{
  "slug": "how-much-to-run-an-air-conditioner",
  "title": "How Much Does It Cost to Run an Air Conditioner?",
  "heading": "How Much Does It Cost to Run an Air Conditioner?",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/how-much-to-run-an-air-conditioner",
  "summary": "A 3,500-watt central AC run 8 hours a day at 16¢/kWh costs about $4.48 a day, or roughly $134 a month.",
  "description": "Air conditioner running cost follows the same watt-hour math as any appliance: wattage times hours run gives energy used, converted to kilowatt-hours and multiplied by your utility rate. This calculator supports both window units and central systems by wattage input.",
  "formula": "kWh per day = (Watts × Hours) ÷ 1000. Daily Cost = kWh × Rate per kWh. Monthly Cost = Daily Cost × 30.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=how-much-to-run-an-air-conditioner",
  "inputs": [
    {
      "id": "watts",
      "label": "AC unit wattage",
      "kind": "number",
      "hint": null,
      "default": 3500,
      "unit": "W",
      "min": 500,
      "max": 10000
    },
    {
      "id": "hoursPerDay",
      "label": "Hours run per day",
      "kind": "number",
      "hint": null,
      "default": 8,
      "unit": "hrs",
      "min": 0,
      "max": 24
    },
    {
      "id": "rate",
      "label": "Electricity rate",
      "kind": "number",
      "hint": null,
      "default": 0.16,
      "unit": "$/kWh",
      "min": 0.05,
      "max": 0.5
    }
  ],
  "outputs": [
    {
      "id": "dailyCost",
      "label": "Cost per day",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "monthlyCost",
      "label": "Cost per month",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "seasonalCost",
      "label": "Cost for a 120-day season",
      "format": "currency",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "AC unit wattage: 3500 W",
      "Hours run per day: 8 hrs",
      "Electricity rate: 0.16 $/kWh"
    ],
    "outputs": [
      "Cost per day: $4.48",
      "Cost per month: $134.40",
      "Cost for a 120-day season: $537.60"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter ac unit wattage (W).",
      "Enter hours run per day (hrs).",
      "Enter electricity rate ($/kWh).",
      "Read your cost per day on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "watts": 2100,
        "hoursPerDay": 4.8,
        "rate": 0.16
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "watts": 3500,
        "hoursPerDay": 8,
        "rate": 0.16
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "watts": 5600,
        "hoursPerDay": 12.8,
        "rate": 0.16
      }
    }
  ],
  "limitations": [
    "Results are estimates before tax, fees, and inflation unless an input explicitly covers them.",
    "Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.",
    "This is educational maths, not financial advice. Check anything contractual with the lender or your accountant."
  ],
  "faq": [
    {
      "q": "How much does it cost to run an air conditioner?",
      "a": "A 3,500-watt central AC unit run 8 hours a day at 16¢/kWh uses 28 kWh a day, costing about $4.48/day, or around $134 over a full month of summer use."
    },
    {
      "q": "How much does a window unit cost versus central air?",
      "a": "A typical window unit (900-1,500 watts) run the same hours costs roughly a quarter to a third as much as a central system, since it's only cooling one room instead of the whole house."
    },
    {
      "q": "Does thermostat setting change the cost much?",
      "a": "Yes — each degree you lower the thermostat below outdoor temperature typically adds 3-5% more runtime and energy use, so raising your set point from 68°F to 74°F can cut cooling costs noticeably."
    },
    {
      "q": "How can I estimate summer-long AC cost?",
      "a": "Multiply the daily cost by your typical cooling season length — about 120 days is a common estimate for a moderate climate, more for hot regions and less for mild ones."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/how-much-to-run-a-space-heater",
    "https://www.revenuelab.fyi/toolbox/how-much-will-my-electric-bill-be"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — How Much Does It Cost to Run an Air Conditioner? (https://www.revenuelab.fyi/toolbox/how-much-to-run-an-air-conditioner)"
}