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Prime BreezeHeating and Air Conditioning · Dallas, Texas
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Calculator and blank notebook on a timber desk beside a window overlooking an outdoor AC unit.

AC Running Cost Calculator

Enter your AC’s power, running time and electricity rate to estimate its electricity running cost.

Calculate your AC cost
Your air conditioner’s electricity use

Electrical input, not cooling capacity.

Where to find this

Find electrical input power or power consumption in your model’s manufacturer documentation or an accessible label. Do not open equipment. Cooling capacity, tonnage, breaker ratings and amps × volts are not running watts.

Actual or equivalent running time.

About runtime

Enter actual or equivalent running hours at the power you entered, not the thermostat schedule. With variable-speed equipment, match measured average power to the time it represents. Do not discount off cycles twice.

Use your plan’s usage price.

Where to find this

Check your electricity bill or Electricity Facts Label for applicable energy and per-kWh delivery prices. An advertised average may include fixed fees or conditional credits. If you do not know the price, check your plan rather than guessing.

Repeat this daily running pattern.

About operating days

Choose 1–31 days that follow this daily running pattern. The daily cost is per operating day.

How this is calculated

Energy (kWh) = electrical input in kW × operating hours per day × operating days. Cost = energy × electricity rate in dollars per kWh. Watts are divided by 1,000 to get kW; cents are divided by 100 to get dollars. Calculations keep full precision; displayed amounts are rounded.

Use electrical input, not cooling capacity in BTU/h or tons. Running hours must match the power figure: a thermostat schedule is not equipment runtime. Cycling and variable speed change consumption; if average power already includes off cycles, do not reduce the hours again for those cycles. Rated input describes a scenario, not a measurement.

Only the consumption represented by your inputs is included. An outdoor-unit figure may exclude the indoor blower, other fans and standby use. Fixed fees, taxes, changing time-of-use rates, tiers and conditional credits are not modelled. This is not a whole-bill forecast, equipment-sizing recommendation, installation quote or savings promise.

Sources: EIA electricity measurement (opens in a new tab) and ENERGY STAR air conditioners (opens in a new tab). For equipment concerns, explore air conditioning repair and care.

Prime Breeze is a fictional HVAC website demonstration by Plan and Pulse (opens in a new tab). This calculator provides estimates from your inputs; no HVAC services, estimates or installation quotes are provided.

Frequently Asked Questions

Where can I find my AC’s electrical input?

Check your model’s documentation or an accessible label for electrical input power in watts (W) or kilowatts (kW). Cooling capacity, tonnage, breaker ratings and amps × volts are not running watts. Do not open equipment or measure wiring.

Is thermostat-on time the same as running time?

No. A thermostat schedule says when cooling is allowed. Use actual or equivalent running hours at the entered power. Variable-speed equipment needs an average power figure matched to the same period.

Will this match my electricity bill?

No. This estimates only the equipment consumption and usage price you enter. Other appliances, fixed fees, tax and plan conditions can change your bill. See “How this is calculated” for exclusions.

How do power and electricity-rate units affect the result?

1,000 W equals 1 kW, and 100 cents equals $1. Choose the unit that matches each input. For example, 2,000 W at 15¢/kWh gives the same cost as 2 kW at $0.15/kWh when runtime and days are unchanged.