29 Best Window Replacement Companies in Discovery Bay, CA (Mar 2023)
Window Companies Near Me

Thinking about improving your home's energy efficiency? The best window replacement companies can help.

We analyzed all the top window installers in Discovery Bay and selected the top 29 based on:

  • Customer reviews
  • Window replacement expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated March 14, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

The EcoWatch team is all about helping Discovery Bay homeowners make their homes more eco-friendly. Damaged or outdated windows can cost you in electric bills. In fact, the Department of Energy estimates that about 30% of your house's heat or cool air could be lost through your windows.

Replacement windows improve your home's insulation, not only making you and your family more comfortable during the summer and winter, but also saving you some money and helping the environment.

We've put together this guide on the top installation companies to help you in your search, so you can not only enjoy brand new windows, but also save money on your electricity bills.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Manufactures products in-house
  • Award-winning company
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • Lifetime warranty
  • Low prices relative to competitors
  • Quality of service will depend on your area

Excellent Reputation

Milgard Windows & Doors

★★★★★
4.5

  • EnergyStar Partner
  • Wide network of installers
  • Lifetime warranty available
  • Entails hiring third-party contractors

Best Window Replacement Companies in Discovery Bay

The EcoWatch Reviews team evaluated dozens of installers in Discovery Bay to find the best window companies for our readers. The providers mentioned in this article scored best in our review categories, which include energy-efficient offerings, customer service, local expertise, price, availability and more.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
  • Pros icon Award-winning company
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation industry. The company has hundreds of positive reviews from customers on online review websites.

You may want to consider choosing Andersen if you're interested in a installer that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Discovery Bay?

Andersen does not outline prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can request a free quote on its website for more information about pricing.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Large serice area
  • Pros icon Lifetime warranty
  • Pros icon Low prices relative to competitors
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Discovery Bay. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window replacement industry.

If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the provider for you.

Energy Efficiency of Window World Windows

Window World appeals to eco-conscious consumers by providing energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Discovery Bay?

Prices aren't mentioned on Window World's website, but it's known for offering some of the most affordable window installations around. If you'd like more accurate information, you can get a quote on the company's website.

Milgard Windows & Doors logo
FAST QUOTE
as little as 30 seconds
Excellent Reputation

Milgard Windows & Doors

★★★★★
BBB Rating: A
Locations: West Coast
Founded: 1962
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Wide network of installers
  • Pros icon Lifetime warranty available
Cons:
  • Pros icon Entails hiring third-party contractors

Milgard Windows & Doors has the best local installation in Discovery Bay. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has around 60 years of experience in the window replacement business. Its reputation is backed by many positive reviews from customers online.

You may want to consider opting for Milgard if you're looking for a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.

Energy Efficiency of Milgard Windows & Doors Windows

There are a wide variety of window types available from Milgard Windows & Doors, some of which are Energy Star products. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.

How much does Milgard Windows & Doors cost in Discovery Bay?

Although prices are not available on Milgard's website, it offers different kinds of windows at varying price points. You can ask for a free quote on its website for more information about pricing.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers the best warranty in Discovery Bay. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window industry for around 20 years. Its reputation is backed by many positive reviews on customer review websites.

If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the perfect company for you.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.

How much does Universal Windows Direct cost in Discovery Bay?

Universal doesn't have any prices listed on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. For more accurate information on the cost, you can inquire about a quote from the company.

One thing to note is that the following companies are national, meaning the quality of customer service may vary depending on your local team. We have tried to remain unbiased and transparent by listing both pros and cons for each company.

More Window Replacement Companies in Discovery Bay

The Glass Guru

Lodi, CA
4.8
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Locally Recognized for Quality
  • Pros icon Timely Service
  • Pros icon Reliable Service

Services Offered

  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/stockton-ca/
Address: 1024 Industrial Way suite g, Lodi, CA 95240
Phone: (209) 340-9114

The Glass Guru

Antioch, CA
4.4
★★★★★
  • Pros icon Award-Winning
  • Pros icon Reliable Service
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/brentwood-ca/
Address: 2220 A St Suite A, Antioch, CA 94509
Phone: (925) 690-1947

Renewal by Andersen of San Francisco

Hayward, CA
4.3
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://www.renewalbyandersen.com/window-company/890-san-francisco-ca/retailer
Address: 30806 Santana St, Hayward, CA 94544
Phone: (510) 803-3110

The Glass Guru

Fairfield, CA
4.3
★★★★★
  • Pros icon Reliable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/fairfield-vacaville-ca/
Address: 1601 Enterprise Dr Unit 14, Fairfield, CA 94533
Phone: (707) 348-9539

Window Replacement San Leandro

San Leandro, CA
4.0
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Consistent Workmanship
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1300 Fairmont Dr, San Leandro, CA 94578
Phone: (510) 722-0016

Best Exteriors

San Leandro, CA
4.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Dependable Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 689 E 14th St, San Leandro, CA 94577
Phone: (510) 961-3697

Window Replacement Dublin

Dublin, CA
4.0
★★★★★
  • Pros icon Dependable Service
  • Pros icon Price Transparency
  • Pros icon Reliable Appointment Windows
  • Pros icon Good Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 4530 Dublin Blvd, Dublin, CA 94568
Phone: (925) 587-4767

Window Replacement Livermore

Livermore, CA
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Arrives on Time

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1374 Railroad Ave, Livermore, CA 94550
Phone: (925) 495-1522

Window Replacement Pleasanton

Pleasanton, CA
4.0
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon No-Hassle Pricing
  • Pros icon No-fee Quotes
  • Pros icon Timely Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: Pleasanton Ave, Pleasanton, CA 94566
Phone: (925) 400-8953

Window Replacement Redwood City

Pleasanton, CA
4.0
★★★★★
  • Pros icon Dependable Service
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 649 Main St, Pleasanton, CA 94566
Phone: (650) 569-1968

Window Replacement Fremont

Fremont, CA
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Reliable Service
  • Pros icon Free Quotes
  • Pros icon Arrives on Time

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 43713 Boscell Rd, Fremont, CA 94538
Phone: (510) 722-0717

Window Replacement Walnut Creek

Walnut Creek, CA
4.0
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 2842 Ygnacio Valley Rd, Walnut Creek, CA 94598
Phone: (925) 464-1334

Window Replacement Concord

Concord, CA
4.0
★★★★★
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon Timely Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1856 Colfax St, Concord, CA 94520
Phone: (925) 466-4343

Window Replacement Union City

Union City, CA
4.0
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 4126 Dyer St, Union City, CA 94587
Phone: (510) 722-0020

Andersen Windows & Doors

Lodi, CA
4.0
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Good Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass

Website: https://www.andersenwindows.com/
Address: 314 N Main St, Lodi, CA 95240
Phone: (209) 463-3667

Window Replacement Hayward

Hayward, CA
4.0
★★★★★
  • Pros icon Reliable Service
  • Pros icon Good Customer Service
  • Pros icon Arrives on Time
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 27531 Tampa Ave, Hayward, CA 94544
Phone: (510) 606-4707

Bestoff Windows & Construction

Concord, CA
4.0
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.bestoffwindows.com/
Address: 1000 Detroit Ave Suite "S, Concord, CA 94518
Phone: (925) 457-9026

Contra Costa Plate & Mirror Co

Pacheco, CA
3.9
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Excellent Customer Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Business Windows
  • Service icon Double-Hung

Website: http://www.ccplateandmirror.com/
Address: 418 N Buchanan Cir #13, Pacheco, CA 94553
Phone: (800) 452-7789

Epic Home Upgrades and Construction

San Leandro, CA
3.9
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Award-Winning
  • Pros icon No-fee Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: http://epichomeupgrades.com/
Address: 303 W Joaquin Ave #103, San Leandro, CA 94577
Phone: (888) 714-3742

R & M Quality Windows & Doors

Newark, CA
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.randmqualitywindowsanddoors.com/
Address: 5588 Central Ave #A, Newark, CA 94560
Phone: (510) 796-0100

Stockton Window Replacement

Stockton, CA
3.8
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://bestexteriors.net/windows/
Address: 1625 W March Ln #200, Stockton, CA 95207
Phone: (916) 386-2621

Lafayette Glass Company

Lafayette, CA
3.8
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass

Website: http://www.lafayetteglasscompany.com/
Address: 3375 Mt Diablo Blvd, Lafayette, CA 94549
Phone: (925) 284-9510

Window Replacement Stockton

Stockton, CA
3.8
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Price Transparency
  • Pros icon Dependable Service
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://bestexteriors.net/
Address: 42 N Sutter St #310F, Stockton, CA 95202
Phone: (916) 399-5707

Danville Glass Company

Danville, CA
3.8
★★★★★
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Reliable Appointment Windows
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass

Website: http://www.danvilleglasscompany.com/
Address: 4115 Blackhawk Plaza Cir #100, Danville, CA 94506
Phone: (925) 277-0555

Landmark Exteriors

Livermore, CA
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Reliable Service
  • Pros icon Arrives on Time

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://landmark-exteriors.com/
Address: 147 A N Livermore Ave, Livermore, CA 94550
Phone: (925) 551-8070

Aames Windows & Doors Inc

Alamo, CA
3.8
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free Quotes

Services Offered

  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://aameswindows.com/
Address: 11 Orchard Ct suite d, Alamo, CA 94507
Phone: (800) 862-1947

Custom Exchange Windows

Pleasanton, CA
3.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon Dependable Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass

Website: http://www.customexchangeinc.com/
Address: 6873 Herrin Ct, Pleasanton, CA 94588
Phone: (855) 225-6999

APW Window Replacement

Pleasanton, CA
3.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Reliable Service
  • Pros icon Free Quotes
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://apwwindows.com/
Address: 3109 Camdon Ct, Pleasanton, CA 94588
Phone: (773) 818-4400

Brentwood Glass Shower and Window Company

Brentwood, CA
3.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Locally Recognized for Quality
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Glass Showers

Website: https://brentwoodglasscompany.com/
Address: 420 Beatrice Ct g2, Brentwood, CA 94513
Phone: (925) 634-9029

How Installing Energy-Efficient Windows in Discovery Bay Saves You Money

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

  • Save money on electricity bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of energy use in your home. Upgrading to energy-efficient windows can help reduce that amount, which helps you save more on your bills.
  • Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, leaky or potentially even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
  • 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.
  • Decrease your carbon footprint: By using less energy once switching to Energy Star certified windows, you'll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.

Estimated Cost of Window Replacement in Discovery Bay

Let's go over the cost of replacing your windows and the types of services offered by installers.

How Much Do New Windows Cost?

According to our market research, the average cost of replacing a single window is around $600. However, window replacement costs can range from $200 to $1,200 per window. But costs will differ considerably depending on the current condition of your home, the quality of your products, the number of windows you need and your location. A lot of window companies also offer door installations and other add-ons like baths, shutters, coating and more. Additional services will increase your overall project costs.

It's important to keep in mind that windows with higher efficiency may cost more initially but can save you hundreds of dollars via returns on your energy bills. Investing in Energy Star certified windows can save Discovery Bay homeowners $579+ a year when replacing single-pane windows.

We advise requesting free quotes from several window installation companies to find the right windows and the company that works best for you.

What Services do Window Installers Offer?

The first question to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?

A full-frame installation is a total window replacement. It involves taking out the old window, the sill, and the exterior and interior trim. It can also involve extra materials, including insulation and drip edges, which raise the overall cost of the project. It's also worth noting that it's not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are on the simpler end and won't carry as large a bill, but you can't do this type of installment if you have any pre-existing rot or water damage.

If you're not sure which type of window installation service you should get, your installer can advise you. Generally, the decision is based on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Manufactures products in-house
  • Award-winning company
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • Lifetime warranty
  • Low prices relative to competitors
  • Quality of service will depend on your area

Excellent Reputation

Milgard Windows & Doors

★★★★★
4.5

  • EnergyStar Partner
  • Wide network of installers
  • Lifetime warranty available
  • Entails hiring third-party contractors

How We Choose the Best Window Installers in Discovery Bay

EcoWatch differs from most reviewers because we examine these companies through a sustainability lens. Along with energy efficiency, we analyzed each installer and ranked them based on the following methodology:

Service Area

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

Work Quality

When picking new windows, the quality and range of services often plays just as important of a role in insulation and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

We analyzed patterns in recent customer feedback to determine 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 reflects the quality of services across most other categories, including warranty, cost, quality of parts, professionalism, quality of installation and more.

Cost

This one is a give-and-take: similar to other services, cheap window companies may not provide the highest quality service. Still, we want to make sure we're highlighting companies that offer a wide range of price and financing options so they're accessible to most homeowners.

Warranty

As discussed, windows are a considerable investment, so you'll want to be certain that investment is well protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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

Discovery Bay, CA Window Replacement FAQs

How much should a window install cost?

The national average cost of installing one window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is usually dependent on the size of the window, the location of your property and the type and material of the window. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.

Which kind of window is the best?

Generally, double-pane windows will be more efficient than single-pane windows and windows that don't open are more efficient than windows that do. If you want to be sure you'll have the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — that means they're certified energy-efficient by the U.S. Department of Energy.

Do you really have to use a window installation company?

You should hire a window installation professional whenever you want to replace your windows. Installing windows is a complicated process that can take a lot of time, so it's best left to the professionals.

What time of year is a good time to replace my windows?

Though you can install windows any time of year, warmer weather is typically better for replacing windows. In addition, it shouldn't be raining, because rain can make the installation more difficult.

Should I replace all my windows at once?

If your windows are greater than 20 years old, you most likely need to replace all of them. At that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.

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