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

How Installing Energy-Efficient Windows in Lancaster Saves You Money

There are quite a few perks of switching to energy-efficient windows. Some reasons you may want to consider making the change are the following:

• Decrease your carbon footprint: By using less energy after you switch to Energy Star certified windows, you’ll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.
• Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, especially if your home is on the older side.
• Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.
• Save money on energy bills: Switching to energy-efficient windows reduces your energy bills by about 12% since you need less energy.

Estimated Cost of Window Replacement in Lancaster

Windows come in varying shapes, purposes and styles, so costs and services will differ greatly depending on your project. Below, we detail the typical cost and services that you’ll find from window installers.

How Much Do New Windows Cost?

Generally, homeowners in Lancaster can anticipate that most replacement window installations will range from $250 to $1,200, with the average cost sitting at about $600. This is because the cost of window installations depend on a variety of factors specific to your home, such as the size, material and number of windows you need to replace, as well as where your property is located.

It’s important to note that windows with the best efficiency may cost more initially but can save you hundreds of dollars by lowering your energy bills. Investing in Energy Star certified windows can save Lancaster homeowners $509+ a year when replacing single-pane windows.

The cost of your window installation will also vary based on the kind of window material you choose for the frames. Wood windows are usually the most expensive, although 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 thing to ask yourself when getting new windows is: Should you get a full-frame installation or a pocket installation?

Full-frame installations entail replacing the total window, including the sill, trim and frame. You most likely need a full-frame installation when you want a new style or your window has considerable rot or deterioration. Because these installations are more involved, they will increase overall costs. A pocket installation entails installing a new window without replacing the frame. This means instead of taking out the whole window and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.

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

How We Choose the Best Window Installers in Lancaster

In our search to find the most reliable, eco-friendly window installers in Lancaster, EcoWatch chose the above companies as the top window installation companies in the city. We have decided to evaluate the top window replacement companies in Lancaster mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows have been shown to cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:

Service Area

Because this is a guide for Lancaster, we only included companies that cover the city. There are certainly reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Lancaster.

Work Quality

We’re certain that you’re looking for professionals who do a great job installing windows. We’ve vetted each company included in our guide 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

Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have nice feedback 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 are not going to provide the most quality service. Still, 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, windows are a sizable investment, so you’ll want to make sure that investment is well protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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