The Best Temperature Settings to Save You Money, Time and Stress

Everyone has a different idea of a comfortable temperature. But when energy bills start rising, especially during the hottest months of the year, a more important question arises: What’s the best temperature that keeps people happy, but also saves us money?

Actually, the answer is a couple of different temperatures, and they vary with the seasons and other factors like the time of day. But by using my simple guide, you can set the optimal range so everyone gets the best results without hurting your wallet. It’s even easier with a smart thermostat, but these tricks work for every model, especially if you can set schedules. 

This is the ideal thermostat temperature for the winter

In the winter, experts recommend that you set your thermostat to 68 degrees Fahrenheit when you’re home, and 60 to 65 degrees when you’re asleep or away.

You can set it higher, but that will reduce efficiency and lead to higher energy bills. It also depends on the weather outside, said Julian Picard, owner of HVAC company Centerline Mechanical. If it’s 20 degrees Fahrenheit outside, maybe don’t set your thermostat to 80 degrees, he advised.

Then there’s the question of changing the temperature at night or when you’re not home. The Department of Energy suggests you turn your thermostat back 7 to 10 degrees from its normal setting for 8 hours a day, saying that can save as much as 10% a year on heating and cooling. 

Picard suggested a smaller change: Lower the temperature by just four degrees when you’re away or asleep. This means your system won’t have to work quite as hard to get back to temperature.

“You don’t want to have drastic changes in temperature,” said Mahlie Dukes, franchise owner of WIN Home Inspection in Indiana.

You should also get to know your specific heating system. If you notice, for example, that your home never gets up to the temperature you set, that could be a sign that your system is improperly sized for your home, Picard says. And it’s a cue to lower your thermostat setting so your HVAC won’t constantly be working on overdrive.

Read more: You Can Actually Save Money by Using Electricity at These Specific Times

This is the ideal setting for the summer

In the summer, the ideal temperature for your thermostat is 75 degrees Fahrenheit to 78 degrees Fahrenheit when you’re home, and 80 degrees Fahrenheit when you’re away or asleep, Dukes said. The Department of Energy suggests 78 degrees Fahrenheit during the day, 82 degrees Fahrenheit when you’re sleeping and 85 degrees Fahrenheit when you’re not home.

Most importantly, you want to make sure your system can handle the settings. If you notice that the house never gets as cool as your thermostat setting, that probably means your system is not sized well for your home, and you might want to ease up on the cooling. You may also want to check on how well sealed your doors and windows are and how well insulated your home is. 

Air conditioners can only really cool your home to 15 to 20 degrees below the outdoor temperature, so setting the thermostat too low can result in your system running without being effective. 

Read more: Thinking of Buying a Portable AC? 5 Things You Need to Know Before You Do

Does it matter what type of HVAC you have?

Yes and no. The same general temperature recommendations apply regardless of the type of HVAC you have in your home, Picard says.

However, your results may vary depending on the type and size of your system. Systems that are over- or undersized for your home will run inefficiently, leading to higher heating and cooling costs. This is why Picard recommends that you have an HVAC professional inspect and clean your system annually. These pros can tell you how best to use your specific system for optimal comfort and efficiency, he said.

Finally, heat pumps are already very efficient, so those who use them may not see the same price savings as people who have furnaces. Fortunately, savings are still apparent with smart thermostat learning and evident in other areas of the home, like cutting down on gas fireplace use.

Avoid this common thermostat mistake

Say your home is quite a bit colder than you’d prefer, and you want it to be perfect now. It may be 65 degrees Fahrenheit inside, and you may want it to be 70 degrees Fahrenheit. Don’t set it to 75 in the hopes that it will warm it up faster. Most HVAC units have two settings — on or off — and there’s no getting to 70 degrees Fahrenheit any faster.

Set your thermostat to the temperature you want it to be. Setting to a warmer or cooler temperature than you actually desire in the hopes that will speed things along will just result in overcooling or overheating — and overspending on your energy bills.

Is your thermostat in the wrong place?

Your thermostat knows how to set the temperature because it has a thermometer inside it. So if your thermostat is in the wrong spot, it won’t give you an accurate reading of the temp in your home. 

You want to avoid having your thermostat in a location that sees frequent changes in temperature or humidity, like in the kitchen or bathroom. If it’s on an exterior wall, it might be more sensitive to outdoor temperature changes, too. Instead, try to position your thermostat on an interior wall in a location such as your living room.

If your thermostat supports external room sensors, having sensors in other locations — like a bedroom — can help you better regulate the temperature in the rooms where you spend most of your time. 

Major thermostat brands including Ecobee and Nest offer these satellite sensors and various ways to let thermostats use their data, allowing for customization. But be careful — put the sensor in a spot that’s too cold or hot and it could put your thermostat into overdrive, wasting money.

Save money with a thermostat and insulation check

Reducing your energy bills this year doesn’t have to be hard.

“There’s a huge misconception that in order to be energy efficient, you must be uncomfortable,” Picard said.

Homeowners can also look at areas beyond their thermostat. Investing in good insulation, for example, can greatly reduce how much strain you put on your HVAC system.

“You’d be surprised how much energy we blow right through our attics,” Picard said.

That annual inspection and maintenance appointment can also help save you money. Picard said buildup within your HVAC system can lead to efficiency losses of up to 10% annually, which you’ll see on your energy bill. That’s why having it cleaned every year is a good move.

And if you’re in the market for a new HVAC system, it’s a great time to take stock and make sure what you have fits your specific home.