Heating requirement calculator - calculate the energy requirement for your home

Discover how our innovative carbon heating system reduces your heating costs - with our heating requirement calculator you can see not only your heating requirement, but also the costs for the complete heating system.

Maximum efficiency

Simple operation

Cost savings

to the calculator
Heating requirement calculator - for calculating energy requirements and costs

How does the heating requirement calculator work?

Determine the costs and energy consumption of your carbon heating system with just a few clicks.

Our heating requirement calculator is quick and easy to use.
Enter the room size and the current insulation - and the calculator will show you the estimated purchase costs and energy consumption of your new carbon heating system.
Test directly how much you can save!

/* CSS für das Layout des Rechners */ .heizrechner-container { font-family: Arial, sans-serif; padding: 20px; max-width: 600px; margin: 0 auto; border: 1px solid #ccc; border-radius: 8px; background-color: #f9f9f9; } .heizrechner-section { margin-bottom: 20px; } .heizrechner-input-group { margin-bottom: 15px; } .heizrechner-input-group label { display: block; margin-bottom: 5px; font-weight: bold; } .heizrechner-input-group input[type="text"], .heizrechner-input-group input[type="number"], .heizrechner-input-group select { width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; } .add-room-button, .calculate-button, .detail-button { display: inline-block; padding: 10px 20px; color: #fff; background-color: #2196F3; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; margin-top: 10px; text-decoration: none; text-align: center; } .add-room-button { background-color: #4CAF50; } .calculate-button:hover, .add-room-button:hover, .detail-button:hover { opacity: 0.85; } .results { margin-top: 20px; padding: 15px; border: 1px solid #ddd; border-radius: 4px; background-color: #e0f7fa; } .results h3 { margin-top: 0; } .detail-link { margin-top: 15px; padding-top: 10px; border-top: 1px solid #ccc; }

Heating requirement calculator

Very good (35 - 40 watts/m²) Good (45 - 50 watts/m²) Moderate (60 - 70 watts/m²) Poor (75 - 120 watts/m²)

Your results:

Total area: m²

Estimated total heating requirement: kW

Estimated annual heating costs: approx. €

Estimated material costs (flat rate): approx. €

For an exact calculation of film meters, adhesive, panels, thermostats, control box, net/gross, and installation costs, please use our new heating cost calculator.

Start detailed calculation
Note: The calculations are estimates and serve as a guide. They do not replace professional energy consultation.
function addRoom() { const roomsContainer = document.getElementById('rooms-container'); const newRoomGroup = document.createElement('div'); newRoomGroup.classList.add('heizrechner-input-group'); newRoomGroup.innerHTML = ` `; roomsContainer.appendChild(newRoomGroup); } function calculateHeizbedarf() { const daemmungSelect = document.getElementById('daemmung-select'); const wattPerSqm = parseFloat(daemmungSelect.value); const roomSizes = document.querySelectorAll('.room-size'); let totalWatt = 0; let totalSqm = 0; roomSizes.forEach(input => { const size = parseFloat(input.value); if (!isNaN(size) && size > 0) { totalWatt += size * wattPerSqm; totalSqm += size; } }); const totalKw = totalWatt / 1000; // Annahmen für die Kostenberechnung (kannst du anpassen) const strompreisProKwh = 0.35; // €/kWh const materialKostenProQmWert = 80; // € pro m² (pauschale Materialschätzung) // Annahmen für die Heizperioden const heizperiode1Tage = 120; const heizperiode1StundenTag = 5; const heizperiode2Tage = 60; const heizperiode2StundenTag = 2.5; // Berechnung der Verbrauchskosten const kostenPeriode1 = totalKw * heizperiode1Tage * heizperiode1StundenTag * strompreisProKwh; const kostenPeriode2 = totalKw * heizperiode2Tage * heizperiode2StundenTag * strompreisProKwh; const totalEuro = kostenPeriode1 + kostenPeriode2; // Berechnung der Anschaffungskosten (pauschale Materialschätzung) const totalMaterialCost = totalSqm * materialKostenProQmWert; // Bewertungstext const evaluationElement = document.getElementById('evaluation'); let evaluationText = ''; if (wattPerSqm <= 40) { evaluationText = 'Ihr Haus hat einen guten bis sehr guten Dämmstandard, was zu niedrigen Heizkosten führen wird.'; } else if (wattPerSqm <= 50) { evaluationText = 'Der Dämmstandard ist durchschnittlich. Möglicherweise gibt es Sparpotenzial bei der Dämmung.'; } else { evaluationText = 'Ihr Haus hat einen hohen Heizbedarf. Eine Verbesserung der Dämmung wird dringend empfohlen, um Heizkosten zu senken.'; } // Ergebnisse anzeigen document.getElementById('total-qm').textContent = isNaN(totalSqm) ? '0' : totalSqm.toFixed(0); document.getElementById('total-watt').textContent = isNaN(totalKw) ? '0.00' : totalKw.toFixed(2); document.getElementById('total-euro').textContent = isNaN(totalEuro) ? '0.00' : totalEuro.toFixed(2); document.getElementById('material-cost').textContent = isNaN(totalMaterialCost) ? '0.00' : totalMaterialCost.toFixed(2); evaluationElement.textContent = evaluationText; document.getElementById('results').style.display = 'block'; }

Calculate exact heating needs now

Would you like to calculate not only the heating requirements, but also the exact quantities of materials, costs for foil meters, adhesives, thermostats, and the appropriate control box? Then use our comprehensive
Heating calculator.
There you will receive a complete, automatically generated offer including a PDF download.

Experiences of our customers

"Thanks to the carbon heater from Rebotherm, our home is finally warm and cozy. The installation was easy and the service was first class!" - Family M. from Hamburg

"We have installed the heating foil in our living room and are delighted with the even heat distribution. Highly recommended!" - Mr. S. from Wolfsburg

"Choosing a carbon heating system was the best investment for our home. Energy efficient and environmentally friendly!" - Mrs. B. from Dortmund

Frequently asked questions

Here you will find answers to the most frequently asked questions about our carbon heating systems and their installation.

How does a carbon heater work?

Our carbon heaters use infrared radiation to heat rooms efficiently and evenly without drying out the air.

Is the installation complicated?

No, installation is straightforward and can usually be completed in just a few hours. We also offer an installation service.

Are carbon heating systems energy efficient?

Yes, carbon heaters are very energy efficient because they heat objects and people directly, which reduces energy consumption.

What maintenance is required?

Our heating systems are maintenance-free.

Can I control the heating myself?

Yes, our systems are equipped with modern thermostats that enable simple control, including via app.

Are carbon heating systems safe?

Yes, our heaters are safe and comply with all relevant safety standards.

What are the advantages of carbon heating?

It provides even heat distribution, is invisible and reduces energy consumption.

Can the heating be installed in every room?

Yes, our heaters are flexible and can be installed in any room.

How long does a carbon heater last?

Our heaters are durable and have a service life of up to 50 years.

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