20 Best Window Companies in El Cajon, CA (2023 Reviews)
If you're looking to get new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in El Cajon and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
Whether you're updating for aesthetics or have windows that need repairs, windows play a important role in conserving electricity in your home. When it's the middle of summer, your outdated and leaky windows could be making your home harder to cool and costing you more in power bills.
Replacement windows improve the insulation in your home, not only making you more comfortable during the summer and winter, but also saving you some money and helping the environment.
As windows have such a large impact on your home, selecting the best company for you is a big decision to make. That's why the EcoWatch team has put together this list of the best window installation companies, so you can make an informed decision more easily.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in El Cajon
The EcoWatch Reviews team examined dozens of installers in El Cajon to find the best window replacement companies for our readers. The installers in this article scored best in our review categories, which include energy-efficient offerings, local expertise, price, availability, customer service and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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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 provider has 27 years of experience in the windows business, and it has become one of the most reputable companies in the business. Hundreds of positive reviews from customers online back the company's reputation.
You may want to consider going with Window World if you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsThere are a wide range of window types available from Window World, 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 El Cajon?Pricing details are not available on Window World’s website since 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. You can inquire about a free quote on its website for more information about the cost.

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
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Limited additional services
Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. This provider has 60 years of experience in the windows business, and it has become one of the most reputable companies in the business. Hundreds of positive reviews from customers online back the company's reputation.
You may want to consider going with Milgard if you're looking for a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsThere are a wide range of window types available from Milgard Windows & Doors, some of which are Energy Star products. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.
How much does Milgard Windows & Doors cost in El Cajon?Pricing details are not available on Milgard’s website since 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. You can inquire about a free quote on its website for more information about the cost.

Renewal by Andersen
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Great industry reputation
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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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No lifetime warranty
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the windows business, and it has become one of the most reputable companies in the business. Hundreds of positive reviews from customers online back the company's reputation.
You may want to consider going with Andersen if you're looking for 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 WindowsThere are a wide range of window types available from Renewal by Andersen, 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 El Cajon?Pricing details are not available on Andersen’s website since 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. You can inquire about a free quote on its website for more information about the cost.

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 provides the best warranty in El Cajon. Universal has been in the window industry for about 20 years. The provider has plenty of glowing reviews from customers online.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in El Cajon?Prices aren’t listed on Universal’s website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. You can request a free quote on its website for more information about the cost.
One thing to note is that the following companies are national, meaning the quality of customer service may depend on your local crew. We have tried to remain unbiased and transparent by mentioning both pros and cons for each company.
More Window Companies in El Cajon
Renewal by Andersen of Greater San Diego
San Diego, CA-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
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Energy-Efficient Options
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Window Replacement
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Double-Hung
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Residential Windows
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Fast Delivery
Window World of San Diego
San Marcos, CA-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Window Replacement
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Residential Windows
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Bay Windows
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Custom Window Designs
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Sliding Glass
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Fast Delivery
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Double-Hung
DaBella
San Diego, CA-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Residential Windows
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Glass Showers
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Custom Window Designs
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Window Replacement
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Commercial Windows
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Double-Hung
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Fast Delivery
Glenview Glass & Screen Inc.
El Cajon, CA-
Timely Service
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Tempered Glass
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Glass Showers
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Aluminum Window Frames
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Window Replacement
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Sliding Glass
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Fast Delivery
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Residential Windows
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Custom Window Designs
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Full-Service Installations
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Double-Hung
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Commercial Windows
Window Solutions
Lakeside, CA-
Good Customer Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Sliding Glass
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Stained Glass
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Residential Windows
Coast Design & Build | Home Improvement | General Contractor, Bathroom & Kitchen Remodel San Diego
San Diego, CA-
Free assessment
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Fast Delivery
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Glass Showers
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Residential Windows
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Window Repair
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Custom Window Designs
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Commercial Windows
Pacifica Glass Company
Santee, CA-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Window Repair
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Window Replacement
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Commercial Windows
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Full-Service Installations
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Residential Windows
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Custom Window Designs
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Sliding Glass
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Glass Showers
Clear Concepts Window & Door
San Diego, CA-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Window Replacement
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Double-Hung
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Aluminum Window Frames
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Commercial Windows
Picture Perfect Windows & Doors
San Diego, CA-
Free assessment
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Good Customer Service
Services Offered
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Residential Windows
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Double-Hung
Newman Windows and Doors - San Diego
San Diego, CA-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Bay Windows
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Window Replacement
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
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Residential Windows
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Custom Window Designs
Genesis Home Improvements SD
San Diego, CA-
Free assessment
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Price Transparency
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Timely Service
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Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Sliding Glass
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Aluminum Window Frames
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Residential Windows
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Window Replacement
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Energy-Efficient Options
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Fast Delivery
Action Window and Door
Spring Valley, CA-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Double-Hung
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Window Replacement
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Sliding Glass
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Commercial Windows
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Residential Windows
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Aluminum Window Frames
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Energy-Efficient Options
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Custom Window Designs
Window Tech Inc.
Lakeside, CA-
Good Customer Service
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Free assessment
Services Offered
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Fast Delivery
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Custom Window Designs
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Residential Windows
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Glass Showers
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Window Replacement
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Aluminum Window Frames
Garland-Fields Glass Co
La Mesa, CA-
Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Fast Delivery
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Aluminum Window Frames
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Residential Windows
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Energy-Efficient Options
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Window Replacement
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Custom Window Designs
Sun Coast Remodelers
San Diego, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Window Replacement
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Commercial Windows
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Fast Delivery
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Residential Windows
Home Services at The Home Depot
San Diego, CA-
Educational Website
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Good Customer Service
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Free assessment
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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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Sliding Glass
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Glass Showers
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Stained Glass
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Window Replacement
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Commercial Windows
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Fast Delivery
SLS Home Remodeling
San Diego, CA-
Good Customer Service
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Free assessment
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Timely Service
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Price Transparency
Services Offered
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Custom Window Designs
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Residential Windows
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Window Replacement
All Seasons Windows and Patios Inc.
El Cajon, CA-
Price Transparency
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Educational Website
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Free assessment
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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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Fast Delivery
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Aluminum Window Frames
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Window Replacement
BM Windows
San Diego, CA-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Residential Windows
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Commercial Windows
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Energy-Efficient Options
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Window Replacement
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Fast Delivery
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Custom Window Designs
JWG Windows & Doors Inc.
Poway, CA-
Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Double-Hung
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Window Replacement
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Sliding Glass
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Energy-Efficient Options
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Custom Window Designs
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Commercial Windows
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Residential Windows
Calculate how much you can expect to pay for window installation and replacement in El Cajon, CA using our customized window cost calculator.
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 El Cajon Saves You Money
By switching to energy-efficient windows, you and your family can take advantage of several benefits, including:
- Reduce your carbon footprint: By using less energy after switching to Energy Star certified windows, you'll also be lowering your carbon dioxide 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 potentially even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Better temperature control in your home: Residing in a chilly place like El Cajon often means needing your heater to keep your house cool. Energy-efficient windows can lower how much heat is lost through your windows when heating your home.
Estimated Cost of Window Replacement in El Cajon
Let's go over the cost of updating your windows and the kinds of services you may need for your home.
How Much Do New Windows Cost?
Generally, homeowners in El Cajon can anticipate that most replacement window installations will cost between $250 and $1,200, with the most common installations sitting at about $600. But costs will vary considerably depending on the number of windows you need, your location, the quality of your products and the current condition of your home. A lot of window companies also offer replacement door installations and other add-ons like baths, shutters, coating and more. These extra services will increase your overall project costs.
Keep in mind that energy-efficient windows may have a higher price, but Energy Star predicts the upgrade will save you between $101 and $583 a year when you replace single-pane windows and between $27 and $197 a year when you replace double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.
Costs will also vary depending on the material you pick for your window frames. Aluminum frames have the lowest price. They're sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made from wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They're also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
The first step when considering a window installation is to decide whether you should get a full-frame or pocket installation.
Full-frame installations involve replacing the complete window, including the trim, frame and sill. Full-frame installations are necessary when you want a new style or your window has considerable rot or deterioration. Because full-frame installations are more involved, they will increase overall costs. Pocket installations are on the simpler end and won't carry as large a bill, as they involve simply replacing the window within its existing frame. But if the frame has any damage or deterioration, you should opt for a full-frame installation instead.
Your window installation company will be able to recommend the best type for your project. In El Cajon, the decision will mostly depend on how much damage there is currently and the condition of your existing frames.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in El Cajon
EcoWatch reviews are different from other reviews because we examine these companies through a sustainability lens. We have assessed the top window replacement companies in El Cajon mainly based on energy efficiency, 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 takes the following factors into consideration:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve the El Cajon area so you can find the best window installation company near you.
Work Quality
When installing 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 get. We do rate window installers higher 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 good things to say about their experience with a certain installer, you won't see it featured on EcoWatch.
Cost
This one is a give-and-take: similar to other services, cheap window companies won't always provide the highest quality service. On the other hand, we want to ensure we're highlighting companies that provide a spectrum of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. That's why window installation companies that offer lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installation companies that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.
El Cajon, CA Window Replacement FAQs
How much does window installation cost?
The national average cost to install a window is about $600 but can range from $200 to $1,200, based on several factors. The price is usually dependent on the size of the window, the type and material of the window and the location of your property. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What are the most common types of replacement windows?
There are various types of windows you can get for your home, such as double-hung and single-hung windows, slider windows, awning windows, picture windows, bay windows, transom windows and casement windows.
When do I need to use a window installation company?
You should hire a window installation professional whenever you want to replace your windows. Installing windows is a complex process that can be difficult to do on your own, so it's best left to the professionals.
How long does window installation generally take?
Because the average installation time is 30 minutes per window, about 16 windows can be installed in a typical 8-hour work day.
What time of year is the best time to replace my windows?
Replacement windows can be installed at any time, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into the house, so the temperature outside doesn't necessarily matter that much. What's most important is that the weather should be dry.