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

When you need to replace your windows, our list of the best window installation companies can help you find the provider for you.

We analyzed all the top-rated window companies in Lennox 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 environmentally friendly energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home’s efficiency can also have a large impact on home energy conservation. According to the Department of Energy, heat or cool air lost through outdated, drafty windows could represent 25-30% of heating and cooling costs.

That’s bad for your bank account and the environment, but one of the best window installation companies can help you with that.

So if you’re constructing a new home, renovating or replacing your windows in Lennox, this is the best place to get started.

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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 Lennox

The EcoWatch Reviews team assessed several window installation companies across Lennox to narrow our list down to the top ones. The providers we’ve reviewed in this article scored best in our categories, which include energy-efficient offerings, availability, price, customer service and more.

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 Lennox. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows business, and it has become one of the most respected companies in Lennox.

Window World may be the company for you if you want one 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

Window World is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.

How much does Window World cost in Lennox?

Prices aren’t available 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 pricing information, you can receive a quote on the company’s website.

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 Lennox. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has 60 years of experience in the windows business, and it has become one of the most respected companies in Lennox.

Milgard may be the company for you if you want one 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

Milgard Windows & Doors is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Milgard representative when inquiring about services.

How much does Milgard Windows & Doors cost in Lennox?

Prices aren’t available on Milgard’s website, but it offers different kinds of windows at varying price points. If you’d like more accurate pricing information, you can receive a quote on the company’s website.

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 Lennox. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the windows business, and it has become one of the most respected companies in Lennox.

Andersen may be the company for you if you want one 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 is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Lennox?

Prices aren’t available on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like more accurate pricing information, you can receive a quote on the company’s website.

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

More Window Companies in Lennox

Renewal by Andersen of Los Angeles

Torrance, CA
4.7
★★★★★
  • Pros icon Free assessment
  • Pros icon Financing options available
  • Pros icon 31,000+ projects completed
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon In-home or virtual consultations
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.renewalbyandersen.com/window-company/088-los-angeles-ca/about-us
Address: 18700 Crenshaw Blvd, Torrance, CA 90504
Phone: (310) 214-2222

Discount Window And Door

Redondo Beach, CA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

Website: https://discountwd.com/
Address: 2202 Artesia Blvd, Redondo Beach, CA 90278
Phone: (424) 610-9098

Smart Window Company

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

Services Offered

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

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

Concierge Home Remodeling

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

Services Offered

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

Website: https://conciergehomeremodeling.com/
Address: 19562 Ventura Blvd #226, Tarzana, CA 91356
Phone: (213) 466-1344

Harbor Construction

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

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Glass Doors
  • 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

Dede Windows and Doors / window replacement

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

Services Offered

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

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

Hometime Windows & Doors

Glendora, 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 Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://www.hometimewindows.com/
Address: 859 E Rte 66 Suite A, Glendora, CA 91740
Phone: (626) 618-8557

SoCal Window Pros

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

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

California Window & Solar

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

Services Offered

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

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

Golden Age Builders

West Hollywood, CA
4.9
★★★★★
  • Pros icon In-home consultations
  • Pros icon Good Customer Service
  • Pros icon Unique window options
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon 3D design and planning tool
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: https://newgoldenagebuilders.com/
Address: 8265 Sunset Blvd # 205, West Hollywood, CA 90046
Phone: (310) 750-4551

CGH Solutions - California Green Home Solutions

Van Nuys, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

Website: https://cghsolutions.com/
Address: 7020 Hayvenhurst Ave suite b, Van Nuys, CA 91406
Phone: (562) 644-5530

Save-On Glass & Screen

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

Services Offered

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

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

Window King

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

Services Offered

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

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

Best Windows and Doors OC

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

Services Offered

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

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

TMC Windows & Doors

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

Services Offered

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

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 Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

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

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

Mancino Door & Window, Inc.

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

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.mdwdoors.com/
Address: 605 E Rte 66, Glendora, CA 91740
Phone: (626) 334-2525

Can-Do Windows & Doors

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

Services Offered

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

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

American Vision Windows

Simi Valley, CA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

Website: https://www.americanvisionwindows.com/locations/los-angeles-ventura-county/
Address: 2125 Madera Rd, Simi Valley, CA 93065
Phone: (805) 864-5452

Home Upgrade Specialist Inc

Los Angeles, CA
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Financing options available
  • Pros icon Wide range of services
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Energy-efficient products

Services Offered

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

Website: https://homeupgradespecialist.com/
Address: 8727 W 3rd St #204, Los Angeles, CA 90048
Phone: (844) 516-2426
Lennox Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Lennox, 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 Lennox Saves You Money

Switching to energy-efficient windows can improve the comfort of your home and help you save on power bills. Here are more ways upgrading your windows could benefit you:

  • Protect your investment: The older your home is, the more likely it is that switching to energy-efficient 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 increase the value of your home if you decide to sell.
  • Reduce your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Lennox, that’s about 117 pounds per year on average.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
  • Save on electricity bills: Since energy-efficient windows decrease the amount of energy needed to heat or cool your home, the switch can help you save about $509 annually on your energy bills in Lennox.

Estimated Cost of Window Replacement in Lennox

Each window replacement company provides varying services and has different price points depending on several factors.

How Much Do New Windows Cost?

Though the national average cost of replacing one window is around $600, it can range anywhere from $200 to $1,200. How much it will cost varies based on several factors, such as type, size, number of windows, the location of your home, material and more.

It’s important to keep in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Lennox homeowners $509+ a year when replacing single-pane windows.

Requesting free quotes from multiple installers is the best way to find out which one is right for you.

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 are necessary when you want a new style or your window has a lot of rot. With this service, your installers will replace the total window, including the trim, sill and frame. A pocket installation entails replacing a window without replacing the frame. So, instead of taking out the whole window and rebuilding it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.

Your window installation company should be able to help you decide which type of installation you should get.

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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 Lennox

In our hunt to find the most reliable, eco-friendly window installers in Lennox, the EcoWatch Reviews team chose the above companies as the best window installation companies in the city. Along with energy efficiency, we reviewed several window installers in Lennox and assigned rankings using the following methodology:

Service Area

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

Work Quality

When selecting new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the brand of window you choose. We do give window installers higher marks 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 positive feedback about their service from a certain company, it won’t be featured on EcoWatch.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers would like to keep costs as low as 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 hefty 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 installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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

Lennox, CA Window Replacement FAQs

How much should a window install cost?

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

What are the most common kinds of replacement windows?

There are various kinds of windows you can get for your house, such as picture windows, casement windows, bay windows, transom windows, awning windows, double-hung and single-hung windows and slider windows.

Can I install my own windows?

Even though you can install your own windows, doing so requires a lot of time and experience with home improvement projects. Using a window replacement company can help guarantee that the job is done properly and that you can avoid spending the time and effort of doing it yourself.

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. By that point, they are often less efficient, draftier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less time.