Calculators

Heat Pump Calculator

The Heat Pump Calculator uses declared design information to calculate heat pump size and design duty. Enter the real project inputs, review the result and download an Adelphos-branded PDF report.

Free engineering calculator

Enter the known design inputs to calculate heat pump size and design duty.

Use the Heat Pump Calculator immediately without signing in, review the protected Adelphos result, then download the branded PDF report.

Want help with the inputs?

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.

Method, inputs and limits

How does the Heat Pump Calculator work?

Start with a verified design heat loss at the project design condition, then add any simultaneous hot-water duty and an explicit design margin. Running-cost comparisons also need annual heat demand, a realistic efficiency input and a dated electricity tariff.

What the Heat Pump Calculator calculates

The Heat Pump Calculator uses declared design information to calculate heat pump size and design duty. Enter the real project inputs, review the result and download an Adelphos-branded PDF report.

Design information you need

Start with a verified design heat loss at the project design condition, then add any simultaneous hot-water duty and an explicit design margin. Running-cost comparisons also need annual heat demand, a realistic efficiency input and a dated electricity tariff.

Calculation result and PDF report

The result gives the heat-pump duty required by the declared heat loss and allowances. It does not choose equipment; running cost remains dependent on demand, efficiency, controls and tariff. 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 calculate it

How to use the Heat Pump Calculator.

The calculation follows four clear stages: gather verified information, enter the design inputs, calculate, then review the returned checks and report.

  1. 1. Gather the source information

    Start with a verified design heat loss at the project design condition, then add any simultaneous hot-water duty and an explicit design margin. Running-cost comparisons also need annual heat demand, a realistic efficiency input and a dated electricity tariff.

  2. 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. 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. 4. Check the result before use

    The result gives the heat-pump duty required by the declared heat loss and allowances. It does not choose equipment; running cost remains dependent on demand, efficiency, controls and tariff. Check the result against the coordinated design, current project requirements and competent-person review.

Heat Pump Calculator searches covered by this page

Toolbox research groups this page with related searches for heat pump running cost calculator uk, heat pump cost calculator and heat pump sizing calculator. The sections above explain the common design basis, while the calculator uses the actual declared inputs rather than a chart-only or product-led answer.

Engineering responsibility

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.

Direct answers

Heat Pump Calculator questions and answers.

What size heat pump do i need?

Use a design heat-loss calculation at the project design condition, add any simultaneous hot-water allowance and an explicit margin, then calculate the required duty. The Adelphos tool reports that duty only and does not select equipment.

How much does a heat pump cost to run?

Estimated running cost is heat demand divided by the applicable efficiency input, multiplied by the electricity tariff, with hot-water demand treated separately where required. Use date-stamped tariffs and realistic SCOP or condition-specific performance assumptions.

What is Heat Pump Calculator?

The Heat Pump Calculator uses declared design information to calculate heat pump size and design duty. Enter the real project inputs, review the result and download an Adelphos-branded PDF report.

How do I use Heat Pump 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 Pump 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.

Workflow boundaryPDF reports only · calculation-only public tools