20 Best Window Companies in Sammamish, WA (2025 Reviews)

How Installing Energy-Efficient Windows in Sammamish Saves You Money

There are quite a few benefits of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch are the following:

• Reduce your carbon footprint: Decreasing how much energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 271 pounds per year on average.
• Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
• Save money on power bills: The Department of Energy estimates that heat gained or lost via windows makes up about 25-30% of energy use in your home. Installing energy-efficient windows can help decrease that number, which helps you save more on your bills.
• Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, especially if you have an older home.

Estimated Cost of Window Replacement in Sammamish

Let’s go over the cost of installing new windows and the types of services you may need for your home.

How Much Do New Windows Cost?

On average, homeowners in Sammamish can anticipate that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at around $600. These estimates vary depending on specific characteristics of your installation, like material, type, the location of your home, number of windows, size and more.

With windows, efficiency is one of the most important factors for most homeowners. Efficient windows may cost more off the bat, but by increasing the efficiency of your home — especially during the winter — they can give you many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Sammamish homeowners $366+ per year after replacing single-pane windows.

We recommend requesting free quotes from multiple window companies to find the one that works best for you.

What Services do Window Installers Offer?

In general, there are two types of window installation services companies provide: full-frame and pocket installations.

Full-frame installations involve replacing the total window, including the trim, frame and sill. Full-frame installations are necessary when you want to change the style of your windows or your window has noticeable rot. Because these installations are more involved, they will increase overall costs. Pocket installations (or retrofits) entail installing a new window within the existing frame, which makes pocket installations take less time and therefore cost less. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.

If you’re not sure which window installation service you need, your installer should be able to assist you. Generally, the decision depends on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

How We Choose the Best Window Installers in Sammamish

In our search to find the most reliable, eco-friendly window installers in Sammamish, the EcoWatch team chose the above companies as the best window installation companies in the city. Along with energy efficiency, we analyzed window companies all across the state and assigned rankings using the following methodology:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve the Sammamish area so you can find the best window installation company near you.

Work Quality

We’re willing to bet that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer in our guide to make sure its contractors are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another super important review factor. If most customers don’t have good 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 other services, cheap window installation companies may not provide the most 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

Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Because of Sammamish’s climate, homeowners will want to mitigate low efficiency, rot and water damage. We factored in local experience to reflect the ability of Sammamish window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.