Best Thermostat Settings for Home Energy Savings in Every Season
- Jul 28
- 8 min read
A thermostat looks simple, but it controls one of the biggest energy users in most homes. Heating and cooling can take a large share of a household utility bill, so a few degrees can make a real difference over a season.
The goal is not to make the house uncomfortable. The goal is to set temperatures that match how people actually live: warmer when the home is active in winter, cooler when the home is active in summer, and less demanding when everyone is asleep or away.
For many homes, the best starting points are:
Winter heating
Set the thermostat around 68°F when home and awake.
Summer cooling
Set the thermostat around 78°F when home and active.
Away or sleeping
Adjust the temperature by 7°F to 10°F for several hours when it makes sense for your home and system.
Those numbers are not rules for every household. They are practical baselines. The right setting depends on insulation, humidity, sunlight, health needs, pets, and the type of HVAC system in the home.
Why thermostat settings affect energy bills so much
Your heating and cooling system works by fighting the outdoor temperature. The bigger the gap between indoors and outdoors, the harder the system has to work.
On a 25°F winter day, heating a home to 72°F creates a larger temperature difference than heating it to 68°F. That extra four degrees may feel small, but the furnace or heat pump must run longer to maintain it.
The same idea applies in summer. On a 95°F afternoon, cooling a home to 70°F takes much more energy than cooling it to 78°F. The air conditioner has to remove more heat from the home and may run almost nonstop during peak hours.
A thermostat setting affects bills in three main ways:
Run time
Lower heat settings in winter and higher cooling settings in summer usually reduce how long equipment runs.
Equipment strain
Extreme settings can make systems cycle too often or run for long periods.
Peak demand
Hot afternoons and cold mornings often cost more in areas with time-based electric rates.
Comfort matters too. If the temperature feels harsh, people tend to overcorrect. A home set too cold in summer may lead to blankets and space heaters. A home set too warm in winter may lead to open windows or short cycling equipment. A balanced setting saves more because it is easier to stick with.
The best thermostat settings for heating season
For winter, 68°F while awake and at home is a smart target for many households. It keeps most rooms comfortable while avoiding unnecessary heating.
If 68°F feels too cool at first, lower the setting gradually. Try 70°F for a week, then 69°F, then 68°F. The body often adapts, especially when the home supports comfort in other ways.
Lower the temperature when sleeping
Many people sleep well in cooler rooms. A nighttime setting between 60°F and 65°F can save energy, especially in homes that hold heat well.
A good winter schedule might look like this:
Time of day | Suggested heating setting |
Morning at home | 68°F |
Work or school hours | 60°F to 62°F |
Evening at home | 68°F |
Overnight | 60°F to 65°F |
This schedule is a starting point. A home with babies, older adults, health concerns, or temperature-sensitive pets may need warmer overnight settings.
Use smaller setbacks with heat pumps
Heat pumps are efficient, but many work best with steady settings. Large temperature setbacks can trigger backup electric heat in some systems. That backup heat can use much more electricity.
For a heat pump, try smaller setbacks, such as 2°F to 4°F, unless the system is designed to recover efficiently. Many smart thermostats have heat pump settings that limit backup heat use. Check the thermostat manual or ask an HVAC technician if the system often switches to auxiliary heat.
Improve winter comfort without raising the thermostat
Small changes can make 68°F feel warmer:
Wear warm socks or slippers.
Use heavier curtains at night.
Open curtains on sunny windows during the day.
Close fireplace dampers when not in use.
Seal obvious drafts around doors and windows.
Change HVAC filters on schedule.
A cold room can tempt people to turn up the thermostat, but the real issue may be air leaks, poor insulation, blocked vents, or an unbalanced duct system.
The best thermostat settings for cooling season
For summer, 78°F while home and active is a common energy-saving target. It reduces cooling demand while keeping the home manageable for many people.
Some households prefer 76°F or 77°F, especially in humid climates or sunny homes. Others can stay comfortable at 79°F or 80°F with ceiling fans and good shade. The best cooling setting is the warmest temperature that still feels comfortable.
Raise the setting when away
When the house is empty, raise the thermostat. A setting around 85°F can reduce cooling while protecting the home from extreme heat.
Do not turn the air conditioner off on very hot days if the home has humidity problems, pets, sensitive materials, or a long recovery time. A controlled higher setting often works better than shutting the system down completely.
A simple summer schedule might look like this:
Time of day | Suggested cooling setting |
Morning at home | 78°F |
Work or school hours | 82°F to 85°F |
Evening at home | 78°F |
Overnight | 76°F to 78°F |
Some people sleep better in a cooler room. If that is true, use fans, breathable bedding, and timed cooling rather than setting the whole house very cold all night.
Use fans the right way
Fans cool people, not rooms. A ceiling fan can make a room feel several degrees cooler because moving air helps sweat evaporate from the skin. That means the thermostat can often be set a bit higher without losing comfort.
Turn fans off in empty rooms. Leaving a fan on when no one is there uses electricity without improving comfort.
For summer fan direction, most ceiling fans should spin counterclockwise when viewed from below. This pushes air downward and creates a cooling breeze.
Control humidity
Humidity changes how temperature feels. A home at 78°F with low to moderate humidity may feel pleasant. A home at 78°F with high humidity can feel sticky and uncomfortable.
If the air conditioner cools the home quickly but leaves it humid, the system may be oversized, the fan setting may be wrong, or the home may have air leaks. Running the thermostat fan on `auto` instead of `on` often helps because it allows moisture to drain from the coil between cycles.
In humid regions, comfort is not only about temperature. Air sealing, proper drainage, clean filters, and HVAC maintenance all matter.
How programmable thermostats help when used well
A programmable thermostat saves energy when it follows a normal routine. It does not save much if it is programmed once and then constantly overridden.
The best schedules reflect real life. If the home is empty from 8 a.m. to 5 p.m., use a setback during those hours. If someone works from home three days a week, create a different weekday schedule or use a smart thermostat feature that senses occupancy.
Most programmable thermostats offer one of these scheduling styles:
7-day programming
Each day can have a different schedule.
5-2 programming
Weekdays share one schedule, weekends share another.
5-1-1 programming
Weekdays share one schedule, Saturday and Sunday are separate.
A 7-day model gives the most control. A smart thermostat can add remote access, learning features, energy reports, and alerts. Those features only help if the settings are reasonable.
Avoid the biggest thermostat mistake
Do not set the thermostat to an extreme temperature to heat or cool the home faster. Setting the air conditioner to 62°F will not cool most homes faster than setting it to 76°F. It only tells the system to keep running longer.
The same applies to heat. Raising the thermostat to 80°F will not warm the house faster in most forced-air systems. It may overshoot the target, waste energy, and reduce comfort.
Set the temperature you actually want. Let the system reach it.
Comfort and savings need to work together
The cheapest setting is not always the smartest setting. A home that feels miserable will lead to constant adjustments, portable heaters, extra fans, or poor sleep. The best thermostat plan balances savings with comfort.
Start with recommended settings, then adjust by one degree at a time. Give each change a few days before deciding. The home needs time to settle, and people need time to adapt.
Here are practical ways to find the right balance.
Match settings to the rooms you use most
If the thermostat is in a hallway, it may not reflect the temperature in bedrooms, sunny rooms, or finished basements. Use a small room thermometer to compare spaces.
If one room is always uncomfortable, check for:
Closed or blocked vents
Dirty air filters
Leaky windows
Poor attic insulation
Duct leaks
Direct afternoon sun
Electronics or appliances adding heat
Fixing the room problem often saves more than changing the thermostat for the whole house.
Pay attention to recovery time
Recovery time is how long the home takes to return to the comfort setting after a setback.
If the house takes too long to warm up in winter, start heating earlier or use a smaller setback. If the house takes too long to cool in summer, start cooling before the hottest part of the day or reduce heat gain from sunlight.
Many smart thermostats learn recovery time and start early. On a programmable thermostat, this feature may be called adaptive recovery or smart recovery.
Keep pets and plants in mind
Pets can usually tolerate a wider range than people, but they still need safe indoor temperatures. Breed, age, health, and coat type matter. Plants, aquariums, and temperature-sensitive items may also limit how far the thermostat can drift.
For most homes, an away setting should save energy without creating indoor extremes.
Energy-efficient habits that support better thermostat settings
Thermostat settings work best when the home helps the HVAC system do its job. These habits reduce wasted energy and improve comfort.
Seal air leaks
Air leaks around doors, windows, attic hatches, and plumbing penetrations let conditioned air escape. In winter, leaks pull cold air inside. In summer, they pull hot, humid air inside.
Weatherstripping and caulk are simple fixes for many visible leaks. Larger issues may need air sealing in the attic, basement, or crawl space.
Maintain the HVAC system
A dirty filter restricts airflow. That makes the system work harder and can reduce comfort. Check filters monthly and replace them as needed, especially during heavy heating or cooling months.
Regular maintenance also helps catch problems before they raise bills. A technician can check refrigerant levels, electrical parts, burners, blower components, condensate drains, and system safety.
Use window coverings with intention
Windows can be heat sources or heat losses.
In winter:
Open curtains on sunny windows during the day.
Close curtains after sunset.
Use insulated curtains where drafts are common.
In summer:
Close blinds or curtains on sun-facing windows.
Use exterior shade where possible.
Avoid adding heat near the thermostat.
Reducing solar heat gain in summer can make a higher thermostat setting feel much more comfortable.
Cook and clean with heat in mind
Ovens, dryers, and dishwashers add heat and humidity. In summer, use them in the morning or evening when possible. Outdoor cooking, microwaves, slow cookers, and air fryers can reduce indoor heat compared with a full-size oven.
In winter, indoor heat from cooking may help a little, but never use an oven as a heat source. It is unsafe and inefficient.
A smart seasonal thermostat plan
A good plan is simple enough to use every day. Try this seasonal approach:
Season | At home | Away | Sleeping |
Winter | 68°F | 60°F to 62°F | 60°F to 65°F |
Summer | 78°F | 82°F to 85°F | 76°F to 78°F |
Adjust these numbers for health needs, humidity, pets, insulation, and HVAC type. If the settings feel too aggressive, change them in small steps.
The biggest savings often come from consistency. A household that follows a steady schedule will usually do better than one that makes large, random changes throughout the day.
Set the thermostat based on occupancy, use fans and window coverings wisely, maintain the HVAC system, and fix comfort problems at the source. The right temperature settings can lower energy use without making home life feel like a sacrifice.
Comments