11 Best Window Companies in San Luis Obispo, CA (2024 Reviews)

If you’re thinking about upgrading to new windows, our guide to the best window installation companies can help.

We analyzed all the top-rated window companies in San Luis Obispo and selected the best 11 based on:

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

By EcoWatch Local Advisors

Updated February 01, 2024

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 eco-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. Poor windows can make your home uncomfortable in the summer or winter.

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

Efficient windows are especially important in San Luis Obispo, where summers are long and hot. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $521 a year.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
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 Window Installation & Replacement Companies in San Luis Obispo

The EcoWatch Reviews team researched dozens of installers that serve the San Luis Obispo area to find the top window installation companies by our standards. The providers in this article scored best in our review categories, which include energy-efficient offerings, price, availability, local expertise, customer service and more.

Window World logo
FAST QUOTE
as little as 30 seconds
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 has windows expertise in San Luis Obispo. 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 windows industry, and it currently provides services to 200 locations nationwide.

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

There are a wide variety 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 San Luis Obispo?

Although pricing is not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to ask for a free quote from the company.

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
  • Pros icon Limited additional services

Milgard Windows & Doors has the best local installation in San Luis Obispo. 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 windows industry, and it currently provides services to Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties.

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

There are a wide variety 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 San Luis Obispo?

Although pricing is not readily available on Milgard’s website, it offers different kinds of windows at varying price points. The best way to get more accurate pricing information is to ask for a free quote from the company.

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 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 has the best availability in San Luis Obispo. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia.

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

There are a wide variety 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 San Luis Obispo?

Although pricing is not readily available on Andersen’s website, 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 get more accurate pricing information is to ask for a free quote from the company.

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 has the best warranty in San Luis Obispo. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of experience in the windows industry, and it currently provides services to 27 states nationwide.

Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

There are a wide variety of window types that Universal Windows Direct offers, some of which are Energy Star products. 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 San Luis Obispo?

Although pricing is not readily available on Universal’s website, 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. The best way to get more accurate pricing information is to ask for a free quote from the company.

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

More Window Companies in San Luis Obispo

Arroyo Grande Glass & Mirror

Arroyo Grande, CA
4.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Skylights
  • Service icon Mirrors
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Custom Glass
  • Service icon Custom Window Designs
  • Service icon Glass Doors

Website: https://www.arroyograndeglass.com/
Address: 1012 E Grand Ave, Arroyo Grande, CA 93420
Phone: (805) 489-6900

Los Osos Glass & Window Inc

Baywood-Los Osos, CA
3.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

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

Website: http://www.losososglass.com/
Address: 2118 9th St, Baywood-Los Osos, CA 93402
Phone: (805) 528-0109

Central Coast Screens

San Luis Obispo, CA
3.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Screen Repair
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows

Website: https://centralcoastscreens.com/
Address: 1106 Atascadero St, San Luis Obispo, CA 93405
Phone: (805) 704-6608

Contractors Glass Company

San Luis Obispo, CA
2.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

Website: http://www.contractorsglassco.com/
Address: 60 Prado Rd, San Luis Obispo, CA 93401
Phone: (805) 543-0871

Artisan Windows and Doors

San Luis Obispo, CA
2.8
★★★★★
  • Pros icon Price Transparency

Services Offered

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

Website: http://www.artisanwd.com/
Address: 179 Granada Dr #4, San Luis Obispo, CA 93401
Phone: (805) 852-7001

Monarch Window

San Luis Obispo, CA
2.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Metal Frames
  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Skylights
  • Service icon Glass Doors

Website: http://www.monarchwindow.com/
Address: 201 Bridge St, San Luis Obispo, CA 93401
Phone: (805) 242-2059

Artistic Glass

Atascadero, CA
3.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

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

Website: https://www.artisticshowerdoorca.com/
Address: 8408 El Camino Real, Atascadero, CA 93422
Phone: (805) 400-9241

Templeton Glass

Paso Robles, CA
4.5
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: http://www.templetonglass.com/
Address: 3850 Ramada Dr Suite B2, Paso Robles, CA 93446
Phone: (805) 434-3438

Construction Windows, LLC

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

Services Offered

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

Website: https://constructionwindows.com/
Address: 3200 Riverside Ave #120, Paso Robles, CA 93446
Phone: (800) 995-6059

A-1 Glass, LLC

Paso Robles, CA
4.5
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Mirrors
  • Service icon Metal Frames
  • Service icon Vinyl Frames
  • Service icon Fiberglass Frames
  • Service icon Glass Showers

Website: http://www.a1glasswindows.com/
Address: 705 Paso Robles St, Paso Robles, CA 93446
Phone: (805) 227-6697

Paso Robles Glass

Paso Robles, CA
4.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Tempered Glass
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Metal Frames
  • Service icon Glass Doors

Website: http://pasoroblesglass.com/
Address: 609 22nd St, Paso Robles, CA 93446
Phone: (805) 238-4014
San Luis Obispo Window Cost Calculator

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

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

  • Save money on electricity bills: The Department of Energy estimates that heat gained or lost via windows makes up about 25-30% of energy use in your home. Switching to energy-efficient windows can help decrease that number, which helps you save $521 a year on your bills.
  • Decrease your carbon footprint: By using less energy once upgrading to Energy Star certified windows, you’ll also be reducing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Protect your valuables from fading: When you upgrade to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
  • Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to 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.

Estimated Cost of Window Replacement in San Luis Obispo

Let’s take a look at the cost of window installation and the types of services you may need for your home.

How Much Do New Windows Cost?

On average, homeowners in San Luis Obispo can expect that most window installations will cost between $250 and $1,200, with the average cost at around $600. This is because of the fact that window installations are based on a variety of factors specific to your home, like the size, material and number of windows you need to install, as well as the location of your property.

Whether or not you pick energy-efficient windows is another factor that will influence the cost. These will typically cost more than other windows, but on the other hand, you can save about $521 a year on your energy bills in San Luis Obispo.

We advise getting free quotes from several window installation companies to find the one that works best for your budget.

What Services do Window Installers Offer?

The first step when considering a window replacement is to decide whether you should get a full-frame or pocket installation.

A full-frame installation is a total window replacement. This service involves removing the old window, the sill, and the exterior and interior trim. It can also involve additional 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 around the window after a full-frame installation. Pocket installations (or retrofits) entail replacing a window within its existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any rot or deterioration, you will likely need a full-frame installation instead.

Your window installation company should be able to help you figure out what’s best for your needs. In San Luis Obispo, the decision will mostly depend on the age of your home and if there’s any moisture damage. Wood can decay if it’s not properly maintained over the years, so it’s good to have a professional examine your frames and window sills.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

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

How We Choose the Best Window Installers in San Luis Obispo

In our hunt to find the most reliable, eco-friendly window installers in San Luis Obispo, EcoWatch assessed many companies before settling on these. Along with energy efficiency, we evaluated window companies all across the state and ranked them using the following methodology:

Service Area

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

Work Quality

We’re willing to bet that you’re looking for a company to do a great job installing windows. We’ve vetted each company featured on this list to make sure its technicians are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.

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 installer, 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 providers’ prices, we awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

Protecting your investment in new windows is important. That’s why window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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

San Luis Obispo, CA Window Replacement FAQs

How much should window installation cost?

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

What are the most common types of replacement windows?

There are several different kinds of windows you can get for your home, including awning windows, casement windows, bay windows, transom windows, double-hung and single-hung windows, picture windows and slider windows.

Can I install my own windows?

Although it is possible to install your own windows, doing so is time-consuming and requires a lot of handiness. Using a window replacement company can help ensure that the installation is done properly and that you won’t have to spend the time and effort to do it yourself.

Should I replace my windows all at the same time?

If you’re upgrading your windows because of energy-efficiency, replacing all your windows at once is the only way to gain that benefit. On the other hand, if you have only a few windows that are broken or drafty, you can replace just those.