calculator uses declared design information to calculate the design heat loss for the room or building. Enter the real project inputs, review the result and download an Adelphos-branded PDF report.
Design information you need
Enter the internal and external design temperatures, fabric areas and U-values, thermal bridges where applicable, and the ventilation or infiltration rate supported by the project information.
Calculation result and PDF report
The result separates fabric and air-change heat losses and returns the total design duty for review before it is used in emitter or heat-source sizing. A successful calculation can also produce an Adelphos-branded PDF report.
Checks, limits and responsibility
This calculation is an aid, not a design approval. The user must verify every input, applicable standard, result and its suitability for the project.
How to use the Heat Loss Calculator.
The calculation follows four clear stages: gather verified information, enter the design inputs, calculate, then review the returned checks and report.
1. Gather the source information
Enter the internal and external design temperatures, fabric areas and U-values, thermal bridges where applicable, and the ventilation or infiltration rate supported by the project information.
2. Enter the design inputs
Use consistent units and declare every required assumption. This calculator does not silently replace missing required values with convenient engineering defaults.
3. Run the protected calculation
Submit the form to the Adelphos calculation service. The calculation performs no fallback arithmetic in the browser and returns only the public result needed for review.
4. Check the result before use
The result separates fabric and air-change heat losses and returns the total design duty for review before it is used in emitter or heat-source sizing. Check the result against the coordinated design, current project requirements and competent-person review.
Heat Loss Calculator searches covered by this page
This page answers the practical search intent behind the Heat Loss Calculator: which inputs are needed, what the calculation returns and what must still be checked by the user.
The user is responsible for verifying all inputs, assumptions, standards, selections, outputs and suitability, and for obtaining competent-person review. Adelphos accepts no responsibility for decisions made using this calculation.
Heat Loss Calculator questions and answers.
What is Heat Loss Calculator?
The Heat Loss Calculator uses declared design information to calculate the design heat loss for the room or building. Enter the real project inputs, review the result and download an Adelphos-branded PDF report.
How do I use Heat Loss Calculator?
Enter the known inputs and run the calculation directly on this page. No account, sign-in or Adelphos project is required; review the result and download the branded PDF report where available.
Can an AI agent use this through MCP?
Where the workflow exposes a named MCP tool, an authorised agent can submit the structured inputs and receive the same traceable result. Consequential outputs remain subject to user review.
Continue the Heat Loss Calculator in Adelphos Chat.
Build it in Chat when you want guidance through the inputs, the same protected calculation engine and help reviewing the output before relying on it.
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