Canadian summers may be short, but they can be hot and humid, making air conditioning (AC) essential for comfort. Setting the right AC temperature isn’t just about staying cool — it also affects your energy bills and environmental impact. This guide will help you find the best temperature for AC in summer in Canada, along with energy-saving tips and smart strategies.

Ideal AC Temperature Range in Canada

For most Canadian homes, the ideal indoor temperature for summer falls between 22°C and 25.5°C. This range provides a balance between comfort and efficiency. If you prefer cooler air, aim for 22°C, but if you’re focused on saving energy, 25.5°C is a good benchmark.

Every degree above 22°C can reduce your energy consumption by 3% to 5%, which can significantly cut down your cooling costs over the summer.

Factors That Affect AC Temperature Settings

1. Humidity Levels

Humidity plays a big role in how we perceive heat. In coastal cities like Vancouver or Halifax, the higher humidity can make 25°C feel much warmer. A lower thermostat setting may be more comfortable in such areas. In contrast, cities like Calgary or Regina are drier, meaning you can keep the thermostat a bit higher without discomfort.

2. Home Insulation and Design

Older homes or poorly insulated ones may struggle to retain cool air, requiring lower AC settings. Well-insulated, energy-efficient homes allow you to maintain comfort at higher temperatures with less effort from your AC.

3. Number of Occupants

More people in the house means more body heat and potentially more activity, both of which raise the indoor temperature. If your home is full, consider setting the AC a degree or two lower.

Optimize AC Efficiency for Comfort and Savings

Use Fans for Circulation

Ceiling or portable fans help circulate cool air more evenly, allowing you to raise the AC temperature slightly without feeling warmer. This simple trick reduces reliance on your cooling system.

Maintain Your Air Conditioner

Regular air conditioner maintenance is critical. Clean or replace filters every 1–2 months, check refrigerant levels, and clear debris around outdoor units. A well-maintained system cools better and lasts longer.

Keep the Sun Out

Block direct sunlight by closing blinds or curtains during the hottest hours of the day. This keeps indoor temperatures stable and lowers the strain on your AC system.

Use Natural Ventilation

Open windows in the early morning or late evening when it’s cooler outside. This can flush out warm air and reduce the need for cooling.

Smart Thermostats Make Cooling Smarter

Installing a smart thermostat can make a big difference. These devices learn your routine, automatically adjust temperatures, and let you control your system remotely. You can set your thermostat to increase the temperature while you’re away and cool the house before you return.

Smart thermostats are a valuable investment, especially for those looking to save energy on AC during Canadian summers.

Set the Right Temperature for Different Situations

• When Sleeping: Most people sleep better in cooler environments. Set your thermostat to around 18°C to 20°C for restful sleep. For babies or seniors, a slightly warmer room (around 20.5°C) may be better.
• When Away: Avoid turning off your AC entirely. Instead, raise the temperature to 28–31°C. This prevents your home from overheating and keeps your system from working too hard when you return.
• During the Day at Home: If you’re active at home during the day, a setting of 25°C to 26°C with a fan is usually comfortable and energy-efficient.

Think Long-Term: Energy and Environment

Being mindful of your AC usage helps reduce your environmental impact. Avoid overcooling your home, invest in energy-efficient appliances, and adopt smart habits like using fans and natural ventilation. Small adjustments lead to big savings and a healthier planet.

Conclusion

Finding the best AC temperature for summer in Canada depends on where you live, how your home is built, and what feels comfortable for your family. Stick to the 22–25.5°C range, use fans and smart thermostats, and maintain your system for optimal performance.

Your comfort doesn’t have to come at the cost of high energy bills. A few thoughtful changes can help you enjoy the summer indoors—cool, comfortable, and cost-efficient.

Ready to make your home more energy-efficient this summer?

Talk to Alliance Energy Source certified HVAC professionals today to get a personalized cooling plan and energy-saving tips that work for your home.

Contact Information:

Phone: 416-259-6767

Email: alliance.markham@gmail.com