AC Comparison Tool

That guide fixes the comparison to the same tonnage at 3-star vs 5-star. This tool lets both tonnage AND star rating vary independently on each side — useful for a genuinely different question, like "is a smaller 1-ton 5-star AC cheaper to run than a bigger 1.5-ton 3-star one?"

Only if both would actually be adequate for your room — check our AC tonnage calculator first so you're comparing two AC sizes that would both realistically cool your space, not picking an undersized option just because it looks cheaper to run.

Yes — pick your DISCOM and both options are priced at your state's real top-slab tariff.

Each side shows monthly and annual cost for that exact configuration at your chosen DISCOM. The difference figure below the cards is Option A minus Option B — a positive number means Option A costs more, not less.

Not directly in this tool — it compares two configurations at one shared DISCOM. To see the same AC priced across multiple states, see the slab comparison on our AC running cost calculator.

Then the cost will be identical on both sides — this tool is only useful when at least one variable (tonnage, star rating or hours) differs between Option A and Option B.

Yes — you can set different daily hours for each option too. This is useful for comparing, say, a bedroom AC used 10 hours a night against a living-room AC used 4 hours in the evening.

Not automatically — it depends on both the tonnage gap and the star-rating gap together. See "Does a much bigger, average-star AC ever lose to a small, top-star one?" above for a real computed example.