Tips For Preventing Cold Window Drafts

January 20, 2022

Stopping Window Drafts

Cold windows drafts can be a seriously hassle during winter, making the inside of your home substantially less comfortable, and noticeably raising your heating bills. For a number of reasons, windows can be a major source of heat loss — and so identifying and properly stopping cold air drafts from the window is essential.


Fortunately, there are many user-friendly techniques that can make a palpable difference in terms of blocking cold air coming in around the windows. Read on for some tips on how to take care of cold window drafts.


Add Sealing Around the Window

One of the simplest ways to lessen drafts is to better seal spaces around your windows. There are two particularly effective materials for this: caulk and weatherstripping. Using caulk to fill gaps can block air flow, and prevent cold air from entering around the frame. Adding weatherstripping over areas that appear to be losing heat does much the same. 


While these two methods do not address underlying structural problems, they can provide needed and useful relief from cold air.


Use Spray Foam

Another, slightly more intensive technique involves adding spray foam around the windows. In this method, it is necessary to remove the molding around the frames, and then to add spray foam around the frames. Make sure you use the right type of foam, which should be easy to find at any hardware store. 


This method can get a little closer to the heart of a leak, adding a little more protection from cold air coming in.


Replace Your Windows

A more intensive — but highly effective — method of preventing heat loss around windows is replacing your windows. Many homes have older windows, often with single panes and drafty — and sometimes seriously damaged — frames. While replacement can be costly, upgrading to a double pane window can make a substantial difference in terms of heat retention. It is also worth noting that while the initial expenditure can be high, the amount saved over time in heating costs can quickly make it worth it.


Identify Other Sources of Heat Loss

It is very common to notice drafts around windows, because they offer close contact to the outdoors, and the sensation of cold air can often be quite palpable. But it's important to recognize that other sources of heat loss may actually be contributing to chilliness in the home much more than windows. 


In general, more substantial heat loss generally occurs at the top or bottom of your home — in areas like the foundation or basement, or even more commonly, in the attic or crawl space. Places where ducts, pipes, or other wires exit the home are particular areas where heat loss is common.

In other words, it is a good idea to do a thorough sweep of the home, to identify places where your home might be losing substantial heat. (In some cases, it is useful to bring in a professional to assess heat loss.) Simultaneously, it may be worth checking other aspects of your home heating system, like checking up on your furnace — and if necessary, installing a new one — to ensure your home is as energy-efficient as possible.


Keep Your Home Warm

Keeping your home comfortable is essential for enjoying your personal space, as well as ensuring you are not needlessly wasting money on excess heating. 



For any and all HVAC needs in Sonoma and Marin counties, contact Next Level HVAC. Next Level HVAC has the expertise to ensure that all of your home's HVAC systems are functioning well. 

For more information, or to reach out with any concerns, contact Next Level HVAC online or at 707 228-9921.

Share

More Posts That Might Interest You

Person replacing an air filter in a ceiling vent.
By Next Level HVAC January 30, 2026
Regular HVAC filter changes and tune-ups lower energy bills, extend system life, and prevent expensive repairs. Learn how to keep your system running smoothly.
Vacuum cleaning a dusty floor vent.
By Next Level HVAC January 14, 2026
Poor air quality at home? Learn how dirty HVAC ducts and filters impact your health — and how cleaning them restores clean, breathable air.
Humidifier attached to ductwork with flexible duct, in a basement setting.
By Next Level HVAC December 29, 2025
Combat dry winter air in Sonoma County with a whole-home humidifier for better comfort, health, and energy efficiency.
Carbon monoxide detector with green power light, yellow fault light, red alarm light, and LCD displaying
By Next Level HVAC December 15, 2025
Protect your home from carbon monoxide leaks this winter with furnace maintenance, safety tips, and CO detector use.
Person removing a dirty air filter from a ceiling vent.
By Next Level HVAC November 17, 2025
earn how often to change your HVAC filter and why it’s crucial for energy efficiency, air quality, and system health.
Man fixing a machine next to a window; autumn foliage outside.
By Next Level HVAC November 5, 2025
Get your HVAC system winter-ready. Discover why November is perfect for maintenance and what to check before the cold hits.