Heat the Person, Not the House: Stay Warm With the Thermostat Down

Here's a quiet truth about winter heating bills: your furnace is warming every corner of the house, including the empty guest room, the hallway nobody stands in and the air up by the ceiling. You, meanwhile, are one person on one couch. Heating the whole house to keep that one person comfortable is a lot of effort aimed at the wrong target.

This guide flips it around. You'll warm yourself first, with clothes, blankets, a hot water bottle and a few habits you already know, so you can turn the thermostat down and feel fine about it. Everything in the free method uses stuff you own right now. There's an optional upgrade box further down for anyone who wants extra cozy, but you don't need it.

Why it's worth doing

The money case is simple. The U.S. Department of Energy says turning your thermostat back 7–10°F for 8 hours a day can save up to about 10% a year on heating and cooling. Those 8 hours are easy to find: the time you're asleep, or the time you're at work or school. You don't have to be cold all day to see a difference on the bill.

The comfort case is better than you'd expect. A slightly cooler house with a well-dressed person inside can feel every bit as pleasant as a warm house where you're padding around in a T-shirt. And the green part comes along for free: less fuel burned or electricity used, with no sacrifice beyond putting on socks.

The free way, step by step

Step 1: Dress for the house you actually have

Think about indoor winter clothes the way you'd think about a fall hike. Start with a base layer: long underwear, leggings or a thin long-sleeve shirt. Add a sweater or fleece on top. Then cover the parts that get cold first.

• Feet. Wool socks plus slippers make a big difference, especially on tile, hardwood or a concrete slab. Cold feet make the whole room feel cold.
• Head and neck. A knit hat indoors looks a little silly and works anyway. A scarf or a hoodie with the hood up does a similar job.
• Hands. Fingerless gloves let you type, scroll and stir a pot while keeping your fingers from going stiff.

Several thin layers beat one thick sweater because you can peel one off when you're cooking or cleaning and put it back on when you sit down. Wool and fleece keep insulating even when you're a little damp. Cotton loses much of its warmth once it gets damp, so save it for the outer layer rather than the one against your skin.

Step 2: Build a warm nest where you sit

You probably spend most of your evening in one or two spots. Make those spots warm instead of the whole house. Keep a throw blanket on the couch and another by your desk chair. Wrap it around your legs and feet, not just your lap. A folded blanket or towel under you also helps if the seat itself feels cold.

At night, bring out the heavier bedding when the heat goes down. Flannel sheets, a down or wool comforter, or simply one more blanket on top lets you drop the thermostat further while you sleep. Sleep is the easiest time of day to run the house cooler, because you're already under the covers.

Step 3: Use a hot water bottle

The hot water bottle is an old-fashioned tool that still earns its spot. Fill it with hot water, but not boiling water, and follow the maker's instructions for how full to fill it and how to let the extra air out before you cap it. Put it in a fabric cover or wrap it in a towel so it isn't sitting directly against your skin.

Slip it between the sheets a few minutes before bed to take the chill off, then move it down by your feet. On the couch, hold it in your lap under a blanket. It stays warm for a good while and costs next to nothing to refill from the kettle.

Check it at the start of every winter. Rubber breaks down with age, so replace any bottle that's cracked, brittle, sticky or simply old.

Step 4: Warm up from the inside

A mug of tea, coffee, cocoa, broth or plain hot water warms your hands while you drink it and takes the edge off a chilly evening. Soup for dinner and oatmeal for breakfast help too. None of these replaces layers, but they stack nicely on top of them, and they're a pleasant excuse to slow down.

Step 5: Move around

Sitting still for hours is the fastest way to get chilly. Get up every so often. Walk around, do a few squats, vacuum a room, fold laundry, cook something. A few minutes of movement warms you up and gets a chore done at the same time. If you work from home, a short loop around the house between calls helps more than you'd think.

Step 6: Close doors to the room you're in

Warm air spreads out to fill whatever space it's given. Close the door of the room you're using, and the warmth from your body, your lamp, your laptop and your mug stays with you instead of drifting down the hallway. Keep doors to empty rooms closed too, so cold air from those rooms doesn't sneak into yours. If one door lets in a stream of cold air along the floor, roll up a towel and lay it across the gap.

Step 7: Turn the thermostat down at night and when you're out

Now that you're warm, the thermostat can do less. Lower it before bed and when the house is empty, then bring it back up when you're home and awake. That's the setback the Department of Energy is talking about. If your thermostat can't be programmed, stick a note next to it or set a phone reminder until the habit sticks.

Go gradually. Drop a couple of degrees, live with it for a week, then try another. You'll find the point where you're comfortable in layers without feeling like you're camping indoors.

Mistakes that make it harder than it needs to be

• Dropping the temperature all at once. A big overnight change feels like punishment, and punishment doesn't last. Small steps stick.
• Dressing for summer indoors. A T-shirt and bare feet in January means the furnace has to do all the work. Socks first, thermostat second.
• Swapping the furnace for a space heater in every room. Portable space heaters commonly draw up to 1,500 watts. One used in the room you're in can make sense; several running around the house can eat into what you saved. If you use one, plug it straight into a wall outlet (not an extension cord or power strip), keep it clear of bedding, curtains and furniture, and never leave it running unattended or while you sleep.
• Ignoring the bed. Good bedding plus a hot water bottle makes the bed the warmest spot in the house, which lets you turn the heat well down overnight with the least effort.
• Treating it as all or nothing. You don't have to become someone who keeps the house chilly all winter. Even a few degrees lower during sleep hours counts.

Making it work for your household

Renters: If heat is included in your rent, you won't see the savings yourself, but the layering and nesting steps still keep you comfortable if the building runs cool. If you pay your own heating bill, the thermostat you control is all you need to start.

Families: Everybody runs at a different temperature. Give each person their own throw, keep slippers by the door, and let the coldest person in the house claim the sunniest seat. For babies, follow your pediatrician's safe-sleep guidance, which means no loose blankets in the crib.

Older adults and anyone with health concerns: Some people shouldn't keep their homes very cool. If that's you or someone you live with, ask a doctor about a safe indoor temperature, and lean on the layering and nesting steps rather than big thermostat setbacks.

Home-office workers: You're the person most likely to crank the heat during the day, because you're sitting still in an otherwise empty house. Heat the office, not the whole place: close the office door, dress warm, keep a blanket on your chair and let the rest of the house run cooler.

When the upgrade is worth it (and when it isn't)

A heated throw or mattress pad makes sense if you sit still for long stretches, like working at a desk, reading or watching TV, or if you run cold no matter how many layers you wear. It's also a smart swap if you've been leaning on a space heater. Heated blankets and pads use a small fraction of the electricity a space heater can draw, because they warm you directly instead of the air in the room.

Skip it if your blankets and hot water bottle already keep you comfortable. It's one more thing to plug in and one more thing to store. Buying used is fine for plenty of household items, but for anything electric that touches your body, check the cord, controller and fabric carefully, and pass on anything frayed, scorched or missing its controller.

The bottom line

You don't need a new furnace, new windows or a fancy gadget to cut your heating bill. You need socks, a blanket, a mug and the nerve to nudge the thermostat down a couple of degrees. Start tonight: put on a warm layer, fill a hot water bottle, and lower the heat before bed.

When you're ready to go further, our guides to programmable thermostats and a DIY home energy audit will help you find the next easy win. And if your house never quite feels like the number on the wall, read why your thermostat might be lying to you.