Energy calculator
Informative energy savings estimate for a single-family house. Enter your house details, select investments, and see the estimated savings. Calculations are based on a simplified EN ISO 13790 model and are for guidance only - consult an energy advisor for a precise assessment.
m²
Walls: — m²
Windows: — m²
Roof: — m²
Select investments
Heat pump
—
Window replacement
—
Facade insulation
—
Roof insulation
—
Ventilation (MVHR)
—
Solar panels
—
CURRENT STATE
F
energy class
A1
A2
B1
B2
C
D
E
F
G
—
QNH kWh/m²a
—
Delivered kWh/m²a
—
Primary kWh/m²a
—
CO₂ kg/m²a
Annual heating cost
—
AFTER RENOVATION
F
energy class
A1
A2
B1
B2
C
D
E
F
G
—
QNH kWh/m²a
—
Delivered kWh/m²a
—
Primary kWh/m²a
—
CO₂ kg/m²a
Annual heating cost
—
Investment cost
Total
0 €
Annual savings
Current costs
—
After renovation
—
Annual savings
—
Environmental impact
—
kg CO₂ / year less
Payback period
- years