29 Best Window Replacement Companies in St Helena, CA (Jan 2023)
Window Companies Near Me
Thinking about replacing your windows? We've got all the information you need in this guide to the top window installation companies.
We analyzed all the top window installers in St Helena and selected the top 29 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated January 12, 2023
Why you can trust EcoWatch
A review of the top window installation companies in St Helena may not seem like the most compelling article on the EcoWatch site, but trust us, windows impact your life more than you might realize. According to the Department of Energy, heat gained or lost through traditional, outdated windows could account for 25-30% of heating and cooling use.
That's not great for your wallet or the environment, but one of the top window installation companies can help you with that.
Unlike other sites, EcoWatch ranks window companies on energy efficiency while also balancing cost, customer satisfaction and service area.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Overall
Renewal by Andersen
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- More expensive than competition
Best Affordability
Window World
- Large serice area
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best Window Replacement Companies in St Helena
The EcoWatch team evaluated many window installation companies in St Helena to find the top ones for our readers. The providers we've reviewed in this article scored best in our categories, including energy-efficient offerings, availability, customer service, price and more.

Milgard Windows & Doors
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EnergyStar Partner
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Wide network of installers
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Lifetime warranty available
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Entails hiring third-party contractors
Milgard Windows & Doors offers the best local installation in St Helena. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has been in the window installation business for about 60 years. Its reputation is backed by hundreds of positive reviews on customer review websites.
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 WindowsMilgard Windows & Doors carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 St Helena?Pricing information is not available on Milgard's website, as the cost of window replacement 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. If you'd like more accurate information, you can inquire about a quote on the company's website.

Renewal by Andersen
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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More expensive than competition
Renewal by Andersen offers the best availability in St Helena. Andersen has around 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia. The provider has many positive reviews from customers online.
You may want to consider going with 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 WindowsRenewal by Andersen's commitment to sustainability can be seen in its energy-efficient window offerings. 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 St Helena?Though pricing is not 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 information is to request a free quote from the company.

Window World
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Large serice area
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EnergyStar Partner
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Great industry reputation
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Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation industry, and it has become one of the best companies in St Helena. The provider has plenty of positive reviews from customers on online review websites.
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 WindowsWindow World 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. 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 St Helena?Prices are not available on Window World's website since the cost of window installment differs based 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. For more detailed information on pricing, you can get a quote from the company.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct has the best warranty in St Helena. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This window installation company has been operating since 2002 and currently services 27 states nationwide.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThere are a wide variety of window types available from Universal Windows Direct, 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 St Helena?Although pricing information is not 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. You can ask for a free quote on its website for more information about pricing.
We have tried to stay unbiased and transparent by mentioning pros and cons for each installer. Additionally, any partnerships do not affect our rankings.
More Window Replacement Companies in St Helena
The Glass Guru
Fairfield, CA-
Good Customer Service
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Dependable Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Glass Showers
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Tempered Glass
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Double-Hung
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Sliding Glass
Window Replacement Vallejo
Vallejo, CA-
Helps Educate Customers
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No-Hassle Pricing
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Excellent Customer Service
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Free Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Vacaville
Vacaville, CA-
Consistent Workmanship
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Educational Website
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Reliable Appointment Windows
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Northwest Exteriors
Santa Rosa, CA-
Helps Educate Customers
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Excellent Customer Service
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Free Quotes
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Price Transparency
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
Save Energy Company
Petaluma, CA-
Price Transparency
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Reliable Service
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Arrives on Time
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Helps Educate Customers
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Affordable Windows Vacaville
Vacaville, CA-
Excellent Customer Service
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Helps Educate Customers
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Price Transparency
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Reliable Service
Services Offered
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Fast Delivery
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
California Glass of Vallejo, Inc.
Vallejo, CA-
Price Transparency
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Good Customer Service
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Reliable Service
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Custom Window Designs
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Full-Service Installations
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Commercial Windows
Vallejo Glass Inc.
Vallejo, CA-
No-fee Quotes
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Good Customer Service
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Educational Website
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Residential Windows
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Business Windows
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Aluminum Window Frames
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Glass Showers
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Energy-Efficient Options
R & S Glazing Specialties
American Canyon, CA-
Good Customer Service
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Reliable Service
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Educational Website
Services Offered
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Residential Windows
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Glass Showers
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Heavy Glass
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Fast Delivery
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Sliding Glass
Novato Glass Inc
Novato, CA-
Educational Website
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No-Hassle Pricing
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Excellent Customer Service
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Free Quotes
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
ClimatePro
Rohnert Park, CA-
Helps Educate Customers
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Consistent Workmanship
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Price Transparency
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Timely Service
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
The Window Cleaning Specialists, LLC
Santa Rosa, CA-
Price Transparency
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Dependable Service
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Excellent Customer Service
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Reliable Appointment Windows
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
Dotto Glass Inc
San Rafael, CA-
Price Transparency
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Reliable Appointment Windows
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Helps Educate Customers
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Good Customer Service
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
Jack Smith Glass & Sash Inc.
Santa Rosa, CA-
Good Customer Service
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No-Hassle Pricing
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No-fee Quotes
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Dependable Service
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Sliding Glass
All Window & Door
Petaluma, CA-
Free Quotes
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Excellent Customer Service
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Helps Educate Customers
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Price Transparency
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Sliding Glass
Roofing | Windows | Landscaping | Concrete Grinding | Eagle Construction
Vallejo, CA-
Helps Educate Customers
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No-Hassle Pricing
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Dependable Service
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No-fee Quotes
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Sliding Glass
Tom's Glass Co.
Vacaville, CA-
Good Customer Service
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Helps Educate Customers
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Reliable Service
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No-Hassle Pricing
Services Offered
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Custom Windows
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Residential Windows
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Double-Hung
Home Services at The Home Depot
Vacaville, CA-
Educational Website
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Excellent Customer Service
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Free Quotes
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No-Hassle Pricing
Services Offered
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Custom Windows
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Fast Delivery
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Glass Showers
See Through Glass and Door
Petaluma, CA-
No-fee Quotes
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Helps Educate Customers
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Price Transparency
Services Offered
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Residential Windows
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Glass Showers
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Heavy Glass
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Custom Windows
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Business Windows
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Sliding Glass
Glass Shop of the North Bay
Petaluma, CA-
Good Customer Service
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Educational Website
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No-Hassle Pricing
Services Offered
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Doors
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Full-Service Installations
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Custom Windows
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Tempered Glass
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Residential Windows
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Business Windows
American Window Systems, Inc.
Napa, CA-
No-Hassle Pricing
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Helps Educate Customers
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Good Customer Service
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Free Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
Santa Rosa Windows & Glass
Santa Rosa, CA-
Excellent Customer Service
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Helps Educate Customers
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Price Transparency
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Free Quotes
Services Offered
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Custom Windows
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Glass Showers
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Energy-Efficient Options
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Sliding Glass
Decor Shower Door & Glass Co
Napa, CA-
No-fee Quotes
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Educational Website
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No-Hassle Pricing
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Excellent Customer Service
Services Offered
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Custom Windows
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Sliding Glass
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Business Windows
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Double-Hung
Denton's Glass Co.
Santa Rosa, CA-
No-fee Quotes
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No-Hassle Pricing
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Good Customer Service
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Educational Website
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
Golden West Glass Company, Inc
Sonoma, CA-
Price Transparency
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Helps Educate Customers
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Excellent Customer Service
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Free Quotes
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
Capitol Glass Company Inc
Benicia, CA-
Award-Winning
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Excellent Customer Service
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Price Transparency
Services Offered
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Glass Showers
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Residential Windows
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Custom Windows
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Business Windows
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Sliding Glass
B & L Glass
Santa Rosa, CA-
No-Hassle Pricing
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Educational Website
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Good Customer Service
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
Dee Jay's Sash & Glass, Inc.
Santa Rosa, CA-
Excellent Customer Service
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No-fee Quotes
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No-Hassle Pricing
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Commercial Windows
LC Window Treatments
CA 95476, CA-
Good Customer Service
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No-fee Quotes
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Custom Window Designs
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Business Windows
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Sliding Glass
How Installing Energy-Efficient Windows in St Helena Saves You Money
When you upgrade to energy-efficient windows, you may see several perks, such as:
- Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help increase the value of your home if you decide to sell.
- 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 money on energy bills: Because energy-efficient windows reduce the amount of energy needed to heat or cool your home, they can help you save around $655 annually on your energy bills in St Helena.
Estimated Cost of Window Replacement in St Helena
Windows come in varying styles, purposes and shapes, so costs and services will vary tremendously depending on several factors. Below, we go over the average cost and services that you'll find from window replacement companies.
How Much Do New Windows Cost?
Even though the typical of replacing one window is about $600, it can range from $200 to $1,200. But costs vary considerably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door replacements, which will make your project cost more.
It's important to note that windows with higher efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in Energy Star certified windows can save St Helena homeowners $655+ a year when replacing single-pane windows.
The cost of your window installation will also vary based on the type of window material you choose for the frames. Wood windows are generally the most expensive, though it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
In regard to window installations, in general there are two kinds that your installer will have: full-frame and pocket installations.
Full-frame installations involve replacing the whole window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has significant deterioration. Full-frame installations involve more time and labor and will increase overall costs. A pocket installation entails replacing a window without replacing the frame. This means instead of tearing out the whole unit and reinstalling it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.
If you're still trying to decide which kind of installation you should get, you can talk to your provider and get their advice. The decision mostly depends on how old the frames are and if there's any damage present.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Overall
Renewal by Andersen
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- More expensive than competition
Best Affordability
Window World
- Large serice area
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
How We Choose the Best Window Installers in St Helena
In our hunt to find the most reliable, eco-friendly window installers in St Helena, the EcoWatch team chose the above companies as the best window installation companies in the city. We've decided to assess the best window installers in St Helena mostly based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy-efficient windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
Because this is a guide for St Helena, we gave more points to companies that serve the city. There are certainly reputable providers that didn't make the list because they wouldn't be able to serve homeowners in St Helena.
Work Quality
When installing new windows, the quality and variety of services often plays just as important of a role in insulation and performance as the brand you opt for. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the highest rates of customer satisfaction. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including professionalism, quality of installation, quality of parts, warranty, cost and more.
Cost
This one is a give-and-take: similar to other services, cheap window companies are not going to provide the most quality service. On the other hand, we want to ensure we're highlighting companies that provide a 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 protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to St Helena's climate, homeowners need to be wary of water damage, low efficiency and rot. We factored in local experience to reflect the ability of St Helena window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
St Helena, CA Window Replacement FAQs
How much does a window install cost?
The typical cost to install a window ranges between $450 and $650. There are a variety of factors that affect the cost, such as the number of windows, styles and sizes of windows, the materials used in designing the windows, how energy-efficient the windows are, your property's location and local labor costs.
What are the kinds of windows?
There are various kinds of windows you can get for your house, such as bay windows, transom windows, double-hung and single-hung windows, picture windows, awning windows, slider windows and casement windows.
Can I install my own windows?
While it is possible to install your own windows, doing so requires a lot of time and experience with home improvement projects. Hiring a professional can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.
When is the best time of year to replace windows?
Though you can install windows any time of year, warmer weather is generally better for installing replacement windows. Additionally, the weather should be dry, since rain can make the installation more difficult.
Should I replace all my windows at once?
If you're upgrading your windows to save on your energy bills, replacing all the windows at once is the only way to see a noticeable difference. On the other hand, if you have just one or two windows that are broken or drafty, you can replace just those.