♨️
Heat Pump Sizing Calculator
FreeCalculate heat pump power needed based on area, insulation and climate zone. Economic comparison and CO₂ savings.
Compliant with NF EN 378 / NF EN 14511 / RE2020
📊Sizing & profitability
♨️Recommended HP power
10kW
SCOP average
3,2
💰Annual savings
+717€/an
🌱CO₂ avoided/year
3.1t CO₂
Sizing
Heat loss : 6.3 kW
DHW need : +1 kW
Gross power : 7.3 kW
With margin : 8.4 kW
Ratio : 56 W/m\u00b2
Annual comparison
Old system : 1,664 \u20ac/an
HP : 947 \u20ac/an
Savings : 43%
Investment
Estimate : 4,500 \u20ac HT
Payback : 6.3 years
Needs : 13,310 kWh/an
💡
Favorable ROI (6.3 years). Don't forget subsidies: MaPrimeRénov', CEE, éco-PTZ.
📐 Calculation method
Déperditions = 150 m² × G × ΔT / 30
ΔT = 20°C - (-8°C) = 28°C
P_PAC = (Déperditions + ECS) × marge sécurité
Conso élec = Besoins thermiques / COPG = heat loss coefficient by insulation level. Safety margin 15% (air-water) or 10% (geothermal). COP varies by technology.
Standards & regulations
- NF EN 378Systèmes de réfrigération et pompes à chaleur — Sécurité et environnement
- NF EN 14511Climatiseurs, PAC et déshumidificateurs — Conditions d'essai et performances
- RE2020Réglementation environnementale bâtiments neufs
- F-Gas UE 517/2014Réglementation fluides frigorigènes
- NF C 15-100Installations électriques basse tension
This tool provides indicative estimates. Results do not substitute professional advice. Always verify with current regulations.
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