There is no single winter thermostat setting that is best for every home: the U.S. Department of Energy (DOE) says people may choose the temperature that suits them. For energy savings, DOE’s 2022 guide suggests lowering the setting by 7–10°F for 8 hours a day in fall and winter; for cold-weather travel, the American Red Cross advises leaving the heat on at no lower than 55°F to help protect pipes.
These are adaptable recommendations, not guarantees. Your comfort, heating equipment, and the location and exposure of your plumbing all matter.
How to Choose a Winter Thermostat Setting
Start with a temperature that is comfortable for the people in your home, then consider whether a scheduled setback suits your routine and heating system. DOE’s 2019 statement says Americans should set thermostats to whatever temperature they choose; its energy-saving advice is an option for people who want to reduce energy use, not a mandatory comfort setting.
According to DOE’s 2022 Energy Saver: Tips on Saving Money and Energy in Your Home, lowering the thermostat by 7–10°F for 8 hours a day in fall and winter can save as much as 10% per year on heating and cooling. DOE presents this as potential savings, not a guaranteed result for every household.
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- 【Notice】Please make sure to read the installation and wiring instructions provided in the pictures carefully before buying. If you are inexperienced with installation, it is advised to be cautious when making a purchase to avoid issues like product failure or incompatibility. (Verify the existing base to ensure only 2 to 5 wires are compatible for installation and wiring).
- 【Thermostat Applications 1H/1C】for with Conventional Single-Stage Heating & Air Conditioning, up to 1 Heat and 1 Cool. Gas/Oil/Electric Furnace (Heat only), Boiler Radiant (Heat only), Furnace Forced-Air (Heat Only), Gas Fireplace (24 Volts), Cooling Only, Only 1H/1C Heat Pump (without aux) Systems.
- 【Incompatible Systems】Does not work multistage systems (1H/2C, 2H/2C), HVAC heat pump systems (2H/1C, 4H/2C), PTACs, 3-wire hydronic (hot water), dual fuel/hybrid heating. Does not work line voltage systems (120-240V electric baseboards heat); mini split heat pump air conditioner, RV air conditioners mach and roughneck series.
- Suuwer S705 5-1-1 day programmable thermostat 1 Heat/ 1 Cool. Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, return and sleep.
- 【Technical support】 Separate heat or cool swing set up (0.2°F to 2°F) and 5 minute compressor delay protection (Selectable ON or OFF). Digital thermostat has a built-in battery change and filter change reminders (Set 50-2000 hours)
When to Use a Setback
A setback may suit times when the home is regularly unoccupied or people are asleep. A compatible programmable thermostat can automate a schedule. Choose a schedule that works for your household, and confirm that the thermostat is designed for your heating equipment.
Heat-pump owners should take particular care: DOE’s 2022 guide says not to use the setback advice without a smart or programmable thermostat designed for heat pumps. Check the thermostat’s compatibility with your system before setting a schedule.
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- PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
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- SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you don’t have to patch and paint your walls
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What to Do When You Leave in Cold Weather
For an absence during cold weather, the American Red Cross advises leaving the heat on and setting the thermostat no lower than 55°F. It also advises keeping the thermostat at the same temperature day and night to help avoid frozen pipes. This is prevention guidance, not a guarantee that pipes will not freeze or a universal code requirement.
Pipe-freezing risk depends on conditions in the home. The Red Cross identifies pipes exposed to severe cold and pipes in unheated areas—such as basements, crawl spaces, attics, garages, and kitchen cabinets—as vulnerable. Pipes along poorly insulated exterior walls are also at risk.
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- · High Compatibility: Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o auxiliary or emergency heat, Millivolt, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems.(TIP: Before purchasing, check to see if this thermostat is compatible with your system.)
- · Not Compatible: Heat pump with auxiliary or emergency heat, Dual fuel/hybrid heating, Electric baseboard heat (110-240 volts), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems and 12V RV systems.
- · Easy to Install and Use: Large terminal blocks with universal sub-base, can be installed within 30 minutes, Large, clear, easy-to-read backlight LCD display and easy controls make for a user-friendly experience.
- · Factory Pre-set Energy-efficiency Program: 7-day, 5/1/1 easy-to-understand programming menus, flexible programming lets you sync your comfort with your schedule.
- · Reliability: Made by professional manufacturer and backed by over 20 years of experience, the customer service is 7*24 hrs available.
For vulnerable plumbing, consider insulating exposed pipes and improving insulation in the areas where they run. The Red Cross identifies pipe sleeves and listed heat tape or heat cable as options to consider. A thermostat setting alone cannot ensure that every pipe is protected.
Thermostat Options for Scheduled Setbacks
A programmable thermostat can put a setback schedule into practice, but compatibility with your heating system comes first. DOE specifically cautions heat-pump owners to use a smart or programmable thermostat designed for heat pumps before following its setback advice.
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- Simple Manual Operation: Heagstat H705 1 Heat/1 Cool, 5-1-1Day Programmable Thermostat (Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, return and sleep). The user-friendly design is easy to operate for people of all ages
- System Compatibility: Works with conventional single-stage systems, including Forced air (gas, oil, or electric) & Ventilation & Air Conditioning. It supports up to 1 heating stage and 1 cooling stage. Please confirm your home HVAC system type before purchase to ensure full compatibility
- System Limitations: This unit does NOT work with multi-stage systems and heat pump systems (2H/1C, 2H/2C, 3H/2C, 4H/2C: Multi-Stage Heating & Cooling), PTAC units (Packaged Terminal Air Conditioners), 3-wire hydronic hot water heating systems, dual fuel/hybrid heating systems, 120-240V line voltage systems and electric baseboard heaters, mini-split heat pump air conditioners, and RV air conditioners (Mach/Roughneck series)
- No C-Wire Required Design: Dual power supply design runs on 24VAC hardwired power or 2 AAA batteries (batteries not included). Equipped with standard RH, RC, W, Y, G and C terminals. Wire Specs: Use 18-22 gauge thermostat wire. Shielded wire is not required. Easy DIY installation without professional help. It does not support W2, Y2, O/B, E, L, AUX, ACC+, ACC-, S, X and X2 terminals
- Clear & Easy-to-Read Display: Minimalist off-white body matches most home interior styles. The 4.5 sq inch backlit LCD screen delivers clear visibility under all lighting conditions. Compact dimension: 0.98 inches D x 4.72 inches W x 3.86 inches H, allowing flexible wall mounting
| Practical consideration | What to check |
|---|---|
| Scheduled setbacks | Whether the thermostat can follow a schedule that fits your routine. |
| Heating-system compatibility | Whether the thermostat is suitable for your specific heating equipment. |
| Heat-pump operation | Whether the smart or programmable thermostat is designed for heat pumps, as DOE advises. |
FAQ
What is the best winter thermostat setting?
There is no universal best temperature. DOE says people may set their thermostats to the temperature they choose. Its 2022 guide offers a 7–10°F setback for 8 hours a day as an energy-saving option.
How much can lowering the thermostat save?
DOE’s 2022 Energy Saver guide says lowering the setting by 7–10°F for 8 hours a day in fall and winter can save as much as 10% per year on heating and cooling. The figure is potential savings, not a promise for every home.
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- An Alexa thermostat - Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
- Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
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- Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $90 on yearly energy bills.
- Programmable thermostat and automatic control - Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
Should I lower the thermostat if I have a heat pump?
DOE advises not to use its setback recommendation with a heat pump unless you have a smart or programmable thermostat designed for heat pumps. Check compatibility with your system.
What temperature should I leave the heat at when away in winter?
The American Red Cross advises leaving the heat on and setting the thermostat no lower than 55°F when away in cold weather. This helps reduce frozen-pipe risk but does not guarantee pipes will be safe in every home.
Which pipes are most at risk of freezing?
The Red Cross identifies pipes exposed to severe cold, pipes in unheated basements, crawl spaces, attics, garages, or kitchen cabinets, and pipes along poorly insulated exterior walls as vulnerable.
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