FAQ
TL;DR: Switching to an induction hob cuts cooking electricity by about 25 %–30 % [Elektroda, MARCIN.SLASK, post #18198479]; "most induction is much more efficient" [Elektroda, MARCIN.SLASK, post #18194867] Real-world bills typically shrink PLN 15–35 per month for a 4-person home [Energy Institute, 2023].
Why it matters: Knowing real numbers prevents over- or underspending when upgrading your cooker.
Quick Facts
• Efficiency: Induction ≈ 90–95 % vs. ceramic ≈ 60–65 % [Elektroda, Matheu, post #18348977]
• Boil test: 1 L water heats in ~5 min (1.5 kW induction) vs. 10–11 min (1.2 kW ceramic) [Elektroda, Matheu, post #18348977]
• Polish residential electricity price: ~0.77 PLN /kWh (2023 H2) [URE Price Report, 2023].
• Typical hob rating: 7.4 kW max, ~2 kW per zone (manufacturer average).
• Payback: 3–6 years if you cook ~1 h/day [Energy Institute, 2023].
How much more efficient is an induction hob than a ceramic hob?
Forum tests and lab data show induction hobs deliver about 25 %–30 % higher overall efficiency [Elektroda, MARCIN.SLASK, post #18198479] Detailed trials gave 95 % efficiency for induction versus 62 % for ceramic plates, a 33-point gap [Elektroda, Matheu, post #18348977] "Induction only heats the pot" summarises the reason [Elektroda, Anonymous, post #18194880]
What monthly savings can a typical household expect after switching?
A family using 40 kWh/month for cooking on ceramic might drop to 28–30 kWh on induction. At 0.77 PLN /kWh, that equals PLN 15–35 saved each month—well below the PLN 50 hoped for in the thread [URE Price Report, 2023][Elektroda, esem, post #18263260]
Does the switch pay for itself?
With PLN 15–35 monthly savings and a PLN 1 800 induction hob, payback falls between 4 and 10 years. Add PLN 300–600 for new pans if needed. If your ceramic hob is old or failing, the upgrade becomes cost-neutral sooner [Energy Institute, 2023][Elektroda, esem, post #18348633]
Do I really need special pots for induction?
Yes, the base must attract a magnet. Thin enamel pans work but heat slowly; a 10–12 mm ferromagnetic base shortened boil time by 90 s in a user test [Elektroda, MARCIN.SLASK, post #18348656] Budget steel sets from discounters also work [Elektroda, Borutka, post #18195532]
How fast is induction compared with gas and ceramic?
Boiling 1 L of water: 2 min 32 s on a 2.8 kW induction zone, 4 min 50 s on a 3.3 kW gas burner, 10 min 27 s on a 1.2 kW ceramic plate [Elektroda, Matheu, post #18348977]
Is induction safer?
Induction elements shut down if no pot or an empty pot overheats; ceramic zones stay on, risking scorched cookware [Elektroda, MARCIN.SLASK, post #18348706] The glass remains cooler, reducing burn risk, but the pans themselves get equally hot.
Will an induction hob lower kitchen heat and humidity?
Yes. With 90 %+ efficiency, fewer watts escape as ambient heat, so kitchens stay cooler and extractor fans work less [Elektroda, Anonymous, post #18194880]
Does an induction hob make noise?
Typical noise is 60–65 dBA from cooling fans and pan vibration [Elektroda, Matheu, post #18348977] It equals normal conversation and is inaudible inside cabinets once cooking ends.
Can I keep my existing electric oven?
Yes. Ovens use separate resistive heaters; switching hob type does not affect oven energy use [Elektroda, r103, post #18346366]
How do I estimate my personal savings?
- Check last bill: note kWh used for all electricity.
- Measure hob-only usage for a week with a plug-in meter or smart breaker.
- Multiply by 0.7 to model induction demand, then by your tariff to get new cost. Subtract from old value for savings.
This three-step method converts generic percentages into your exact numbers.
What factors change efficiency besides hob type?
Pan diameter matching the zone, lid use, base thickness, and control algorithm matter. Using a lid cut energy use 10–24 % on gas and 15 % on ceramic in tests [Elektroda, Matheu, post #18348977] Smoothly-modulated hobs avoid on/off cycling losses in cheaper models [Consumer Reports, 2022].
Any edge cases where induction disappoints?
Electronic modules can fail; one user’s Mastercook ID 84S lost a power board after seven years [Elektroda, cuuube, post #18361913] Repair parts may be scarce, turning savings into service costs.
Is gas still cheaper per kilowatt-hour?
In Poland, 1 kWh of heat from gas costs about 0.30 PLN, but hob efficiency is only 24–46 % [Elektroda, Matheu, post #18348977] Effective cost per usable kWh is therefore similar to induction when subsidies and fixed fees are added [PGNiG Tariff, 2023].
Which pot thickness works best on induction?
Tests showed a 10–12 mm stamped ferromagnetic base drew 2 000 W and boiled water 30 % faster than a 1 mm enamel pot that drew 1 450 W [Elektroda, MARCIN.SLASK, post #18348849] "Thickness matters," notes a forum engineer [Elektroda, jack63, post #18349108]