Pennsylvania AC Electricity Cost Calculator

What Air Conditioning Costs in Pennsylvania

Pennsylvania summers are shorter than the Sun Belt’s, but July–August heat waves push Philadelphia and Pittsburgh well into the 90s with thick East Coast humidity — and Pennsylvania’s electricity is not cheap. The 2026 average all-in rate is about $0.20 per kWh (pre-filled in the calculator above), and because PA has a deregulated electricity market, what you actually pay depends on both your utility’s delivery charge and the supplier you’ve chosen (or defaulted into).

Pennsylvania Utility Prices at a Glance (2026)

The Deregulation Angle: Your Supplier Choice Moves the AC Bill

In Pennsylvania you can shop your electricity supply (the generation portion, roughly half the bill) on the state’s official comparison site, PAPowerSwitch. For AC-heavy households this matters:

• Default (“Price to Compare”) rates change quarterly — PECO’s and PPL’s PTC often jumps for the summer quarter, exactly when your usage peaks. Check it each June.
• Fixed 12-month supplier contracts around or below the PTC protect your summer usage from those resets; beware teaser rates that balloon after 3 months.
• The math: shaving 3¢/kWh off supply saves about $18/month on 600 kWh of summer AC usage — run your own scenario in the calculator above at both rates.

Cooling Choices in the Keystone State

• Window units still rule Philly rowhomes: a 10,000 BTU unit at 18¢/kWh costs roughly $1.60–$2.20 per 8-hour day per room — three units all summer can rival central-air costs.
• Ductless mini-splits are the efficient upgrade for rowhomes and older housing stock without ducts — roughly 30–40% less energy than window units for the same cooling, plus efficient shoulder-season heating.
• 78°F setpoint with fans, blinds closed on south/west windows through the afternoon — PA’s humidity makes moisture control (or a dehumidifier in the basement) worth as much comfort as extra cooling.
• PECO and PPL both offer rebates on high-efficiency central AC, heat pumps, and smart thermostats — check current programs before replacing equipment.

Frequently Asked Questions — Pennsylvania

How much does central AC cost per month in Philadelphia? A 3-ton system running 7–8 hours/day at PECO rates lands around $140–$220/month in July–August. Enter your exact rate and hours in the calculator above.

Why did my PA electric bill spike this summer? Usually a stacked effect: peak AC runtime plus a quarterly Price-to-Compare reset, or a supplier teaser contract expiring into a high variable rate — check your supply rate line first.

Are window ACs or mini-splits cheaper to run in PA? Mini-splits use roughly a third less electricity for the same cooling; at 18¢/kWh the operating savings are real, though window units win on upfront cost for occasional use.

Background: refrigerants and their properties.