What is the Best Temperature to Set My Air Conditioner in the Summer?

What temperature to run the air conditioning in families, companies, and elsewhere it's pretty much always up for debate. Well we're here to put opinions to rest and give you the official lowdown on what temperature to run your air conditioner this and every summer. Here's a hint: it's all about balance.

Walking into an air-conditioned home on a sweltering summer day is like that proverbial glass of cold water – cooling, refreshing, and bringing an overall sense of relief. But depending on where your HVAC temperature is set, that initial positive can turn negative when you get your energy bill.

What temperature to run the air conditioning – in families, companies, and elsewhere it’s pretty much always up for debate. Well we’re here to put opinions to rest and give you the official lowdown on what temperature to run your air conditioner this and every summer. Here’s a hint: it’s all about balance.


Since everyone is different and each individual has differing heat tolerance, this guidance is coming mainly from an energy-use and efficiency perspective. So factors like your own preference, local energy costs, and how well-insulated your home could change the equation.

For many people, an indoor temperature ranging from 72„‰ to 78„‰ can be comfortable. Ask around the HVAC world and check industry standards and you’ll see 78„‰ generally recommended as the ideal indoor temperature for both the best efficiency and most affordable cost. We don’t always think about expenses when we’re desperately hot from working outside, but the truth is enlightening. Did you know that with each degree you raise or lower the temperature indoors, energy costs can shift by 1-3%? Over the course of a season, and depending on your local energy rates, that can really add up.

Besides setting the daytime temperature at around 78„‰, you can also increase temperatures while you’re away working, shopping, or otherwise out of the house. You might be tempted to just turn the system off, but the air conditioning system will end up drawing more power to re-cool your home than it will to keep a consistent temperature all day. So what temperature should you aim for while you’re gone? Some experts recommend temperatures in the low-to-mid 80s, but you need to choose what’s best for you and your family.

If you follow a pretty regular routine, using a programmable thermostat can take the guesswork out of temperature control. This way you can easily customize settings to ensure that your home is always at the right temperature, whether you do or don’t remember to adjust the thermostat, or whether you’re home or not. A smart thermostat is another option, and it allows you to control your home’s temperature from afar. There are various factors to consider before opting for this technology, and we’re happy to discuss your options.


If setting the temperature to 78 seems a little high for your liking, remember: this is all up to you in the end. We’re just sharing some key information to help you make an informed decision. We can also offer a variety of tips and simple steps you can take to boost your HVAC system’s efficiency and optimize your indoor temperatures while still conserving energy and keeping costs down. 

  • Use fans: Ceiling fans and portable or floor fans can do wonders to better distribute cool air. Moving air also allows you to feel cool and comfortable, even at a higher temperature.
  • Opt for natural ventilation: The occasional cool, low-humidity morning or evening is a gift. Open the windows and screens on doors for a free cross-breeze, and close things back up before temperatures rise or humidity builds.
  • Cover the windows: Sunlight streaming into a room will quickly heat things up. Use shades, blinds, or curtains to block the sun. Special reflective, thermally-insulated curtains are available, as are films that can be applied to the glass itself.
  • Seal and insulate: Make your AC’s job easier by preventing cool air from escaping or hot air from invading – use weather stripping, caulk, or another material to seal doors, windows, and any other potentially drafty spots.
  • Use appliances mindfully: Wait until the naturally cooler evening hours to run heat-producing appliances, and make it a habit to turn off electronics and lighting when they’re not in use. 
  • Keep up with maintenance: Simple DIY tasks like replacing air filters and cleaning coils can go far to keep your home cool.

If you’re following these suggestions and your home still feels like it’s overheating at a reasonable thermostat setting, it could be time to look into air conditioning repair. Fred’s Home Services is always here to help.


Although 78° F is a universally recommended temperature for energy savings and comfort during the day, it is not ideal for restful sleep. Higher nighttime temperatures can actually work against the body’s natural cycles, causing a restless night. But too cold isn’t a good option either. A balanced number is somewhere in the mid-to-high 60s, and of course this can vary from person to person. This general recommendation is just one way to optimize indoor air quality for better sleep year round.


At Fred’s Home Services we work hard to make sure that our clients have the best, most comfortable indoor environment possible. We also realize that the cost to cool your home is always shifting, and we know the value of your hard-earned assets. So if you’re finding that your home’s cooling system isn’t keeping up with your preferred comfort level, don’t bother searching for “air conditioning repair near me.” Instead, give the team at Fred’s Home Services a call. It’s our joy to keep our community safe and comfortable, even during the worst summer heat. We look forward to making your living space work for you – get in touch today!


Do you have any questions? We’ll be happy to answer them ASAP

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