20 Best Window Companies in Los Gatos, CA (2025 Reviews)

How Installing Energy-Efficient Windows in Los Gatos Saves You Money

Energy-efficient windows can benefit you in several ways. Here are a few reasons you may want to consider making the switch:

• Save money on power bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of household energy use. Switching to energy-efficient windows can help lower that number, which helps you save some money on your bills.
• Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
• Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, drafty or potentially even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
• Reduce your carbon footprint: You can reduce your carbon footprint by about 12% once you install Energy Star certified windows. In Los Gatos, that’s about 117 pounds per year on average.

Estimated Cost of Window Replacement in Los Gatos

Windows come in varying purposes, styles and shapes, so costs and services will vary considerably based on several factors. Below, we describe the average cost and services that you’ll find from window installation companies.

How Much Do New Windows Cost?

Generally, homeowners in Los Gatos can expect that most window installations will range from $250 to $1,200, with the average cost sitting at about $600. How much it will cost varies based on several factors, including material, the location of your home, type, number of windows, size and more.

With windows, efficiency is the most important factor for many homeowners. Efficient windows may cost more upfront, but by increasing the efficiency of your home — especially if you live in a hot climate — they can give you many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Los Gatos homeowners $562+ each year after replacing single-pane windows.

We advise requesting free quotes from multiple window companies to find the one that works best for your budget.

What Services do Window Installers Offer?

Generally, there are two types of window replacement services you can get: full-frame and pocket installations.

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations involve more time and labor and will increase overall costs. Pocket installations are simpler and won’t carry as large a bill because they involve simply replacing the window within its existing frame. But if the frame has any damage, you may need a full-frame installation instead.

Your window installation company will be able to help you understand what’s best for your needs. In Los Gatos, the decision will mostly be based on how old your windows are and if there’s any damage. Wood can decay if it’s not properly maintained over the years, so it’s a good idea to have a professional examine your frames and window sills.

How We Choose the Best Window Installers in Los Gatos

In our hunt to find the most reliable, eco-friendly window installers in Los Gatos, EcoWatch examined dozens of companies before landing on these. Along with energy efficiency, we evaluated window companies all across the state and assigned rankings based on the following methodology:

Service Area

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

Work Quality

We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer on this list to ensure its technicians 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 online reviews to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across nearly every category, including warranty, quality of parts, professionalism, cost, quality of installation and more.

Cost

This one is a give-and-take: as with other services, cheap window installers may not provide the highest quality service. Still, we want to ensure we’re highlighting companies that provide a wide 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 give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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