Capture the existing heating and consumption

The Existing heating card records the customer's current heating type plus either their annual consumption (kWh) or their yearly cost (Euro). This is the status-quo baseline the profitability view compares the heat pump against. It doesn't size the heat pump. The heat pump is sized from the building's heat load on the Building and heat load card. Capture the existing heating once at the start of the planning, and the profitability page has a real baseline to compare the heat pump's running cost against.

Residential only. Heat pumps are a residential product, so this flow applies to residential projects.

Capture the heating

1. On the offer's Planning view, open Existing heating.
2. Click Start planning.
3. Select the heating type. For heat-pump planning this is usually Gas heating or Oil heating.

Enter consumption or costs

Enter the consumption directly in kWh, or use the built-in calculator to derive it:

1. Click the calculator icon.
2. Choose the heating type (oil or gas) and the calculation basis (costs or consumption).
3. Enter either the annual consumption in kWh or the yearly bill in Euro.
4. The calculator works out the missing value from the stored fuel price for that heating type. The gas and oil price defaults are set under Settings → Simulation → Electricity & gas prices.
5. Save the entry.

Pro tip: If the customer only has the bill amount to hand, use the calculator. The stored fuel price gets you to a usable kWh figure without making the customer dig through old invoices.

Things to know

• The captured consumption sets the customer's current running cost on the profitability comparison. If the profitability page reads oddly, check this figure first, since a wrong baseline skews the whole comparison.
• This is separate from the Reuse existing heating system? toggle on the Heating section, which records whether the customer keeps an existing boiler. That toggle also doesn't size the heat pump.
• To size the heat pump, fill the Building and heat load card. See Simple simulation and Run a room-by-room heat-load calculation.

Need help?

• Step-by-step questions about this flow → contact your Reonic account manager.
• Feature requests / something missing → drop a note to your account manager.
• Bug reports → include a screenshot and the URL where it happened in your support email.

Last updated on August 4, 2026