Run a simple heat-load simulation
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.
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.
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