20 Best Window Companies in San Carlos, CA (2025 Reviews)

How Installing Energy-Efficient Windows in San Carlos Saves You Money

Energy-efficient windows can offer benefits in more than one way. Here are some reasons you may want to take the plunge and make the switch:

• Save on energy bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of household energy use. Switching to energy-efficient models can help lower how much you have to pay, therefore saving you about 12% more on your bills.
• Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can make your home more comfortable and also help increase the value of your home if you decide to sell.
• Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
• Reduce your carbon footprint: Reducing how much energy you use also lowers your carbon emissions. You could reduce it by 117 pounds per year on average.

Estimated Cost of Window Replacement in San Carlos

Each window installation company provides varying services and has different prices based on several factors.

How Much Do New Windows Cost?

On average, San Carlos homeowners can expect their window replacements to range from $250 to $1,200. The average cost is at approximately $600. This is because window installations are based on a variety of factors specific to your home, including the size, material and number of windows you need to install, as well as the location of your property.

With windows, efficiency is the most important factor for most homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — particularly during the summer and winter — they can provide decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save San Carlos homeowners $440+ per year after replacing single-pane windows.

How much your window installation costs will also vary based on the type of material you choose for the frames. Wood windows are usually the most expensive, though it depends on whether they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.

What Services do Window Installers Offer?

The first step when planning a window installation is to clarify whether you want 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 professionals will replace the full window, including the frame, sill and trim. A pocket installation entails replacing a window within the existing frame, which is generally less expensive than a full-frame installation.

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

How We Choose the Best Window Installers in San Carlos

In our search to find the most reliable, eco-friendly window installers in San Carlos, EcoWatch chose the above companies as the top window installation companies in the city. Along with energy efficiency, we reviewed window companies all across the state and ranked them based on the following methodology:

Service Area

Because this is a guide for San Carlos, we paid more attention to companies that provide services to the city. There are other reputable providers that didn’t make the list because of the low odds that they would serve the average homeowner in San Carlos.

Work Quality

We’re willing to bet that you’re looking for a company to do a great job installing windows. We’ve vetted each installer included on this list to make sure its technicians are well-qualified and that the company has received plenty of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent online reviews to determine the companies with the most consistent customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across nearly every category, including cost, professionalism, warranty, quality of parts, quality of installation and more.

Cost

This one is a give-and-take: similar to other services, cheap window installers are not going to provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed previously, windows are a significant investment, so you’ll want to make sure that investment is well protected. Window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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