Simple simulation (heat load)
The fastest of the three heat-load methods. It captures base building data and returns a simulation; use the deeper methods when you need a real sizing basis.
Simple simulation is the lightest entry on the Building and heat load card. Reonic offers three methods in increasing accuracy: simple simulation, heat-load indication via the building envelope, and the full room-by-room calculation. This page covers the first. The deeper methods have their own pages.
Residential only. Heat pumps are a residential product, so this flow applies to residential projects.
Run a simple simulation
- On the offer's Planning view, open Building and heat load and click Start planning.
- Choose Simple simulation from the three methods.
- Enter the base data: the heat-delivery type, the year of construction, the living area, and the number of occupants.
- If you already have a heat-load figure from an external calculation — for example from an energy consultant — enter it as the manual heat-load override.
- Save.
Reonic estimates the building's heat load from the base data you entered and returns a simulation. If you supplied a manual heat-load figure, that value is used instead of the estimate. This estimated heat load is what sizes the heat pump.
Pro tip: Use simple simulation for an indicative first conversation, or when an external heat-load figure already exists. For a committed offer, move to heat-load indication or the room-by-room calculation. Both produce a real sizing basis.
Things to know
- The three methods share the same Building and heat load entry point. You choose the depth at the start.
- The Building and heat load card is what sizes the heat pump. The Existing heating card is a separate input that drives the profitability comparison only.
For the envelope-based middle method (a real sizing basis without per-room detail), see Heat load indication. For the full DIN-EN-12831 method that produces the hydraulic-balancing report and subsidy-grade documentation, see Run a room-by-room heat-load calculation. For the status-quo baseline that drives the profitability comparison, see Capture the existing heating and consumption.
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.
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