20 Best Window Companies in Oswego, IL (2025 Reviews)

How Installing Energy-Efficient Windows in Oswego Saves You Money

By switching to energy-efficient windows, you can benefit in several ways, such as:

• Save on power bills: Because energy-efficient windows decrease the amount of energy used to heat or cool your home, they can help you save about $307 annually on your energy bills in Oswego.
• Decrease your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can lower your carbon footprint by about 12%, according to Energy Star.
• Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent damage from the sun's UV rays to your floors, carpets and furniture.
• Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Upgrading and repairing your windows is an important part of maintaining your property and its value.

Estimated Cost of Window Replacement in Oswego

Windows come in varying shapes, styles and purposes, so costs and services will differ remarkably depending on your project. Below, we describe the typical cost and services that you’ll find from window installers.

How Much Do New Windows Cost?

Generally, Oswego homeowners can expect their replacement window installations to range from $250 to $1,200. The average cost sits at around $600. How much it will cost varies depending on several factors, such as number of windows, the location of your home, size, type, material and more.

It’s important to bear in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Oswego homeowners $307+ a year when replacing single-pane windows.

Getting free quotes from several installers is the best way to find out which one is right for you.

What Services do Window Installers Offer?

When it comes to window replacements, there are typically two kinds that your provider will offer: full-frame and pocket installations.

Full-frame installations are usually done when you want a new style or your window has a lot of rot. With this service, your installers will replace the entire window, including the sill, trim and frame. Pocket installations (or retrofits) entail replacing a window within the existing frame, which makes pocket installations more simple and affordable. But, if the frame has any damage or rot, you should opt for a full-frame installation instead.

Your window installation company should be able to help you choose which type of installation you need.

How We Choose the Best Window Installers in Oswego

EcoWatch differs from most reviewers because we’re examining these companies through a sustainability lens. We have evaluated the best window installers in Oswego mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Since this is a guide for Oswego, we gave more points to companies that provide services to the city. There are certainly other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Oswego.

Work Quality

We’re certain that you’re looking for a company to do a great job installing windows. We’ve vetted each company in our guide to make sure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

Customer Reviews

Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have positive feedback about their service from a certain installer, it won’t be featured on EcoWatch.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

As discussed, windows are a substantial investment, so you’ll want to be certain that investment is protected. Window installation companies that offer lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have a good track record in the industry. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.