Whether your thermostat fan should be "ON" or "AUTO" in the winter depends on your priorities. Generally, setting it to AUTO is best for saving energy, while setting it to ON is better for maintaining a consistent temperature and improving indoor air quality.
In winter, setting your thermostat fan to Auto is generally the best choice for energy efficiency and lower utility bills, as the fan only runs when the heating system is actively producing warm air. Use On only if you need to eliminate cold rooms or improve air filtration.
Most systems should run 10–20 minutes per cycle, two to three times per hour in mild weather. In extreme heat or cold, the fan may run longer to maintain comfort.
Setting to 65 degrees in Winter and to 78 degrees in Summer while at home and switching to energy saving mode when away can help save energy.
The recommended temperature for your home during winter is typically between 68°F and 70°F while you're awake and at home. This range strikes an excellent balance between comfort and cost-effectiveness.
No, 68°F is not generally considered cold for a house in winter. In fact, experts at the U.S. Department of Energy recommend 68°F as the ideal, energy-efficient temperature for the winter months while you are awake.
To keep your pipes from freezing, run a slow trickle of cold water. The temperature of the water itself isn't as important as the movement; running water inhibits ice crystal formation. You should start running your faucets at a steady drip when exterior temperatures drop to 𝟐𝟎∘𝐅 or below.
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.
What is the Best Temperature to Keep Your House in the Winter? The average ideal room temp is around 68–72° F in the winter, depending on your personal preference.
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
Sleeping with a fan on isn't inherently dangerous, but the continuous airflow can dry out your mouth, nasal passages, and skin. This dryness can trigger your body to overproduce mucus, leaving you with congestion or a sore throat. It can also circulate dust and allergens, worsening asthma and allergy symptoms.
Heating Schedules. Keep to a steady heating schedule over winter to keep a home consistently cozy. HVAC technician Josh shares, 'On average, in winter weather, most furnaces or boilers will cycle on and off for eight to 12 hours per day. That's assuming daytime temps around 35-45°F (1 to 7°C) and nights in the 20s.
In the winter, your ceiling fan should be spinning clockwise. When set at a low speed, your ceiling fan draws cool air up and forces warm air down.
If you'd like to calculate your ideal HVAC fan runtime, here's a simple formula: Measure the square footage of your home. Divide the square footage by 2. This number represents the number of minutes your HVAC fan should run per hour.
Is it best to have your thermostat fan set to On or Auto? The most energy efficient option is to keep your thermostat fan set to Auto. This prompts your AC fan to turn on when needed and then off when the job is done, rather than running continuously. This setting will also help save on your electric bill.
There are two settings on your thermostat to control the fan – auto or on. AUTO means that the fan turns on automatically only when your system is heating or cooling air. Once the thermostat reaches the desired temperature, the entire system shuts off until the next cycle.
While everyone has a different tolerance to cold, ideal winter heat settings should generally be at or above 63 °F (17 °C). Excessive cold (anything below 62 °F or 16 °C) in your home can actually raise your blood pressure as your blood “thickens” in the chilly temperatures.
It's better to leave interior doors open when heating your home. Open doors allow warm air to circulate evenly, preventing hot and cold spots and reducing the strain on your HVAC system. Closed doors can block airflow, making your system work harder and increasing energy costs.
Humidity Levels
Humidity plays an important role in how warm or cold your home feels. Low humidity levels, common in winter, can make the air feel colder and drier, even when your home is adequately heated. Dry air absorbs moisture from your skin, which increases the sensation of being cold.
Heating and cooling (HVAC systems)
Heating and air conditioning are the largest sources of residential electricity use in most climates. According to the U.S. Energy Information Administration, space heating and cooling together account for more than 50% of a home's annual energy consumption.
The Top Energy-Draining Appliance: Space Heating & Cooling
This includes both forced-air systems, heat pumps, furnaces, baseboards, window A/C units, and fans. Because they run for long periods and often at high wattage, they dominate the consumption profile.
When a cold snap hovers around or below 32 degrees Fahrenheit for a couple days in a row it's time to let at least one faucet drip. Pay close attention to water pipes that are in attics, garages, basements or crawl spaces because temperatures in these unheated interior spaces usually mimic outdoor temperatures.
While we know that water freezes at 32 degrees Fahrenheit, keep in mind that indoor pipes are somewhat protected from the extreme outdoor weather. Without a heat source, pipes may take as little as 3 hours to freeze at 20 degrees Fahrenheit or lower.
As temps drop, the risk of having frozen pipes in your home increases. Typical high-risk areas for freezing include pipes within exterior walls, as well as exposed pipes that run through unheated or uninsulated areas such as attics or basements.