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Seven signs it’s time for a window replacement in Lethbridge

Aug 12, 2026 | 6:02 AM

As the seasons change throughout the year, you might notice warning signs that you need window replacement services: frost, condensation, or drafty air coming into your living space.

How do you know if these signs are normal or if they are an indication of window failure? Here in southern Alberta, we have a unique climate with temperature swings and changing weather conditions, which is why quality window replacement is essential to keep your home warm and comfortable.

In this article, we will take a closer look at the clearest signs you need to replace your windows. Our Window Mart showroom in Lethbridge is a great place to visit if you have questions about windows, doors, and energy efficiency.

Is frost or condensation on your windows normal?

No. If you notice condensation or frost on windows, take a closer look to see where it is located. Surface condensation is often normal when a cold front moves through, and it might indicate a humidity or ventilation issue.

On the other hand, if condensation on windows occurs between double or triple-paned glass, it is likely an indication that the seal has failed. When there is moisture between glass panes, it is not normal and can’t be fixed.

When should I replace my windows?

Here are some of the most common reasons why you might need window replacement. When you notice any of these issues, the best thing you can do is contact our expert Window Mart Lethbridge team for an inspection and personalized recommendations. We offer window replacement services for homes and businesses throughout Lethbridge and the surrounding area.


(Image Credit: Window Mart Windows and Doors)

* Moisture or Fog Between the Panes: Any signs of trapped moisture, such as condensation or fog between double or triple-pane glass, are a big red flag. Typically, moisture between the panes is a seal failure and requires window replacement.

* Frost on Windows: It’s not unusual to have frost on the outside of the windows, but you should call our expert team if you notice that frost is often forming on the inside of the glass.

* Rising Heating Costs: Even though utility prices keep going up, you might have a window problem if you have noticed much higher heating bills without any other changes or explanations. Check your utility bills and call our team to see how window replacement can help with energy efficiency.

* Drafts in Your Home: Feel around the window frames and sashes to see if there are any drafts coming into your living space. These drafts are often red flags that you need window replacement.

* Windows are Difficult to Open/Close: You shouldn’t have to struggle every time you open, close, or lock the windows. If it’s hard to open the windows on a sunny day or you find it difficult to close the windows after airing out your home, then our team needs to inspect them to see why they are sticking. If it is not possible to fix them, then it is time for replacement.

* Visible Damage on the Frames: Anytime there is visible damage to the frames, such as warping, cracking, or rotting materials, it’s likely that you need to schedule a window replacement.

* Outside Noises: Have you found that the outdoor noises seem to be more noticeable? If the sounds from outside are coming into your living space, then it could be an issue with failing seals or insufficient glazing.

Just because you are noticing some of these issues, it doesn’t necessarily mean that your windows need to be replaced. The best thing you can do is schedule a consultation with our team for personalized recommendations.

How wind and weather affect a window’s lifespan

Did you know that southern Alberta is considered one of the windiest places in the country? In Lethbridge, strong winds can really take a toll on window quality, since they protect the home and everyone inside from the outside weather – from +40 in the Summer to -40 (or colder) in the Winter, stress can occur on various parts of the window, including seals, weatherstripping, and frames.

Even if your windows are less than 20 years old, it’s still a good idea to schedule an inspection to see if you need your windows to be replaced.


(Image Credit: Window Mart Windows and Doors)

FAQ:

How much does replacement cost with Window Mart?

The pricing of your replacement depends on many factors, including the style of windows, type of glass, and whether you are simply retrofitting or doing a full-frame replacement. Since every project is unique, we invite you to schedule a no-obligation consultation to get a replace cost breakdown for your project.

Does it make sense to install triple-pane glass in Lethbridge?

Yes. Even though these windows cost a bit more upfront, they are worth the extra expense. They offer an additional layer of insulation, which helps with energy efficiency and steadier indoor temperatures.

Can condensation between panes be repaired?

No. If you have trapped condensation between the panes, then it means that the seal has failed and repairs are not sufficient. It’s time for window replacement.

How long do replacement windows typically last?

Most windows are rated with a lifespan of 20 – 25 years, but the wind and freeze-thaw cycles on your home can wear down the seals and hardware more quickly. Our team offers a 25-year warranty on the window replacement services.

Call the Window Replacement Experts in Lethbridge

If you need more information about window replacement, then our team at Window Mart Lethbridge is here to assist. Visit our showroom at 1502 2nd Avenue South or call our office at (587) 388-0898 to book a free window inspection and consultation.