Energy Savings Calculator
Estimate how much you can save annually with a modern inverter AC compared to your current system. Our calculator provides a detailed comparison between old and new systems: annual costs, monthly breakdown, CO2 savings, payback period, and 10-year projection -- all calculated with your individual parameters.
Energy Savings Calculator
Calculate how much you can save with a modern inverter AC
Cost comparison
Annual savings
25,830 HUF
Payback timeline
Investment not recovered within 10 years
Environmental impact
92
Annual CO₂ savings (kg)
4.2
Equivalent to trees annual CO₂ absorption
How we calculate the savings
The energy savings calculator is based on the AC's energy efficiency metrics (SEER). The core calculation compares how much electricity the old and new systems consume for the same amount of cooling work over an entire season.
Understanding SEER
SEER (Seasonal Energy Efficiency Ratio) shows how much cooling energy (kWh) an AC produces from 1 kWh of electricity over an entire cooling season on average. For example, a unit with SEER 7.0 delivers 7 kWh of cooling from 1 kWh of electricity.
Annual consumption (kWh) = (Cooling capacity / SEER) × Daily hours × Cooling days
The advantage of inverter technology
Inverter technology brought a revolutionary improvement in energy efficiency. Conventional on/off ACs run the compressor at full speed then shut it off completely -- this constant start-stop cycle wastes significant energy. An inverter, on the other hand, continuously regulates the compressor speed, which means:
- No energy-intensive restarts
- Temperature is maintained smoothly without fluctuation
- Particularly efficient at partial load (which is most of the day)
- SEER rating is typically 1.5-2x higher than on/off ACs
Understanding COP and SCOP
COP (Coefficient of Performance) measures instantaneous efficiency: how many kWh of heating or cooling energy are produced from 1 kWh of electricity at a given moment. SCOP (Seasonal COP) provides the average efficiency over the heating season. Modern inverter ACs have SCOP values of 4.0-5.0, meaning they produce 4-5 kWh of heat energy from 1 kWh of electricity. This is drastically cheaper than gas heating or electric heating.
Energy class comparison
| Energy class | SEER range | Typical annual cooling cost (3.5 kW) | Typical units |
|---|---|---|---|
| D-E (old) | 2.5-3.5 | ~120,000-170,000 HUF | 10+ year old on/off AC |
| B-C | 4.0-5.5 | ~75,000-105,000 HUF | Basic inverter models |
| A-A+ | 5.5-7.0 | ~50,000-75,000 HUF | Mid-range inverter |
| A++-A+++ | 7.0-10.0+ | ~40,000-55,000 HUF | Premium inverter models |
* Estimated annual cooling cost with a 3.5 kW AC, 8 hours daily usage, at 70 HUF/kWh, with seasonal usage profile.
The environmental impact
Lower energy consumption is not only good for your wallet -- it also protects the environment. In Hungary, the average CO2 emission from electricity generation is approximately 0.25 kg/kWh. If a new inverter AC consumes 500 kWh less annually than the old one, that represents 125 kg of CO2 savings -- equivalent to approximately 5-6 trees' annual carbon dioxide absorption. Our calculator shows the specific environmental impact calculated with your parameters.
Tips for maximum energy savings
1. Choose a high SEER model
A higher SEER value pays for itself many times over in the long run. A SEER 8.0 model can consume up to 40% less than a SEER 5.0 unit.
2. Regular maintenance
Clean filters and a maintained system operate 15-20% more efficiently. Have your AC serviced at least once a year.
3. Optimal temperature setting
24-26 degrees is ideal. Each degree lower increases consumption by approximately 5%. Don't freeze the room!
4. Use a timer
Don't cool an empty home! WiFi-enabled ACs can be controlled remotely, so comfortable temperatures await your arrival.
More calculators and useful information
Frequently asked questions
About energy efficiency, SEER ratings, and inverter technology
What is a SEER rating and why does it matter?
What is the difference between an inverter and a conventional (on/off) AC?
How long does it take for a new inverter AC investment to pay back?
What is COP and how does it differ from SEER?
How can I further reduce my AC energy consumption?
How much can an AC heat pump save compared to gas heating?
Switch to smart cooling!
Request personalised energy consultation and a quotation from MAFER-COOL KFT specialists. We help you choose the most efficient solution for your home.