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What is the Best AC Setting in Summer for Comfort and Energy Savings?

When the summer heat rolls around, managing your home comfort can feel like a delicate balancing act. You want a cool, inviting house to escape the outdoor humidity, but you also want to avoid a shock when you open your monthly utility bill.

Finding the sweet spot for your air conditioner is the best way to keep your family comfortable while protecting your wallet. Here is a breakdown of the best summer AC settings for comfort and energy savings, along with practical tips to keep your cooling system running efficiently.

The Magic Number for Summer Energy Savings

If you want to maximize your energy savings, the average recommended thermostat setting during the summer is 26 degrees Celsius (78 degrees Fahrenheit).

While 26 degrees Celsius might sound a bit warm to some, the logic behind it is simple. The smaller the difference between the indoor and outdoor temperatures, the less energy your air conditioner uses. Keeping your home slightly warmer ensures your AC unit does not have to run constantly to maintain an unnaturally cold climate.

By turning your thermostat up just 2 to 3 degrees Celsius during hot days, you can lower your summer cooling costs by as much as 10 percent annually.

Balancing Personal Comfort: How Most Homeowners Set Their AC

Of course, a single temperature does not fit every lifestyle or comfort preference. Most homeowners find their personal comfort zone within these ranges:

  • When you are away from home: 24 degrees Celsius or higher. There is no need to pay to cool an empty house, so raising the temperature while you are at work or running errands is an easy way to save.
  • When you are at home during the day: 20 to 23 degrees Celsius. This range keeps active households comfortable without overworking the cooling system.
  • When you are asleep: 20 to 23 degrees Celsius. Cooler temperatures promote better sleep quality, making this a popular nighttime range.

The key to keeping your bills manageable is avoiding drastic temperature swings. Pick a consistent, comfortable temperature and try to stick to it rather than cranking the AC down to a freezing level after a hot day, which forces your system to work much harder.

The Role of Indoor Humidity in Staying Cool

Sometimes, a room feels uncomfortably warm not because of the actual temperature, but because of the moisture in the air. High humidity prevents sweat from evaporating off your skin, which is the natural way your body cools down.

If you struggle to stay comfortable at energy-efficient temperatures like 25 or 26 degrees Celsius, managing your home’s humidity can help. Maintaining an ideal indoor humidity level makes the air feel significantly cooler than it actually is.

Many homeowners use a whole-home dehumidifier to remove heavy summer moisture, allowing them to raise the thermostat by a couple of degrees without sacrificing comfort. On the other hand, if you experience dry summer heat, balancing the indoor moisture can help the air retain a more pleasant, refreshing feel.

Extra Tips to Keep Your Home Cool and Save Money

Adjusting your thermostat is just the first step. You can give your air conditioner a helping hand by adopting a few simple habits around the house:

  • Block out the sun: Use blinds, curtains, or shutters to block direct sunlight during peak afternoon hours. This simple step prevents the sun from naturally baking your living spaces.
  • Schedule a seasonal tune-up: Having an HVAC professional service your air conditioner before the peak of summer ensures that your system runs at peak efficiency, prevents unexpected breakdowns, and extends the lifespan of your unit.
  • Utilize ceiling fans: Fans do not cool the room itself, but they create a wind-chill effect on your skin. Running a ceiling fan allows you to set your thermostat a bit higher while still feeling perfectly cool.
  • Consider a smart thermostat: Upgrading to a programmable or smart thermostat allows you to set automated schedules. Your home can automatically warm up while you are at work and cool back down right before you walk through the front door.

Keep Your Cool All Summer Long

Finding the best AC setting for your home takes a little bit of experimentation, but aiming for a baseline around 24 to 26 degrees Celsius when possible will deliver noticeable savings.

If you want to ensure your cooling system is fully optimized for the summer heat, or if you need professional maintenance to keep your unit running smoothly, the team at Able Air is here to help. Reach out today to schedule your summer AC tune-up or to speak with an indoor comfort expert.

With over 20 years of experience in the HVAC industry, Able Air Conditioning & Heating proudly serves homeowners and businesses in Kitchener, Waterloo, Cambridge, Guelph, and nearby areas. Our award-winning team of licensed technicians is dedicated to providing reliable equipment and service our clients can trust.

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Able Air Conditioning & Heating
Able Air Conditioning & Heating
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1696 Google reviews
Yifan Wang profile picture
Yifan W
0 days ago
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Excellent service from Able! The technician John came to my home for the annual furnace tune-up and did a fantastic job. He was professional, friendly, knowledgeable, and very thorough. He took the time to check everything carefully and made sure the furnace was running properly. I really appreciated his attention to detail and excellent customer service. It was a great experience from start to finish. Highly recommend Able and John for their reliable and professional service!
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Lynn W
0 days ago
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Andre was very polite and acknowledgeable. He explained everything he was doing.
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Ozen R
0 days ago
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Ehsan Said and his partner did a very excellent and professional job. Came by early and finished within a few hours. No complaints. Everything works perfectly.
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Poorang
1 days ago
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Ehsan and Sam were great. Professional, punctual, responsive and fast. Definitely recommended. Phil is very knowledgeable.
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Kathleen D
4 days ago
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Very good experience with having new heating and A/C unit installed.
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Victor C
4 days ago
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Phil came by to diagnose an issue with my furnace. He did a fantastic job and the problem was resolved!
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Dani H
4 days ago
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Very quick and efficient.
Debbie K profile picture
Debbie K
5 days ago
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Shun and Jamin were both very professional, efficient and answered all my questions. Thanks!
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Am B
5 days ago
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This was our first dealing with Able Air Conditioning & Heating. We had our furnace serviced before winter. Phil was on time, courteous and did a detailed inspection of our furnace. Will definitely be using them again.
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Graham F
5 days ago
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Had a leak in my AC drain and these guys were great. Scheduling was prompt. Kyle, our HVAC tech, was awesome - super friendly, honest and good at what he does. No upselling, no nonsense. I would work with these folks again. Edit: had another visit from Phil, who was equally awesome! You can't miss with these guys!