Thermal requirement calculation
ALTAL Heat Loss Calculator v4.1
Professional thermal calculation with historical climate data (2016-2026)
📍 Location, climate and interior comfort
🏗️ Type and purpose of the building
📐 Construction data of the building
📊 Thermal calculation results
This calculation represents theoretical thermal demand for continuous operation 24/7 at the external design temperature.
For actual equipment sizing, apply a correction factor according to the recommendations below.
📋 Summary of the conditions entered
| 🌍 Country / City | - |
| 📅 Climate data | - |
| 🏗️ Building type | - |
| 📐 Area / Volume | - |
| 🧱 Walls | - |
| 🪟 Windows | - |
| 🏠 Roof | - |
| 🌡️ Outside temperatures | - |
| 🌡️ Indoor temperatures | - |
| 👥 Occupants | - |
📊 Enter your gas consumption (m³) per month
💰 Prices for economic calculation
⚙️ Parametrii suplimentari ai sistemului
💡 Recommendations for the heating system
- Estimated results. For a detailed design, consult a specialist engineer.
🔧 This result can be used in the ALTAL Configurator to select the heat pump and system components.
Calculating the heat demand is the first step in correctly sizing a heating system.
A correct calculation allows the choice of a heat pump with the right power, avoiding both oversizing and insufficient operation of the equipment.
ALTAL offers smart tools for estimating home heat needs and configuring efficient HVAC systems.
Thermal requirement calculation for choosing a heat pump
What is the thermal requirement of a building?
The thermal demand represents the amount of energy required to maintain the desired temperature in a building under specific outdoor temperature conditions.
Thermal requirement calculation takes into account heat losses through walls, windows, roof, floor and ventilation.
Why is calculating the heat demand important?
🔥 Choosing the right heat pump
A heat pump that is too small cannot provide the necessary comfort, and one that is too large can increase costs and reduce efficiency.
⚡ Consum energetic optim
Correct sizing contributes to a COP and SCOPE better and reduce electricity consumption.
🏠 Constant comfort
The system operates stably and maintains the desired temperature in the home.
What data is needed for the calculation?
✓ Area of the home
✓ Room volume
✓ Climatic zone
✓ Wall insulation
✓ Type of windows
✓ Desired indoor temperature
✓ Heating system used
✓ Heating medium temperature
How does ALTAL AI calculate the heat requirement?
ALTAL AI will be able to automatically analyze the building characteristics and recommend the optimal heat pump power, thermal calculation, system configuration and necessary components.
Calculating the heat demand is the first step in correctly sizing a heating system.
A correct calculation allows the choice of a heat pump with the right power, avoiding both oversizing and insufficient operation of the equipment.
ALTAL offers smart tools for estimating home heat needs and configuring efficient HVAC systems.
Calculating the heat demand is the first step in correctly sizing a heating system.
A correct calculation allows the choice of a heat pump with the right power, avoiding both oversizing and insufficient operation of the equipment.
ALTAL offers smart tools for estimating home heat needs and configuring efficient HVAC systems.