Summers in the Durham Region can be incredibly beautiful, but they also bring intense heat and thick humidity off Lake Ontario. When July and August hit, it’s tempting to crank your air conditioner down to its lowest setting and leave it running 24/7.

However, forcing your AC to work overtime doesn’t just lead to jaw-dropping utility bills—it also accelerates wear and tear, potentially leading to a costly mid-summer breakdown.

The good news? You don’t have to sacrifice your comfort to save your cooling system. Here are some of the most effective ways to keep your Durham Region home cool and comfortable without overworking your air conditioner.

1. Harness the Power of Window Coverings

One of the easiest ways to cool your house is to stop the heat from getting inside in the first place. Greenhouse gas effects happen right in your living room when sunlight streams through your windows.

• Close the Blinds: Keep south- and west-facing blinds or curtains closed during the peak sun hours (usually between 11:00 AM and 4:00 PM).
• Invest in Thermal Curtains: Medium-colored draperies with white-plastic backings can reduce heat gains by up to 33%, keeping your home noticeably cooler before your AC even kicks on.

2. Optimize Your Ceiling Fans

Ceiling fans don’t actually cool the air in a room; instead, they cool you by creating a wind-chill effect on your skin.

• Check the Rotation: Ensure your ceiling fans are rotating  counterclockwise in the summer. This pushes a cool breeze straight down.
• Turn Them Off When You Leave: Because fans cool people and not rooms, leaving a fan running in an empty room is just wasting electricity. Turn it off when you walk out to save energy.

3. Manage Your Home's Humidity

In Durham Region—especially in waterfront communities like Oshawa, Ajax, and Pickering—humidity is often the real culprit behind summer discomfort. When the air is humid, your sweat can’t evaporate, making you feel much warmer than the actual thermostat reading.

• Use Exhaust Fans: Always run your bathroom exhaust fans during showers and kitchen fans while cooking to vent moisture outside.
• Consider a Whole-Home Dehumidifier: By lowering the humidity inside your home, you can comfortably set your thermostat a few degrees higher without feeling the difference.

4. Keep Up with Basic AC Maintenance

Your air conditioner has to work twice as hard if it’s fighting against dirty components or restricted airflow. A little preventative maintenance goes a long way.

• Change Your Air Filters:  Check your HVAC filter once a month during the peak cooling season. A clogged filter restricts airflow, forces the system to run longer, and can even cause your evaporator coils to freeze.
• Clear the Outdoor Condenser: Take a walk outside and check your exterior unit. Ensure there are no weeds, tall grass, or patio items blocking the airflow around it. It needs space to dump the heat from your home effectively.

5. Be Strategic with Your Thermostat

Setting your thermostat to 18°C won't cool your house down any faster than setting it to 22°C; it just forces the compressor to run much longer.

• The 4-Degree Rule: Try setting your thermostat a few degrees warmer when you’re away from home or sleeping.
• Install a Smart Thermostat: A smart thermostat can learn your schedule and automatically optimize temperatures, ensuring you aren't paying to cool an empty house while guaranteeing a crisp, cool environment the moment you step through the door.

Need a Summer AC Tune-Up? We’re Here to Help!

If your air conditioner is blowing warm air, making strange noises, or causing your energy bills to skyrocket, it might be crying out for professional help. Keeping your system running efficiently is exactly what we do.

At Walchuk Heating and Cooling, we’ve been keeping families across Oshawa, Whitby, and the broader Durham Region comfortable through every seasonal shift. Whether you need a preventative maintenance tune-up or are looking to upgrade to a highly efficient new cooling system, our team of local experts is just a call away.

👉 Contact Walchuk Heating and Cooling today to schedule your AC service!