Not sure what temperature to set your AC? Call McMullen’s for expert HVAC advice and maintenance: +1 (403) 342-1155
Finding the right temperature setting for your air conditioner is more than just a comfort issue—it affects your energy bill, your indoor air quality, and even the lifespan of your cooling system. Especially during Alberta’s unpredictable summers, choosing the right AC settings can help you stay cool without overpaying for electricity.
What’s the Best AC Temperature Setting for Alberta Summers?
If you’re wondering what temperature to set your air conditioner to during the summer, you’re not alone. It’s one of the most common questions we hear. The short answer? It depends on your comfort, but most Alberta households feel good around 20C to 23°C (68°F to 73°F), however, recent studies suggest 22°C to 25°C (72°F to 78°F)
Why that range?
- 25°C (78°F) is what Energy Star and Natural Resources Canada suggest for efficiency.
- But in real life, many people in Alberta prefer it a little cooler, especially during heat waves or if your home gets a lot of afternoon sun.
- Try setting it to 25°C and adjusting slightly down if it feels too warm. Even going a degree or two cooler can make a big difference in how comfortable your home feels.
And remember: turning the temperature way down won’t cool your home faster. It just makes your system work longer. Smart thermostats and ceiling fans can help you stay cool without overworking your AC.
Tips to Maximise Comfort Without Spiking Energy Bills
- Use a programmable thermostat to automatically adjust settings while you’re out or asleep.
- Close blinds or curtains in the afternoon to reduce heat from sunlight.
- Run ceiling fans counter-clockwise to circulate cool air more effectively.
- Keep up with AC maintenance to ensure your system is operating efficiently. A clogged filter or dirty coils can make your AC work harder than necessary.
- Upgrade to a smart thermostat to better control your indoor temperature and reduce wasted energy. There are also rebates available in Alberta, however, new rebates and financing options are frequently introduced—check with your local municipality or utility provider for updates.
- City of Red Deer offers a $50 rebate for eligible smart thermostats in homes with a city utility account. Learn more
Common Myth: “Only turn on/run my AC when I need it”
Although it may seem like a money-saving measure, turning your AC on only when you’re home actually drives up your energy costs. Letting your AC run at a higher, consistent temperature when you are away is more energy-efficient than allowing the home to reach full summer temperatures. When you do finally turn back on your AC, just like an engine working up a hill, your AC has a bigger workload to restore comfortable temperatures.
This is why we recommend a scheduled/programmed thermostat, where you can run your home slightly warmer during work hours, and slow down the system during the cool parts of the night. Keeping your system running efficiently and saving you money.
When to Adjust Your AC Settings
Your ideal setting may vary depending on your lifestyle. Consider adjusting your temperature when:
- Hosting guests
- Sleeping (many prefer it cooler at night)
- Going on vacation
Just don’t turn it off completely when you leave home during a heat wave. Extreme temperatures can damage electronics and furniture, and your system will have to work extra hard to catch up.
Professional AC Tune-Ups Make a Big Difference
If your AC seems to struggle maintaining your preferred temperature, it may be time for a tune-up. McMullen’s offers complete AC maintenance and repair services to ensure your system runs at peak performance. Learn more: What Is an AC Tune-Up?
Call McMullen’s for Summer AC Support in Central Alberta
For over 60 years, McMullen’s Refrigeration & Heating has helped Red Deer and Central Alberta homeowners stay cool, comfortable, and efficient through every season. If your air conditioning system needs an inspection, repair, or just some seasonal advice, our expert team is just a call away.
Contact us today: +1 (403) 342-1155
