How to Keep Your House Warm in Winter

February 13, 2026

Replacement Window Parts | Wooden Window Replacement

Cold house in winter? Discover how to keep your house warm in winter and how window sash replacement offers a long-term fix.

There are many possible reasons if your house is cold in winter, from issues with your HVAC system to drafty windows. Checking your thermostat, air filter, and HVAC system are the first places most people check, but what if there are no problems with them? You should check your windows! Windows get worn down over time and drafts can be sneaky.

Here are some tips on how to keep your house warm in winter by keeping the cold air out and the warm air in.

Check Your Heating System

The first place to check to see if you are wondering how to keep your house warm in winter is your heating system. Check to make sure the air filter is clean, the vents are open and not blocked, and if you had regular maintenance over the years. These problems are often minor and not difficult to fix, but depending on what’s wrong, you will need a professional.

Drafty Doors

Doorways can easily let cold air in through drafts. The easiest fix for drafty doors is a door draft stopper. They are often covered with fabric and weighed down to fit against the bottom of the door and effectively keep the cold air out when the door is closed. These won’t stop cold air from coming in when the door is open, so make sure your door is closed as often as possible. You could make one yourself if you love DIY projects with fabric sewn into a tube the length of your door and putting your choice of stuffing in it. Unfortunately, doors aren’t the only place cold air can seep in to your warm home.

Drafty Windows

Drafty windows are a common cause for cold homes in the winter. Like windows, there are draft stoppers for windows that can help prevent drafts. You can also insulate your windows with plastic film, bubble wrap, or thick curtains. However, these are all short-term solutions for drafty windows. The key to how to keep your house warm in winter is an effective, long-term solution: window repair or replacement. Old windows could also be making your energy bill higher all year. Once windows are old or worn enough, window repair or replacement is the only reliable solution.

Window Repair and Replacement

The best long-term solution for how to keep your house warm in winter is to make sure your windows are working perfectly. This might require window repair or replacement. Thankfully, most of the problems with windows is with the window sash (the part of the window that moves and holds the glass panes in place). You don’t have to replace the whole window. Oftentimes replacing the window sash is easier, cheaper, and able to be done without professional installation! Window repair will eliminate drafts while making your windows beautiful again.