20 Best Window Companies in Thousand Oaks, CA (2025 Reviews)

How Installing Energy-Efficient Windows in Thousand Oaks Saves You Money

By upgrading to energy-efficient windows, you can enjoy several benefits, such as:

• Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
• Decrease your carbon footprint: In Thousand Oaks, you can lower your indirect greenhouse gas emissions by about 117 pounds per year after you upgrade to energy-efficient windows.
• Save money on electricity bills: The Department of Energy estimates that heat gained or lost through windows makes up around 25-30% of residential energy use. Upgrading to energy-efficient windows can help lower that number, which helps you save some money on your bills.
• Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, particularly if your home is on the older side.

Estimated Cost of Window Replacement in Thousand Oaks

Let’s take a look at the cost of replacing your windows and the types of services offered by installers.

How Much Do New Windows Cost?

According to our research, the average cost of replacing a single window is about $600. However, window replacement costs can range from $200 to $1,200 a window. But prices differ remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door replacements, which will add extra costs to your project.

It’s important to bear in mind that windows with the best efficiency may cost more initially but can save you hundreds of dollars via returns on your energy bills. Investing in Energy Star certified windows can save Thousand Oaks homeowners $572+ a year when replacing single-pane windows.

We advise requesting free quotes from multiple window installers to find the right windows and the company that works best for you.

What Services do Window Installers Offer?

The first step of a window installation is to clarify whether you need a full-frame or pocket installation.

Full-frame installations are usually recommended when you want to change the style of your windows or your window has significant deterioration. With this service, your installers will replace the entire window, including the trim, frame and sill. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are simpler and won’t carry as large a bill, but you can’t do this type of installment if you have any pre-existing rot or water damage.

If you’re not sure which type of window installation service you should get, your installer should be able to advise you. In general, the choice is influenced by factors like the age and condition of the home, the type of building material, budget and time restrictions.

How We Choose the Best Window Installers in Thousand Oaks

In our search to make your home improvements easier and more eco-friendly in Thousand Oaks, the EcoWatch team assessed many companies before deciding on these. We’ve assessed the best window replacement companies in Thousand Oaks mainly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy Star certified windows can reduce your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve a wide variety of states and cities 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 featured 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

We analyzed patterns in recent customer feedback to determine the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including warranty, professionalism, cost, quality of installation, quality of parts and more.

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 awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

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