Heat Pump ROI Calculator
Calculate how long it takes for a heat pump investment to pay for itself, and how much you can save compared to your current heating system.
Heat Pump ROI Calculator
Calculate how much you can save with a heat pump compared to your current heating
Annual cost comparison
Annual savings
+38,084 HUF
Installation cost
1,800,000
HUF
Net investment
1,800,000
HUF
Payback timeline
Does not pay back within 15 years
Environmental impact
2,977
Annual CO₂ savings (kg)
135.3
Equivalent to trees annual CO₂ absorption
Estimated heat demand
7.2 kW
SCOP efficiency
3.8
Annual heating cost (Current system)
270,000 HUF
Annual heating cost (Heat pump)
231,916 HUF
Heat Pump Type Comparison
| Factor | Air-to-Water | Ground-Source |
|---|---|---|
| Installation Cost | €5,000 - 12,000 | €8,000 - 18,000 |
| Average SCOP | 3.5 - 4.2 | 4.2 - 5.0 |
| Performance at -15°C | Reduced efficiency | Unchanged |
| Space Required | Minimal (outdoor unit) | Garden/land required |
| Lifespan | 15 - 20 years | 20 - 30 years |
| Typical ROI | 5 - 8 years | 7 - 12 years |
How Heat Pumps Work
A heat pump does not generate heat -- it transfers heat from the outdoor environment into your home. This principle makes it remarkably efficient.
Heat Absorption
The refrigerant absorbs heat from outdoor air (or ground) in the evaporator and changes from liquid to gas at low pressure.
Compression
The compressor pressurizes the gas, which significantly raises both its temperature and pressure.
Heat Release
The hot refrigerant releases heat to your heating system (radiators, underfloor heating, or fan coils) in the condenser.
Expansion
The expansion valve reduces pressure, the refrigerant cools down, and the cycle restarts. In summer, the process can be reversed for cooling.
Why so efficient? A heat pump uses 1 kWh of electricity to power the compressor, but transfers 3-5 kWh of heat energy from the environment into your home. This is expressed as the COP (Coefficient of Performance): COP 4.0 means 1 kWh of electricity produces 4 kWh of heat.
Available Grants & Incentives
Many European countries offer substantial grants and incentives for heat pump installations, significantly reducing the payback period.
Government Grants
- Up to 30-50% of installation cost covered
- Green home renovation programs in most EU countries
- Available for single-family homes and apartments
- Energy performance certificate usually required
Additional Incentives
- Low-interest green renovation loans
- Tax deductions for energy efficiency improvements
- Combinable with solar panel and insulation grants
- Increased property value after installation
Grant conditions vary by country and program. Contact our team for help navigating available options in your area.
Real ROI Examples
Three typical scenarios switching from gas boiler to air-to-water heat pump, calculated at current energy prices.
100 m² -- Average Insulation
- Heat pump type:Air-to-water 8 kW
- Installation cost:€7,500
- Grant received:-€3,200
- Net investment:€4,300
- Annual savings:€750/year
Estimated payback
~5.7 years
65 m² -- Good Insulation
- Heat pump type:Air-to-water 5 kW
- Installation cost:€5,600
- Grant received:-€2,700
- Net investment:€2,900
- Annual savings:€520/year
Estimated payback
~5.6 years
140 m² -- Excellent Insulation
- Heat pump type:Air-to-water 10 kW
- Installation cost:€9,500
- Grant received:-€4,000
- Net investment:€5,500
- Annual savings:€1,020/year
Estimated payback
~5.4 years
These figures are estimates for switching from gas boiler heating, calculated at current gas and electricity prices. Actual payback depends on insulation condition, energy price trends, and available grants.
What to Consider Before Installation
A heat pump is a significant investment. Consider these practical factors before making your decision.
Insulation Quality
Heat pump efficiency drops in poorly insulated buildings. Consider upgrading windows and facade insulation first, then sizing the system accordingly.
Electrical Capacity
An 8-10 kW heat pump draws 2-3 kW of electricity. Verify that your existing electrical connection and main fuse can handle the additional load.
Noise Level & Placement
The outdoor unit produces 40-55 dB of noise. In apartments, check with neighbors and building management. Place the unit at least 3 meters from neighboring windows.
Existing Heating System
Heat pumps work at lower flow temperatures (35-45 °C). They pair ideally with underfloor heating. Traditional radiators may need upsizing or replacing.
Proper Sizing
An over- or under-sized heat pump wastes energy and wears out faster. Proper sizing requires an on-site heat loss calculation, not just a floor area estimate.
Grant Timing
Grant programs have varying deadlines and conditions. Plan your investment timeline around available grant windows to maximize financial support.
Frequently Asked Questions
How long does it take for a heat pump to pay for itself? ▼
ROI depends on your current heating system, property size, and insulation quality. Switching from gas: 6-10 years, from oil: 4-7 years, from electric heating: 3-5 years. Government grants can reduce payback to 2-4 years.
What is the difference between air-source and ground-source heat pumps? ▼
Air-source (air-to-water) heat pumps extract heat from outdoor air — cheaper to install (€5,000-12,000) but less efficient in extreme cold (SCOP ~3.8). Ground-source systems extract heat from the ground — more expensive (€8,000-18,000) but maintain consistent efficiency year-round (SCOP ~4.5).
How much CO₂ can I save by switching to a heat pump? ▼
Switching from gas heating to a heat pump can reduce CO₂ emissions by 40-60%. A typical 120 m² home can save 2-3 tonnes of CO₂ per year, equivalent to planting 100-140 trees. With green electricity, emissions can drop to near zero.
What size heat pump do I need for my home? ▼
A typical European home (100-150 m²) needs 6-9 kW of heating capacity. Well-insulated new builds need less (4-6 kW), while older poorly insulated homes need more (8-12 kW). Proper sizing requires an on-site assessment considering insulation, windows, and hot water demand.
Interested in heat pump installation?
Request a free on-site assessment and personalized quote! We also help with grant applications.
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