For many U.S. households, 68°F while awake and lower temperatures during sleep or absences is a practical starting point for winter savings. The most cost-efficient setting depends on the heating system, local weather, insulation, and utility rates; lowering the thermostat can reduce energy use, but the dollar savings vary by home.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Suggested awake setting | 65°F | 68°F | 70°F | Comfort and health needs vary |
| Night or away setback | 5°F lower | 7°F lower | 10°F lower | Use a schedule suited to the heating system |
| Illustrative monthly savings | $5 | $20 | $50 | Example assumes a $200 monthly heating bill and about 5%-10% savings |
How much can a 68°F winter setting save?
Setting the thermostat near 68°F while people are home can balance comfort and heating expense. The U.S. Department of Energy recommends 68°F while awake and lower settings when a household is asleep or away. Its guidance says a setback of 7°F-10°F for eight hours a day may save up to 10% a year on heating and cooling, though actual savings are not guaranteed.
As a budgeting example, if a home spends $1,200 a year on heating, a 5%-10% reduction would equal roughly $60-$120 annually, or $5-$10 per month averaged across the year. A home spending $3,000 could save about $150-$300 annually. The estimate applies to the heating portion of the bill, not the full utility bill.
Assumptions: Savings examples use heating charges only and illustrate a 5%-10% reduction; actual results depend on climate, equipment, rates, and household schedule.
What makes up a winter heating bill?
Thermostat settings affect energy use, but fuel rates and the home’s heat loss also shape the final bill. The table gives illustrative monthly amounts for a home with a $200 winter heating charge. These are not national averages; regional rates and weather can produce substantially different bills.
| Bill driver | Low | Average | High | What changes the amount |
|---|---|---|---|---|
| Heating energy or fuel | $100 | $155 | $250 | Usage, fuel type, and utility rate |
| Delivery and fixed charges | $10 | $25 | $45 | Utility tariff and service area |
| Thermostat or control cost | $0 | $5 | $20 | Existing controls or optional equipment, averaged monthly |
| Air-sealing or filter upkeep | $0 | $15 | $40 | Maintenance needs and home condition |
Controls and upkeep figures are planning examples, not line items that appear on every utility bill. A programmable thermostat may cost around $20-$100, while a compatible smart model can cost roughly $80-$250 before installation. A basic filter may cost $5-$25, depending on size and type.
How far should the thermostat drop overnight?
A 7°F-10°F setback for about eight hours is a common efficiency target when the heating system can recover comfortably. For example, a home kept at 68°F during the evening might schedule 60°F-61°F overnight. A smaller 3°F-5°F setback can be more comfortable for households with infants, older adults, or people sensitive to cold.
Use a programmable schedule rather than repeatedly making large manual changes. Set the temperature back when the home will be empty for several hours, then schedule a return to the comfort setting before occupants arrive. Recovery time varies, so a house may need an hour or more to warm up, particularly after a deep setback in cold weather.
Do heat pumps need a different winter setting?
Heat pumps often work most efficiently with modest, steady settings instead of deep setbacks. Some systems use electric resistance backup heat when the thermostat calls for a rapid temperature increase; that backup can cost more to run. If a heat pump’s controls show “auxiliary” or “emergency” heat frequently after setbacks, consult the equipment manual or an HVAC technician about the schedule and thermostat configuration.
There is no single ideal setback for every heat pump. A 2°F-5°F overnight adjustment may be a reasonable trial, followed by checking comfort and the utility bill. Avoid switching a heat pump to emergency heat as a routine way to warm the house.
Why do climate and fuel rates change the savings?
A one-degree adjustment has more dollar impact in a cold region or a home with high heating rates. A mild-climate household with a $100 monthly heating bill might save only about $5-$10 in a month using a 5%-10% reduction. A colder-region home spending $500 could save roughly $25-$50 under the same illustrative percentage.
These examples show why percentage savings are more portable than a fixed dollar promise. Electric resistance heat, natural gas, propane, and heating oil have different costs per unit of heat, and local rates vary. Compare actual winter bills year over year while accounting for weather and changes in occupancy.
What does a thermostat schedule look like in real homes?
Schedules should reflect occupancy and equipment, not a universal temperature formula. These examples estimate potential monthly bill reductions using an illustrative 5%-10% range; they are not guaranteed outcomes.
| Home scenario | Heating bill | Setting plan | Illustrative monthly savings |
|---|---|---|---|
| Small, mild-climate home | $100 | 68°F home, 61°F overnight | $5-$10 |
| Average home with gas furnace | $250 | 68°F home, 60°F away or asleep | $13-$25 |
| Large, cold-climate home | $500 | 68°F home, modest scheduled setback | $25-$50 |
Which low-cost changes cut winter heating waste?
Weather-sealing and sensible scheduling can help without requiring a costly thermostat upgrade. Keep the thermostat away from direct sunlight, drafts, and heat-producing appliances, which can distort its reading. Replace a dirty furnace filter according to the equipment instructions; restricted airflow can reduce performance and strain the system.
Seal noticeable gaps around doors and windows, and close curtains at night while opening them to daytime sun where practical. These measures have varying costs: weatherstripping may run about $5-$30 for a small DIY project, while extensive air sealing can cost several hundred dollars or more. Compare quotes for larger work and prioritize confirmed leaks.
When is a lower winter setting not worth the discomfort?
Choose the lowest setting that remains safe and comfortable for the people and plumbing in the home. In freezing weather, do not let indoor temperatures fall so far that pipes in exterior walls or unheated spaces risk freezing. Follow local utility or plumbing guidance, especially when leaving a home vacant.
Households with health concerns may need warmer settings, and savings should not come at the expense of comfort or safety. If lowering the thermostat does not reduce bills, check the billing period, weather, rate changes, air leaks, and equipment operation before buying a new control. A thermostat upgrade helps most when it enables a schedule the household will consistently use.