Heat pump
Sizing by area + payback vs gas/electric
Input
HP capacity
heat/yr: 22 810 кВт·год
9,6 кВт
- HP/yr
- 30 793 ₴
- El. boiler/yr
- 98 537 ₴
- Gas/yr
- 19 208 ₴
- Payback vs el.
- 5,2 yrs
Loss norms: new house 50–70 W/m², old 100–120, uninsulated 150+. Air-to-water COP 2.5–4. Heat at elPrice/COP vs gas ~9.5 kWh/m³. Payback vs electric boiler 4–8 years.