20 Best Window Companies in Rancho Santa Margarita, CA (2025 Reviews)

Are you looking to upgrade your windows? Our list of the best window installation companies can help you choose the right one for you.

We analyzed all the top-rated window companies in Rancho Santa Margarita and selected the best 20 based on:

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

By EcoWatch Local Advisors

Updated January 24, 2025

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.

Although renewable energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house’s energy efficiency can also have a considerable impact on home energy conservation. If your house has outdated, drafty windows, your HVAC system could be working overtime to heat or cool your house. This means spending more on energy bills.

Installing efficient windows on your property can help you save money each month on your electricity bills — and you can help the environment, too.

As windows are so important for your home, choosing the best company for you is a big choice to make. That’s why the EcoWatch team has made this list of the best window replacement companies, so you can make an informed decision more easily.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in Rancho Santa Margarita

The EcoWatch Reviews team evaluated dozens of providers that service the Rancho Santa Margarita area to find the top window installation companies by our standards. The companies in this article passed our review standards for energy-efficient offerings as well as price, local expertise, customer service and beyond.

Window World logo
Best Affordability

Window World

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

Window World provides windows expertise in Rancho Santa Margarita. Window World has been in the window business for about 27 years.

It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

There are a wide range of window types that Window World offers, some of which are Energy Star products. 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 Rancho Santa Margarita?

Prices are not available on Window World’s website because the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. The best way to know for sure is to ask for a free quote from the company.

Milgard Windows & Doors logo
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
  • Pros icon Limited additional services

Milgard Windows & Doors provides the best local installation in Rancho Santa Margarita. Milgard has been in the window business for about 60 years.

It has established itself as 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 range of window types that Milgard Windows & Doors offers, 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 Rancho Santa Margarita?

Prices are not available on Milgard’s website because the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. The best way to know for sure is to ask for a free quote from the company.

Renewal by Andersen logo
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen provides the best availability in Rancho Santa Margarita. Andersen has been in the window business for about 27 years.

It has established itself as a company 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

There are a wide range of window types that Renewal by Andersen offers, some of which are Energy Star products. 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 Rancho Santa Margarita?

Prices are not available on Andersen’s website because the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to ask for a free quote from the company.

We strive to remain unbiased and transparent by describing pros and cons for each provider. Additionally, any partnerships do not influence our reviews.

More Window Companies in Rancho Santa Margarita

Renewal by Andersen of Orange County

Laguna Hills, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: https://www.renewalbyandersen.com/window-company/89-orange-county-ca/about-us
Address: 22982 Alcalde Dr, Laguna Hills, CA 92653
Phone: (949) 265-7600

Mancino Door & Window, Inc.

Laguna Niguel, CA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.mdwdoors.com/
Address: 27801 La Paz Rd # B, Laguna Niguel, CA 92677
Phone: (949) 328-9910

Hometime Windows & Doors

Santa Ana, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://www.hometimewindows.com/
Address: 231 E Dyer Rd Unit J, Santa Ana, CA 92707
Phone: (714) 735-0618

California Window & Solar

Costa Mesa, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Metal Frames
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames

Website: https://www.cgwindow.com/
Address: 2915 Red Hill Ave b104, Costa Mesa, CA 92626
Phone: (714) 434-8650

Andes windows & doors

Norco, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Spanish-speaking
  • Pros icon Price Transparency
  • Pros icon Offers window treatments
  • Pros icon Educational Website
  • Pros icon Online portfolio
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: http://andeswindows.com/
Address: 1665 Third St C, Norco, CA 92860
Phone: (951) 268-6611

Dede Windows and Doors / window replacement

Anaheim, CA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Energy-efficient windows and doors
  • Pros icon American-made vinyl
  • Pros icon Educational website
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Vinyl Frames
  • Service icon Custom Window Designs
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://www.dedewindows.com/
Address: 1196 Osprey Cir, Anaheim, CA 92807
Phone: (714) 468-5998

Harbor Construction

Huntington Beach, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation

Website: http://harborconstruction.com/
Address: 15154 Transistor Ln, Huntington Beach, CA 92649
Phone: (888) 882-2247

Retro Windows and Patio Doors LLC

Fontana, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Family-owned and operated
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Energy-efficient windows and doors
  • Pros icon Good Customer Service
  • Pros icon Lifetime warranty

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Tempered Glass
  • Service icon Energy-Efficient Options

Website: http://www.retrowindowsanddoors.com/
Address: 9590 Catawba Ave, Fontana, CA 92335
Phone: (909) 500-4845

SoCal Window Pros

San Dimas, CA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: https://socalwindowpros.com/
Address: 482 W Arrow Hwy Unit A, San Dimas, CA 91773
Phone: (909) 394-7777

United Builders Windows & Doors

Rancho Cucamonga, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation

Website: https://unitedbuilders.info/
Address: 13238 White Fir Ct, Rancho Cucamonga, CA 91739
Phone: (909) 969-8976

Smart Window Company

Torrance, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Tempered Glass

Website: https://smartwindowcompany.com/
Address: 2291 W 205th St Suite 106-A, Torrance, CA 90501
Phone: (310) 946-3697

360 Windows and Doors

Escondido, CA
5.0
★★★★★
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.360windowsanddoors.com/
Address: 1960 W Mission Rd # 7, Escondido, CA 92029
Phone: (619) 331-5246

Can-Do Windows & Doors

Santa Ana, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Metal Frames
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Fiberglass Frames

Website: https://www.candoremodeling.com/
Address: 1241 E Warner Ave, Santa Ana, CA 92705
Phone: (714) 752-3407

TMC Windows & Doors

Orange, CA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: https://www.tmcenterprises.com/
Address: 1330 N Glassell St J Suite J, Orange, CA 92867
Phone: (714) 515-1226

Energy Core Construction

Anaheim, CA
4.9
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://energycore.net/
Address: 1241 N Lakeview Ave suite h, Anaheim, CA 92807
Phone: (866) 933-2218

Best Windows and Doors OC

Anaheim, CA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Vinyl Frames

Website: https://bestwindowsanddoorssoutherncalifornia.com/
Address: 1550 S Sunkist St Unit K1, Anaheim, CA 92806
Phone: (714) 559-3454

Window King

Huntington Beach, CA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://www.windowkingla.com/
Address: 419 Main St Suite B, Huntington Beach, CA 92648
Phone: (562) 372-0219

Save-On Glass & Screen

Westminster, CA
4.9
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Glass Doors
  • Service icon Window Repair

Website: http://www.save-on-glass.com/
Address: 7793 Westminster Blvd., Westminster, CA 92683
Phone: (714) 893-4275

Ameristar Windows

Riverside, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Glass Showers
  • Service icon Glass Doors

Website: https://www.ameristarwindows.com/
Address: 3453 Chicago Ave, Riverside, CA 92507
Phone: (951) 354-2711

Doheny Builders Supply

Capistrano Beach, CA
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Skylights
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: http://www.dohenysupply.com/
Address: 25789 Las Vegas, Capistrano Beach, CA 92624
Phone: (949) 240-3585
Rancho Santa Margarita Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Rancho Santa Margarita, CA using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Rancho Santa Margarita Saves You Money

Upgrading to energy-efficient windows can help improve the comfort of your home and help you save on electricity bills. Here are more ways switching out your windows could help you:

  • Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes usually have windows that are outdated, leaky or potentially even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
  • Save on energy bills: Since energy-efficient windows lower the amount of energy used to heat or cool your home, they can help you save about $388 annually on your energy bills in Rancho Santa Margarita.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
  • Reduce your carbon footprint: In Rancho Santa Margarita, you can lower your indirect greenhouse gas emissions by about 117 pounds per year after you install energy-efficient windows.

Estimated Cost of Window Replacement in Rancho Santa Margarita

Each window replacement company provides varying services and has different costs based on several factors.

How Much Do New Windows Cost?

Generally, homeowners in Rancho Santa Margarita can expect that most window installations will cost between $250 and $1,200, with the most common installations sitting at about $600. These figures are based on specific characteristics of your installation, like the location of your home, type, number of windows, material, size and more.

Bear in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 a year when you replace single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. These savings vary based on your local climate, energy rates and individual home characteristics.

The cost of your window installation will also vary depending on the type of material you choose for the frames. Wood windows are generally the most expensive, but it depends on whether they are completely 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?

There are generally two types of window installation services: full-frame and pocket installations.

A full-frame installation is a total window replacement. It involves taking out the old window, the windowsill, and the exterior and interior trim. It also involves extra materials, such as insulation and drip edges, which raise the total 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. A pocket installation involves replacing a window within the old frame. This means instead of removing the whole unit and reinstalling it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.

Your window installation company will be able to advise you on the best type for your project. In Rancho Santa Margarita, the decision will mostly depend on how much damage there is currently and how old your existing frames are.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

How We Choose the Best Window Installers in Rancho Santa Margarita

In our search to find the most reliable, eco-friendly window installers in Rancho Santa Margarita, the EcoWatch Reviews team assessed many companies before landing on these. We’ve evaluated the best window installers in Rancho Santa Margarita primarily based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows can cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:

Service Area

Since this is a guide for Rancho Santa Margarita, we gave more points to companies that cover the city. There are certainly other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Rancho Santa Margarita.

Work Quality

When it comes to new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the brand of window you choose. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have nice feedback about their experience with a certain window installation company, you won’t see it featured on EcoWatch.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

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

Years of Experience

Last but not least, we like to see companies that have been in the industry for a while. Window installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.

Rancho Santa Margarita, CA Window Replacement FAQs

What is the typical cost to install windows?

The average cost of installing a single window can range between $450 and $650. There are several factors that affect the cost, including local labor costs, the materials used in designing the windows, styles and sizes of windows, your property’s location, how energy-efficient the windows are and the number of windows.

What kind of window is the best for energy efficiency?

A window’s energy efficiency is affected by a number of factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are typically the most energy-efficient since they are certified by the U.S. Department of Energy.

What do window installation companies do?

Window installers go to your house to remove your old windows and replace them with new ones. Some providers install products distributed by other companies, whereas others install their own windows. The installer will also clean up after the installation.

What time of year should I replace my windows?

While you can install windows any time of year, warmer weather is usually better for installing replacement windows. Additionally, the weather should be dry, since rain can make the installation more difficult.

How long does window installation generally take?

Each window takes around 30 minutes to install depending on the type of window. However, the window installation can be a two-day job — or more — if you have a lot of windows that have to be installed.