20 Best Window Companies in Pasadena, CA (2025 Reviews)

How Installing Energy-Efficient Windows in Pasadena Saves You Money

When you upgrade to energy-efficient windows, you may see a few perks, including:

• Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, particularly if your home is on the older side.
• Save money on power bills: Switching to energy-efficient windows lowers your energy bills by about 12% because you use less energy.
• Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can cut your carbon footprint by about 12%, according to Energy Star.
• Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.

Estimated Cost of Window Replacement in Pasadena

Windows come in varying purposes, styles and shapes, so costs and services will vary remarkably based on several factors. Below, we detail the typical cost and services that you can get from window installers.

How Much Do New Windows Cost?

According to our research, the national average cost of installing a single window is around $600. However, window installation costs can range from $200 to $1,200 for each 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 installers also offer door replacements, which have a higher price tag.

It’s also worth noting that energy-efficient windows will cost more initially, but Energy Star predicts that upgrading the windows on your Pasadena home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by upgrading to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

Requesting free quotes from several companies is the best way to find out which one will work best for your budget.

What Services do Window Installers Offer?

When considering window replacements, in general there are two types that your installer will have: full-frame and pocket installations.

Full-frame installations involve replacing the complete window, including the frame, trim and sill. Full-frame installations are necessary when you want a new style or your window has significant deterioration. These installations are more involved and will increase the overall cost. Pocket installations (or retrofits) entail replacing a window within the existing frame, which makes pocket installations take less time and therefore cost less. But, if the frame has any damage or rot, you should opt for a full-frame installation instead.

Your window installer can help you figure out which type of installation you need.

How We Choose the Best Window Installers in Pasadena

In our hunt to make your home improvements easier and more eco-friendly in Pasadena, 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 ranked them using the following methodology:

Service Area

Because this is a guide for Pasadena, we gave more points to companies that serve the city. There are certainly reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Pasadena.

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 included in our guide to ensure its contractors are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another very important review factor. If most customers don’t have nice things to say about their experience with a certain installer, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: similar to other services, cheap window installers may not provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that provide 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 labor rank higher with EcoWatch.

Years of Experience

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