20 Best Window Companies in Lake Oswego, OR (2025 Reviews)
Thinking about improving your home’s value? The best window replacement companies can help.
We analyzed all the top-rated window companies in Lake Oswego and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
A guide on the top window replacement companies in Lake Oswego may not seem like the most captivating article on EcoWatch, but trust us, windows impact your life more than you might think. If your windows are outdated or drafty, you could be losing 25-30% of your house’s heat or cool air out of them.
Thankfully, helping you save money with efficient windows also aligns with our goals of conserving energy and the resources it takes to produce it.
We’ve put together a guide on the best installation companies to help you in your search, so you can not only enjoy brand-new windows, but also save money on your energy bills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best Window Installation & Replacement Companies in Lake Oswego
The EcoWatch Reviews team assessed many window providers across Lake Oswego to narrow our list down to the best ones. The providers we’ve reviewed in this article scored best in our categories, which include energy-efficient offerings, availability, customer service, price and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World has windows expertise in Lake Oswego. This provider has 27 years of experience in the windows business, and it has proved to be one of the best companies in Lake Oswego.
It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsThere are a wide variety of window types that Window World offers, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Lake Oswego?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to receive a free quote from the company.

Milgard Windows & Doors
EnergyStar Partner
Wide network of installers
Lifetime warranty available
Entails hiring third-party contractors
Limited additional services
Milgard Windows & Doors has the best local installation in Lake Oswego. This provider has 60 years of experience in the windows business, and it has proved to be one of the best companies in Lake Oswego.
It has established itself as a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsThere are a wide variety of window types that Milgard Windows & Doors offers, some of which are Energy Star products. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.
How much does Milgard Windows & Doors cost in Lake Oswego?Milgard does not outline prices on its website, but it offers different kinds of windows at varying price points. The best way to know for sure is to receive a free quote from the company.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen has the best availability in Lake Oswego. This provider has 27 years of experience in the windows business, and it has proved to be one of the best companies in Lake Oswego.
It has established itself as a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Lake Oswego?Andersen does not outline prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to receive a free quote from the company.
We strive to stay unbiased and transparent by including pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Lake Oswego
Renewal by Andersen
Portland, OREducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Bay Windows
Double-Hung
Champion Replacement Windows of Portland
Portland, ORFree assessment
Good Customer Service
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Bay Windows
Double-Hung
DaBella
Vancouver, WATransferable warranties
Timely Service
Alside® vinyl windows
Free in-person and virtual consultation
Good Customer Service
Services Offered
Double-Hung
Window Replacement/Installation
Vinyl Frames
Glass Doors
LADA Exteriors
Tualatin, ORPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
The Sashwright Co.
Portland, OREducational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Window Repair
Wood Frames
Storm/Impact Windows
Custom Window Designs
Town & Country Glass
Portland, ORPrice Transparency
Good Customer Service
Free assessment
Services Offered
Window Repair
Screen Repair
Mirrors
Glass Doors
Glass Showers
Window Replacement/Installation
HomeTegrity Inc
Salem, ORFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Da-Vinci Painting & Construction, LLC
Lake Oswego, ORPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Lifetime Remodeling Systems
Portland, OREducational Website
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Clear Choice Windows & Doors
Tigard, ORGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Metal Frames
Tualatin Valley Glass
Tigard, OREducational Website
Price Transparency
Services Offered
Glass Repair
Glass Showers
Mirrors
Window Repair
Window Replacement/Installation
Storm/Impact Windows
Screen Repair
Energy-Efficient Options
Tempered Glass
Glass Doors
Custom Glass
Budget Blinds of Beaverton & Lake Oswego
Tualatin, OREducational Website
Free assessment
Good Customer Service
Services Offered
Custom Window Designs
Window Replacement/Installation
Classic Sash & Door Company
Portland, ORGood Customer Service
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
L & M Glass
Oregon City, ORFree assessment
Educational Website
Good Customer Service
Services Offered
Mirrors
Window Replacement/Installation
Glass Showers
RJ Roofing
Portland, ORPrice Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Pacific Exteriors NW
Portland, ORGood Customer Service
Educational Website
Price Transparency
Timely Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Triple Pane Glass
Bridgetown Window & Door, Inc.
Portland, OREducational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Two Brothers Insulating, LLC
Woodland, WAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Wood Frames
The Glass Guru
Albany, ORPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Mirrors
Screen Repair
Glass Repair
Vinyl Frames
Tempered Glass
Metal Frames
Glass Doors
Storm/Impact Windows
Window Repair
Energy-Efficient Options
Custom Glass
Wood Frames
Fiberglass Frames
Triple Pane Glass
Window Replacement/Installation
Skylights
Glass Showers
Lifetime Windows & Doors
Portland, ORFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Lake Oswego, OR using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Lake Oswego Saves You Money
Energy-efficient windows can provide benefits in more than one way. Here are some reasons you may want to make the switch:
- Decrease your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Lake Oswego, that’s about 271 pounds per year on average.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
- Save on energy bills: According to the Department of Energy, heat gained or lost through windows makes up about 25-30% of residential energy use. Switching to energy-efficient models can help lower that amount, therefore saving you about 12% more on your bills.
Estimated Cost of Window Replacement in Lake Oswego
Let’s go over the cost of updating your windows and the types of services you may need for your home.
How Much Do New Windows Cost?
Typically, homeowners in Lake Oswego can expect that most window installations will cost between $250 and $1,200, with the most common installations sitting at about $600. But costs will differ significantly based on the number of windows you need, the quality of your products, the current condition of your home and your location. Many window companies also offer replacement door installations and other add-ons like baths, coating, shutters and more. These extra services will increase overall project costs.
Whether or not you pick energy-efficient windows is another factor that will determine the cost. These will typically cost more than other windows, but on the other hand, you can save about $398 a year on your energy bills in Lake Oswego.
How much your window installation costs will also vary based on the kind of material you choose for the frames. Wood windows are typically the most expensive, but it depends on whether they are completely wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
The first step of an installation is to clarify whether you need a full-frame or pocket installation.
Full-frame installations entail replacing the complete window, including the sill, frame and trim. You most likely need a full-frame installation when you want to change the style of your windows or your window has considerable rot or deterioration. These installations are more involved and will increase the total cost. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are simpler and won’t cost as much, but you can’t do this type of installment if you have any pre-existing rot or water damage.
If you’re hiring a reputable window installation company, your company can recommend the best type for your project. In Lake Oswego, the choice will mostly be influenced by how much damage there is currently and how old your existing frames are.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
How We Choose the Best Window Installers in Lake Oswego
In our hunt to make your home improvements easier and more eco-friendly in Lake Oswego, EcoWatch landed on the above companies as the top window installation companies in the city. We have decided to evaluate the top window installers in Lake Oswego primarily based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows have been shown to reduce your energy 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 Lake Oswego, we gave more points to companies that provide services to the city. There are certainly other reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in Lake Oswego.
Work Quality
When choosing new windows, the quality and breadth of services can often play just as important of a role in overall efficiency and performance as the brand you opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If the majority of customers don’t have nice feedback about their service from a certain company, you won’t see it featured on EcoWatch.
Cost
This one is a give-and-take: as with most services, cheap window companies are not going to provide the highest quality service. On the other hand, we want to ensure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed previously, windows are a serious investment, so you’ll want to be certain that investment is protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for a while. Window installation companies that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Lake Oswego, OR Window Replacement FAQs
How much does window installation cost?
The national average cost of installing a single window is about $600 but can range from $200 to $1,200, depending on a few different factors. The price is generally dependent on the location of your property, the type and material of the window and the size of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What kind of window is the best for energy efficiency?
A window’s energy efficiency depends on several factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient and are certified by the U.S. Department of Energy.
Can you install your own windows?
Even though you can install your own windows, doing so is time-consuming and requires a lot of experience with home improvement projects. Using a window installation company can help ensure that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.
When is it time to replace your windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Other than that, if your windows have any damage on them, or they have become difficult to operate, they may be in need of replacement.
How long does window installation take?
Because the average installation time is 30 minutes per window, about 16 windows can be installed during an 8-hour work day.