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AC Calculators

Free online tools to help you choose the perfect air conditioning and calculate your energy savings. Use our professional calculators to make informed decisions -- whether you are purchasing a new AC or assessing the efficiency of your current system.

100% free No registration Instant results
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AC Capacity Calculator

Calculate the right AC capacity for your room. The calculator takes into account floor area, storey, insulation quality, window orientation, ceiling height, and number of occupants. Includes a detailed result breakdown, model recommendations, and estimated monthly operating costs.

Area-based calculationFloor, insulation, orientationModel recommendationsMonthly cost estimate
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Energy Savings Calculator

Estimate how much you can save with a modern inverter AC compared to your current system. SEER comparison, annual savings, CO2 reduction, payback period, and 10-year projection -- all calculated with your individual parameters.

SEER comparisonCO2 savingsPayback period10-year projection
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OldNew

Annual Operating Cost Calculator

Compare your old AC system annual cooling and heating costs against a modern, energy-efficient unit. Energy class selector, detailed monthly breakdown, and 10-year savings projection with your individual settings.

Cooling + heating costsEnergy class selectorMonthly breakdown10-year projection
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ROI

Heat Pump ROI Calculator

Calculate how long it takes for a heat pump investment to pay for itself compared to your current heating system. Air-source and ground-source types, government grants, CO₂ savings, and 15-year cost comparison.

Gas vs heat pumpGrant calculatorCO₂ savings15-year projection
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Why use our calculators?

We help you make the best decision

Expert thoroughness

Our calculators are based on calculation methods accepted by the HVAC industry. We consider more factors than most online calculators to give you the most accurate estimate possible.

Detailed results

You don't just get a number: we provide a detailed breakdown, visual representation, model recommendations, and monthly cost estimates so you can see the full picture.

Quick and simple

Usable in 30 seconds, without registration, from any device. The slider controls are intuitive and easy to use on both desktop and mobile.

Frequently asked questions

About using the calculators

Are the calculators free to use?
Yes, all our calculators are completely free and can be used without registration. Our goal is to help you make informed decisions when choosing an AC and assessing energy savings opportunities.
How accurate are the calculator results?
The calculators provide indicative estimates that determine values with approximately 10-15% accuracy in most cases. For precise sizing and personalised advice, request a free on-site survey from MAFER-COOL KFT by calling 06 30 972 1237.
What data do I need to use the calculators?
For the capacity calculator, you need the room floor area, storey, insulation quality, and window orientation. For the energy calculator, you need the daily usage hours, AC capacity, electricity price, and installation cost. Everything can be set in seconds using the sliders.
Can I use the calculators on my phone?
Yes, all our calculators are fully responsive and work perfectly on phones, tablets, and desktop computers. The slider controls are comfortable to use on touchscreens as well.
How can I request a quote based on the calculator result?
Next to the calculator results, you will find a "Get a quote" button that takes you directly to our contact page with the result included. Our specialists will prepare a personalised quotation based on the provided parameters. You can also call us directly at 06 30 972 1237.

Want personalised advice?

The calculators provide indicative results. MAFER-COOL KFT offers free on-site surveys and personalised quotations. Call us today!

Contact us 06 30 972 1237