The Premier Replacement Window Installation Company to Call in Fremont, CA

When the windows of your Fremont, California, home are looking worse for wear, failing to offer much in the way of energy efficiency, or otherwise falling short of the standards you have for them, replacements may be in order. The good news is that you don’t have to look far for a replacement window installation team you can trust, as you have Custom Exteriors to turn to. We proudly offer first-rate windows, exceptional installation work, and five-star customer care, and we’d love for you to experience all of that firsthand.

Get Only the Best When We’re Your Partner for a Replacement Window Installation

Part of what has made Custom Exteriors such a widely respected replacement window installation team in the San Francisco Bay Area is the fact that we install top-tier products from some of the industry’s most renowned names. These replacement windows have high marks in terms of visual appeal, energy efficiency, durability, and security, so whether you choose Infinity from Marvin or Anlin windows for your project, you can expect to be happy with the results.

What’s more, we offer these windows in a wide array of popular styles. What this does is allow us to meet a wide range of aesthetic preferences and functional needs. So, whatever look you’re envisioning for your Fremont home, we’ll have you covered.

Fremont Residents Count On Us for Expert Replacement Window Installations

While the Infinity from Marvin and Anlin replacement windows we install are second to none, they still need to be properly installed for you to get the level of beauty and performance you’re looking for. Of course, you won’t have to worry about the prospect of poor installation work when you turn to the Custom Exteriors team, as our replacement window installation services are completed with the utmost care and attention to detail.

Replacement Window Installation FAQs

How long does it take to install replacement windows?

Most standard replacement window installations take about 30 to 60 minutes per window. A full-house project can typically be completed in one to two days, depending on the number of windows and accessibility. Weather, window type, and the condition of the existing frames can also affect the timeline. Professional installers like Custom Exteriors aim to minimize disruption while maintaining quality workmanship.

Will replacement windows improve my home’s energy efficiency?

Yes, replacement windows can significantly improve energy efficiency by reducing drafts and heat loss. Modern windows often feature double or triple-pane glass, low-E coatings, and insulated frames that help regulate indoor temperatures. This can lead to lower heating and cooling costs throughout the year. For the best results, choose Energy Star–rated windows tailored to your climate zone.

Do I need to replace my windows all at once?

No, you don’t have to replace all your windows at the same time. Many homeowners choose to prioritize certain areas, such as the most drafty or damaged windows, and spread the project out over time. However, replacing multiple windows at once can offer better energy savings and aesthetic consistency. We can help you create a phased plan that fits your budget and needs.

What happens to my old windows after installation?

Most window replacement companies will remove and dispose of your old windows as part of the service. Some materials, like glass or aluminum, may be recycled depending on local regulations. If you'd like to keep your old windows for repurposing or resale, let us know in advance.

Turn to the Pros Today

If you’re ready to upgrade your Fremont, CA, home with a first-class replacement window installation from proven experts, get in touch with Custom Exteriors today.

Convenient Financing Options

We install top-quality products at competitive prices and provide financing options to make your exterior remodel convenient, with approved credit.
Five-Star Reviews

Read Our Testimonials

"Loved working with Custom Exteriors. Very responsive to inquiries. Precise in their measurements, estimate and timeframe for completion. Highly recommend them."

Brian I.

Tampa, FL

"Custom Exteriors provided a great product and good service in replacing 2 sliding glass doors and 2 other windows in my townhouse.  One was a custom window that required extra work in refitting the plantation shutters to the new window.  Although there were some bumps along the way, Jeff and his foreman Ryan excelled at follow up.  I would recommend Custom Exteriors."

Carole N.

Tampa, FL

"Custom Exteriors did a wonderful job. The installation crew were neat and thorough. My salesman Mark kept me informed about delivery and the windows are beautiful, quiet and warm house.  I’m very pleased."

Susan G.

Tampa, FL

"Kevin one of the owners of Custom Exteriors contacted me the following day and immediately tried to make things right. The first thing, I was impressed about was he took my call without hesitation. Many medium sized business will bounce me around to different people before finally being able to talk to the owner. He was an attentive listener and took to the time understand my needs and wants in an exterior entry door.His communication was top notch, sending me estimates the same day or the following day. He gave me choices in fiberglass doors: ProVia and Therma-Tru, hardware: Trilennium vs Emtek, and single point vs multiple point locks. I just ordered a ProVia doors through Kevin. This surprised both to my husband and me. Before contacting Custom Exteriors, we thought we were going to get a Therma-Tru door, but that totally changed once we the information we needed from Kevin. I get the sense that he truly wants to give customers options and information, but respects the customer's final decision. There is not high pressure sale pitch. Kevin wants customers to be informed and happy with the end product."

Hellen K.

Tampa, FL