Winter has a way of exposing every draft and cold spot in your place. When the bill hits, it can feel like you’re heating the whole neighborhood, not just your living room.
If you rent, it’s even more frustrating. You’re stuck with leaky windows, old radiators, and a landlord who acts allergic to upgrades. Even as a homeowner, big projects like new windows or a furnace may just not be in the budget this year.
You still have options. Small, cheap fixes can make a big difference in how warm your home feels and how high your bill climbs. Here are 15 low-cost projects you can do with basic tools and a free weekend.Seal drafty windows with plastic film
Windows are huge energy leaks. One estimate says heat gain and loss through windows are responsible for about 25%–30% of residential heating and cooling use. If you rent or can’t afford new windows, clear plastic film is your best friend.
You can buy window insulation kits for under $20, or use heavy-duty clear plastic sheeting and double-sided tape. The idea is simple: tape the plastic to the inside trim, pull it tight, then use a hair dryer to shrink it so it seals to the frame. This traps a layer of air, cuts drafts, and reduces condensation.
This fix is fully removable in spring, which keeps most landlords happy. Do the worst windows first, usually big single-pane or old sliding ones. Even one or two sealed windows in the room where you spend the most time can make your place feel less chilly and reduce how often your heat kicks on.
Hang heavy or DIY thermal curtains
Bare glass bleeds heat. Some estimates say around 18% of a home’s heat can be lost through windows in an uninsulated house. Heavier window coverings help keep that warmth inside.
You don’t have to buy fancy thermal drapes. You can hang regular curtains and clip fleece blankets, moving blankets, or even old comforters behind them. Tightly installed insulating shades and cellular blinds have been shown to cut heat loss through windows by up to about 40%, which can translate to roughly 10% heating energy savings.
For renters, tension rods and clip-on rings mean no drilling. Open curtains on sunny winter days to let in free heat, then close everything as soon as the sun moves away or it gets dark. That simple routine traps warmth you already paid for and reduces cold air falling off the glass at night.
Weatherstrip doors and add cheap draft stoppers
If you can feel cold air around your doors, your money is literally slipping under the threshold. Older homes can lose around 15%–20% of their heat through drafts alone.
Stick-on foam weatherstripping is cheap and renter-friendly. You peel and stick it along the sides and top of doors so they close snugly. At the bottom, you can screw in a door sweep if you own, or use a removable draft stopper if you rent. One guide notes that simple caulking and weatherstripping often pay for themselves in energy savings in about a year or less.
No budget at all? Roll up old towels or use a pool noodle stuffed in a fabric sleeve as a “draft snake” at the bottom of doors. Focus on exterior doors and doors that lead to unheated spaces like hallways, garages, or stairwells.
Seal outlets, switch plates, and tiny wall gaps
It sounds wild, but you can often feel cold air coming through outlets and light switches on exterior walls. They’re small gaps, but they add up. Some weatherization programs recommend adding thin foam gaskets behind outlet and switch covers to reduce drafts and create a barrier between warm indoor air and colder wall cavities.
You can buy a pack of these gaskets for just a few dollars. Turn off the power at the breaker if you’re nervous, unscrew the cover plate, pop in the foam, and screw the plate back on. For renters, this is completely reversible and doesn’t change any wiring.
While you’re at it, look for gaps where plumbing pipes or TV cables enter walls. Stuff those spaces with removable materials like foam backer rod or even pieces of old yoga mat. The goal isn’t making it airtight forever; it’s just cutting the steady trickle of cold air that keeps your heat running.
Cover bare floors with rugs and runners
Heat doesn’t only leave through windows and roofs. Uninsulated floors can account for roughly 10%–20% of heat loss in a room. If you have thin vinyl, tile, or hardwood, you feel that every time you step out of bed.
Rugs add a simple layer of insulation. They trap a little air and cut down on cold air that pools near the floor. You don’t need designer pieces; thrifted area rugs, carpet remnants, or secondhand runners in hallways and under couches will help.
Focus on “paths” where you stand or walk the most, by the bed, sofa, kitchen sink, and hallway. In apartments, rugs also dampen sound, which is a nice bonus. Pair them with slippers and warm socks, and you can keep the thermostat a bit lower without feeling like you’re in a meat locker.
Flip ceiling fans to winter mode
Warm air rises, so a lot of your heat hangs out near the ceiling while your toes freeze. The fix is almost free: reverse your ceiling fan. Many fans have a tiny switch on the motor housing. In winter, you want the blades turning clockwise on low to gently push warm air down the walls and back into the room.
Used this way, a fan doesn’t actually heat the air, but it evens out the temperature, so the room feels warmer. One government-backed guide notes that using ceiling fans correctly can let you raise the thermostat setting by about 4°F without losing comfort.
If you rent, you’re not changing wiring, just flipping a switch. Set a reminder on your phone for the first cold week each fall so you don’t forget. And if a fan is wobbly or making noise, let your landlord know before running it nonstop.
Move furniture away from radiators and vents
If your couch or bed is blocking a radiator or wall vent, you’re heating the back of your furniture instead of the room. Some home energy guides point out that simply unblocking vents and using simple deflectors can help room temperatures stay more even and reduce wasted heat.
Walk through your place and check every heater, vent, and baseboard. Make sure air can flow freely for at least a couple of feet in front of it. Even shifting a couch six inches forward can help. If you can’t move big pieces, vent deflectors can push warm air out from under furniture and into the room.
For steam or hot-water radiators, ask your landlord if they’ll bleed them at the start of each season so trapped air doesn’t kill efficiency. If that’s not happening, you can still improve comfort by putting a reflective panel or even heavy-duty aluminum foil on cardboard behind radiators on exterior walls to bounce more heat into the room, as long as it doesn’t touch hot pipes.
Change furnace filters and vacuum vents
When filters clog up with dust, your system has to work harder to pull air through. One major efficiency program suggests checking your filter monthly and changing it at least every three months; a dirty filter slows airflow and wastes energy.
If you rent a single-family home or townhouse, ask who’s responsible for filters. Even if the landlord should technically handle it, you might decide it’s worth $10 and five minutes of your time to swap one yourself and keep your bill down. Just match the size printed on the old filter.
While you’re at it, vacuum dust off floor vents, baseboards, and return grilles. In apartments with shared systems, you can’t control the main furnace, but you can still keep registers clean and unblocked. Cleaner airflow means warmer rooms and less strain on equipment, that's good for your wallet and for avoiding mid-winter breakdowns.
Turn the water heater down to 120°F
Hot water is a quiet energy hog. Some estimates say water heating uses close to a fifth of a typical home’s energy. Many heaters are set at 140°F by default, which is hotter than most people need.
Dropping the temperature to about 120°F is generally recommended for most households and can cut water heating energy costs by roughly 6%–10%. If you own, you can usually adjust a dial on the tank. If you rent, you can ask your landlord to lower it; frame it as both a safety and cost issue.
After turning it down, wait a few hours, then test your hot water at a tap with a kitchen thermometer. You want it close to 120°F, not scalding. This small tweak helps your tank lose less heat while water is just sitting there, reduces energy use, and can lengthen the life of the heater.
Insulate exposed hot-water pipes and the tank
If you can see bare hot-water pipes in a basement, utility closet, or under a mobile home, they’re shedding heat you paid for. Wrapping pipes and the water heater with proper insulation is a classic low-cost project that one government-backed guide says can pay for itself within a few years.
Foam pipe sleeves are cheap and easy to cut with scissors. You just snap them over the pipe and tape the joints. For the tank, use a pre-cut insulation blanket rated for your type of heater, and follow safety directions, especially around gas controls and burner access.
Renters need to be more careful here; you’ll want written permission from your landlord before changing anything around gas appliances. If you can’t touch the tank, ask if they’ll handle it. At minimum, insulating any accessible hot-water pipes in your unit can help water stay hotter on its way to your shower, which means you use less.
Close doors and “zone” your heat
Heating every square foot of your place all day is expensive, especially if you’re mostly in one or two rooms. Many energy-saving guides recommend focusing heat where you are and keeping doors closed to unused spaces to keep warm air where you need it most.
If you have central heat, try keeping spare bedrooms, storage rooms, or little-used spaces cooler. Close the door, and if allowed, partially close the vent in that room, but don’t close too many vents or you can stress the system. For baseboard or radiator setups, you may be able to turn down heat in those rooms if each unit has its own valve.
In apartments where you don’t control the main system, you can still use doors like thermal barriers. Keep the warmest room sealed up in the evening and hang a heavy curtain over open archways if needed. That way you’re not paying to heat stairwells or unused corners.
Block drafts from unused fireplaces and chimneys
An unused fireplace is basically a giant hole in your insulation. Warm indoor air rises up and out, pulling cold air in from every crack. Some budget-friendly guides recommend chimney balloons or even carefully stuffed pillows or newspapers to seal unused chimneys and stop warm air escaping, always with the warning to remove them before any fire use.
If you own, you can install a proper chimney balloon or top-sealing damper. If you rent and the fireplace is decorative or permanently unused, ask your landlord if you can seal it with a removable solution: a fitted piece of foam board, a DIY insert, or a draft stopper designed for fireplaces.
Whatever you use needs to be removable and clearly marked so nobody accidentally starts a fire with something stuffed in the flue. But once that chimney is sealed, you’ll often feel the room get less drafty almost immediately.
Remove or seal window AC units
If your window AC is still in place in January, it’s like leaving a small window cracked open all winter. Air leaks around the unit and through the metal body itself. Some weatherization guides suggest pulling units out at the end of the season or tightly sealing them with covers and insulation if they must stay in.
If you can remove the unit, fill the gap with the original window glass or panel, then use plastic film and curtains as usual. If it has to stay, buy or DIY an insulated cover for the outside and seal around the frame with foam or removable caulk that you can peel off in spring.
Renters should avoid any permanent sealant that could damage the window frame. Stick to removable foam tape and plastic. Even cutting drafts around one leaky AC unit can make a big difference in a small apartment.
Make DIY draft snakes for windows and baseboards
Not every leak needs hardware. You can roll up old towels, blankets, or even sleeves stuffed with rice or kitty litter and use them as draft “snakes” along window sills and baseboards. This is especially useful in older rentals where you can feel cold air pouring in along the bottom of the wall but can’t do much permanent work.
Focus on the worst offenders: the bottoms of old sash windows, sliding doors, or spots where the wall meets the floor on exterior walls. Combine these with plastic film or heavier curtains for a double layer of protection.
Because these are fully removable and don’t stick to anything, they’re perfect if your landlord is strict or you’re in a short-term lease. They’re also easy to move, tuck them against a door at night and move them to another room during the day as needed.
Add moisture to the air so it feels warmer
Dry winter air makes your home feel cooler at the same temperature because your skin loses moisture faster. Adding a bit of humidity can make 68°F feel more comfortable, which can help you keep the thermostat lower. Some home energy guides mention using humidifiers to improve comfort and reduce the temptation to crank the heat.
If a humidifier isn’t in the budget, you can get a similar effect by air-drying laundry on racks, placing open containers of water near heat sources, or simmering a pot of water with a lid slightly off while you cook. Just don’t leave any stove unattended.
Aim for moderate humidity, not tropical. Too much moisture can cause condensation on windows and mold problems. But a little added humidity can help you feel warmer at a lower setting and ease dry skin and scratchy throats at the same time.
Use your thermostat like a money tool
How you use your thermostat matters as much as where you set it. You can save up to about 10% a year on heating and cooling by turning the thermostat back 7°–10°F for around eight hours a day, typically while you’re sleeping or out of the house.
If you have a programmable or smart thermostat, set a simple winter schedule: warmer in the morning and evening when you’re home and awake, cooler overnight and when you’re gone. If you rent and only have a basic dial, you can still build the habit of turning it down a notch when you leave or go to bed.
Layer up with sweaters and warm socks so you’re not tempted to bump it higher. Combined with all the draft-stopping tricks above, a small daily setback can quietly shave real money off your winter bills without making your home miserable.
You don’t have to do all 15 of these at once. Start with whatever draft or cold spot is bothering you most. Each small fix makes your place a little cozier and your bill a little less painful and they add up fast, especially over a long winter.
