AC Operating Cost - Burlington Heating And Cooling

AC Operating Cost Calculator Burlington, ON

Find out exactly what your air conditioner costs to run each month — using Burlington’s actual
Ontario electricity rates, not national averages.

⚡ Ontario Hydro Rates

📊 Monthly & Annual

🔒 Free

AC Size	SEER2 Rating	Approx. Monthly Cost (Ontario)	Annual Cost
1.5 tonnes	14 SEER2	$55 – $85	$110 – $170
2 tonnes	14 SEER2	$75 – $110	$150 – $220
2.5 tonnes	14 SEER2	$90 – $135	$180 – $270
2.5 tonnes	18 SEER2	$70 – $105	$140 – $210
3 tonnes	14 SEER2	$110 – $160	$220 – $320
3 tonnes	20 SEER2	$75 – $115	$150 – $230

*Estimates based on Ontario TOU off-peak rates where possible, ~8 hrs/day operation, 90 cooling days. Actual costs vary with usage patterns, home insulation, and rate plan.

Ontario Electricity Rates and Your AC Bill

Ontario's electricity structure has an outsized effect on AC costs compared to other provinces. The Time-of-Use rate structure means running your AC during an Ontario summer afternoon (4–9 PM weekdays) costs roughly twice as much per kilowatt-hour as running it at night or on weekends. Homeowners who shift their primary AC runtime to off-peak hours — pre-cooling the home in the morning, then raising the thermostat slightly in the afternoon — can reduce cooling electricity costs by 25–40%.

🌙 Off-Peak Hours (Cheapest)

Weekdays 7 PM – 7 AM, all-day weekends and holidays. Current rate: approximately $0.087/kWh. This is the best time to run your AC or pre-cool your home.

🌤️ Mid-Peak Hours

Weekdays 7 AM – 11 AM and 5 PM – 7 PM. Rate: approximately $0.113/kWh. Moderate cost — reasonable for brief morning and evening operation.

☀️ On-Peak Hours (Most Expensive)

Weekdays 11 AM – 5 PM. Rate: approximately $0.179/kWh. Running your AC hard during this window is the single biggest driver of summer electricity bills.

📊 Ontario Electricity Rebate (OER)

The provincial rebate reduces your electricity cost by approximately 11.7%. It's applied automatically to your Alectra or Hydro One bill — no application required. Our calculator includes this rebate.

Practical Ways to Cut AC Operating Costs in Burlington

Getting your electricity bill under control in a Burlington summer doesn't require suffering through the heat. These strategies consistently reduce operating costs without meaningfully reducing comfort.

💡 Burlington AC Efficiency Tips

Set the thermostat to 25–26°C instead of 22°C — every degree warmer saves 5–8% on cooling electricity

Pre-cool your home before 11 AM (off-peak) and let it coast through the expensive afternoon window on TOU billing

Close blinds on south and west-facing windows during peak sun hours — blocks 30–40% of solar heat gain

Use ceiling fans — they allow you to feel 3–4°C cooler at the same thermostat setting, dramatically reducing runtime

Keep the outdoor condenser clear of debris and make sure no shrubs are within 18 inches of the unit

Have a professional coil cleaning done every 2–3 years — dirty coils reduce efficiency by 15–20%

Frequently Asked Questions

Should I leave my AC on all day or turn it off when I leave?

For most Burlington homes, a programmable thermostat strategy beats both extremes. Set the thermostat to 27–28°C while you're away during the day's most expensive TOU hours (11 AM–5 PM), then pre-cool to 23–24°C starting around 4:30 PM (while still mid-peak but before the heat of the day fully radiates into the home). Turning off completely in July and August lets the home heat to 30°C+, which then takes significant energy to bring back down.

Is a smart thermostat worth it for a Burlington home?

For homes on Time-of-Use billing, smart thermostats pay for themselves quickly. A thermostat that automatically schedules around TOU peak hours typically saves Burlington homeowners $80–$150 per summer on electricity — and many can be configured to use real-time pricing data directly from Alectra. They're eligible for rebates through certain programs as well. Nest, Ecobee, and Honeywell's T9 are all solid choices for Ontario homes.

How do I calculate my AC's kWh usage manually?

The formula is: Tonnage × 1.2 ÷ SEER2 = kW per hour of operation. A 2.5-tonne, 14 SEER2 unit uses approximately 2.14 kW per hour. Running it 8 hours/day uses 17.1 kWh daily. At Ontario's blended rate of roughly $0.12–$0.14/kWh, that's about $2.05–$2.40 per day, or $60–$72 per month for a 30-day billing cycle.

⚡ Cut Your AC Bill

A properly maintained AC uses 15–20% less electricity. Annual tune-ups pay for themselves.