⚡ How Much Does Your AC Cost to Run per Month?
Calculate how much electricity your AC uses per day, month, and 3-month season — and how much that costs on your local tariff. Compare Inverter vs Non-Inverter, in USD, INR, AED, SAR, EUR, GBP or AUD.
📏1. AC Sizing & Technology
⏱️2. Usage & Cooling Load
💡3. Electricity Tariff & Currency
What Does Air Conditioning Cost in Texas?
Texas runs its air conditioners harder and longer than any other state — in Houston, Dallas, San Antonio, and Austin, cooling season stretches from April into October. The saving grace is price: thanks to the state’s deregulated retail electricity market, the average Texas residential rate in 2026 is around $0.16 per kWh, less than half of what Californians pay. The calculator above is pre-set to that Texas average; enter the exact rate from your own Electricity Facts Label (EFL) for a precise monthly figure.
In most of Texas you buy power from a Retail Electric Provider (REP) such as TXU Energy, Reliant, Gexa, or Green Mountain, while the wires are owned by delivery utilities like Oncor (Dallas–Fort Worth) and CenterPoint Energy (Greater Houston). Your all-in price = REP energy charge + delivery charges, so always compare plans on the total ¢/kWh at your usage level.
Typical Texas Electricity Prices by Market (2026)
| Area | Delivery Utility | Typical All-In Rate |
|---|---|---|
| Dallas–Fort Worth | Oncor | 13 – 15 ¢/kWh |
| Houston metro | CenterPoint | 14 – 16 ¢/kWh |
| Corpus Christi / South TX | AEP Texas | 13 – 15 ¢/kWh |
| Austin (municipal) | Austin Energy | 11 – 14 ¢/kWh |
| San Antonio (municipal) | CPS Energy | 11 – 13 ¢/kWh |
Why Texas AC Bills Still Get Huge
Even at 14¢/kWh, Texas summer bills routinely top $300 — because of runtime. A Gulf Coast August means 100°F afternoons and tropical humidity, so a 4-ton central system may run 10–12 hours a day. Humidity is the hidden cost: your AC burns energy condensing moisture out of Houston air before it even starts lowering the temperature. That’s why an identical home costs more to cool in Houston than in drier El Paso at the same thermostat setting.
- Watch out for “free nights” plans: they often carry premium daytime rates — exactly when your AC runs. Model your real usage with the calculator before switching.
- Beware usage-tier gimmicks: some REP plans only hit their advertised rate at exactly 1,000 or 2,000 kWh/month; heavy AC use can push you into a much worse effective rate.
- Summer demand response: programs from Oncor/CenterPoint and many REPs pay you to let them nudge your smart thermostat a few degrees during grid emergencies.
Cutting Your Texas Cooling Bill
- Keep the thermostat at 78°F — in a Texas summer every degree below that adds roughly 6–8% to cooling consumption.
- Change filters monthly in cottonwood/pollen season; restricted airflow forces longer compressor runtime.
- Shade the outdoor condenser (without blocking airflow) — a unit baking in direct west sun loses efficiency exactly at peak heat.
- Attic insulation and radiant barriers pay off faster in Texas than almost anywhere: attics hit 140°F+ and leak heat straight into your ductwork.
Frequently Asked Questions — Texas
How much does AC cost per month in Houston? A 4-ton system running 10 hours/day at 15¢/kWh comes to roughly $250–$350/month at summer peak. Plug your own tonnage and hours into the calculator above.
Is it cheaper to leave the AC on all day in Texas? A moderate setback (3–5°F) while away beats both extremes — full shutdown forces a long humid recovery, while holding 72°F all day wastes energy on an empty house.
Which is the cheapest electricity company in Texas for AC-heavy homes? There’s no single answer — compare EFLs at your real summer usage (often 1,500–2,500 kWh/month), not the advertised 1,000 kWh teaser rate.