20 Best Window Companies in Knoxville, IA (2023 Reviews)
Thinking about upgrading your home's windows? We've got you covered in this list of the top window installation companies.
We analyzed all the top-rated window companies in Knoxville 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
Although renewable energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house's energy efficiency can also have a large impact on home energy conservation. Poor windows can make your AC or heater work extra hard in the summer or winter.
That's also bad news for the environment because the additional energy used by drafty windows increases your carbon footprint.
Unlike other sites, EcoWatch ranks window companies on energy efficiency while also taking into consideration cost, customer satisfaction and service area.
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 Knoxville
The EcoWatch Reviews team assessed several window providers across Knoxville to narrow our list down to the top ones. The providers in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

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 offers windows expertise in Knoxville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This window installation company has been in business since 1995 and currently services 200 locations nationwide.
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, this may be the perfect company for you.
Energy Efficiency of Window World WindowsWindow World’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 Knoxville?Pricing details are not available on Window World’s website because 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. Receiving a free quote on its website is the best way to get more accurate information.

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 offers the best availability in Knoxville. Andersen has about 27 years of experience in the windows industry, and it currently serves nearly every state except Mississippi and West Virginia. Its reputation is backed by several positive reviews on customer review websites.
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 WindowsRenewal by Andersen is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. 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 Knoxville?Andersen doesn’t have any pricing information displayed on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more detailed information on the cost, you can receive 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 Knoxville. Universal has about 20 years of experience in the window installation sector. The company has many glowing reviews from customers on online review websites.
If you’re looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the provider for you.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct appeals to eco-conscious consumers by providing energy-efficient window offerings. 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 Knoxville?Even though prices are 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. The best way to know for sure is to ask for a free quote from the company.
We have tried to be unbiased and transparent by describing pros and cons for every company. Additionally, any partnerships do not influence our rankings.
More Window Companies in Knoxville
Renewal by Andersen of Des Moines
West Des Moines, IA-
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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Window Replacement
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Full-Service Installations
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Sliding Glass
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Double-Hung
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Bay Windows
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Residential Windows
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Commercial Windows
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Glass Showers
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Stained Glass
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Custom Window Designs
Window World of Des Moines
Des Moines, IA-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Double-Hung
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Sliding Glass
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Window Replacement
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Custom Window Designs
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Fast Delivery
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Bay Windows
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Residential Windows
Champion Replacement Windows of Des Moines
Grimes, IA-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Window Replacement
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Custom Window Designs
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Residential Windows
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Bay Windows
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Sliding Glass
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Double-Hung
Pella Corporation
Pella, IA-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Stained Glass
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Double-Hung
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Fast Delivery
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Commercial Windows
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Window Replacement
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Glass Showers
Pella Windows & Doors of Pella
Pella, IA-
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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Energy-Efficient Options
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Residential Windows
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Bay Windows
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Sliding Glass
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Double-Hung
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Window Replacement
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Custom Window Designs
Midwest Seamless Vinyl Siding & Windows Inc.
Des Moines, IA-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Sliding Glass
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Residential Windows
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Double-Hung
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Window Replacement
Recon Roofing & Construction
Des Moines, IA-
Educational Website
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Timely Service
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Window Replacement
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Fast Delivery
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Custom Window Designs
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Commercial Windows
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Residential Windows
Window Source of Des Moines
Des Moines, IA-
Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Sliding Glass
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Double-Hung
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Window Replacement
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Energy-Efficient Options
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Residential Windows
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Commercial Windows
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Tempered Glass
Architectural Glass and Glazing of Des Moines
Des Moines, IA-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Window Replacement
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Custom Window Designs
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Fast Delivery
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Glass Showers
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Residential Windows
Farm & Home Builders Inc
Des Moines, IA-
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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Residential Windows
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Custom Window Designs
Waddle Exteriors & Roofing
West Des Moines, IA-
Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
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Window Replacement
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Full-Service Installations
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Commercial Windows
Corn Belt Aluminum, Inc.
Des Moines, IA-
Price Transparency
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Good Customer Service
Services Offered
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Aluminum Window Frames
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Residential Windows
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Window Replacement
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Custom Window Designs
Superstorm Restoration Roofing, Gutters, Siding & More
Urbandale, IA-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Stained Glass
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Window Replacement
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Fast Delivery
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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
A New Look Exteriors
Windsor Heights, IA-
Price Transparency
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Timely Service
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Free assessment
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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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Fast Delivery
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Commercial Windows
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Window Replacement
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Residential Windows
Your Home Improvement Company - Windows & Bath
Urbandale, IA-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Glass Showers
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Double-Hung
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Residential Windows
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Bay Windows
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Custom Window Designs
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Energy-Efficient Options
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Fast Delivery
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Window Replacement
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Full-Service Installations
Glass Doctor of Des Moines
Clive, IA-
Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Window Repair
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Double-Hung
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Glass Showers
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Window Replacement
Mad City Windows & Baths
Grimes, IA-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Custom Window Designs
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Sliding Glass
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Window Replacement
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Glass Showers
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Residential Windows
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Double-Hung
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Energy-Efficient Options
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Fast Delivery
Pella Window and Door Showroom of Des Moines, IA
Urbandale, IA-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Stained Glass
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Sliding Glass
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Fast Delivery
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Double-Hung
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Bay Windows
America's Best Choice Windows & More Des Moines
Clive, IA-
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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Commercial Windows
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Energy-Efficient Options
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Window Replacement
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Residential Windows
NuVu Builders Inc
Grimes, IA-
Free assessment
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Price Transparency
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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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Commercial Windows
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Window Replacement
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Energy-Efficient Options
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Custom Window Designs
Calculate how much you can expect to pay for window installation and replacement in Knoxville, IA 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 Knoxville Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on electricity bills. Here are more ways switching out your windows could help you:
- Better temperature control in your home: Living in a hot place like Knoxville can often mean relying on your air conditioner to keep your house cool. Energy-efficient windows can cut back on how hard your AC needs to work to cool your home.
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its real estate value, particularly if your home is on the older side.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can lower your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Better temperature control in your home: Residing in a very cold place like Knoxville can often mean depending on your heater to keep your home cool. Energy-efficient windows can reduce how hard your heating system needs to work to heat your home.
Estimated Cost of Window Replacement in Knoxville
Let's take a look at the cost of window installation and the types of services offered by installers.
How Much Do New Windows Cost?
According to our market research, the average cost to install a single window is about $600. However, window replacement costs can range from $200 to $1,200 for each window. Costs will differ significantly based on the number of windows you need, your location, the current condition of your home and the quality of your products. Many window companies also offer door installations and other add-ons like shutters, baths, coating and more. Additional services will increase your overall project costs.
It's also worth keeping in mind that energy-efficient windows will almost always cost more initially, but Energy Star predicts that switching out the windows on your Knoxville home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you'll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
Costs will also vary depending on the material of your frame. Aluminum frames are the least expensive. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made using wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
The first thing to ask yourself when planning a window installation is: Do you need a full-frame installation or a pocket installation?
Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has a great amount of damage. Full-frame installations are more comprehensive and will increase overall costs. A pocket installation entails installing a new window without replacing the frame. So, instead of removing the whole unit and reinstalling it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company can recommend the best type for your project. In Knoxville, the decision will mostly be based on how much damage there is currently and how old your existing frames are.
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 Knoxville
In our hunt to make your home improvements easier and more eco-friendly in Knoxville, the EcoWatch team assessed dozens of companies before settling on these. We have assessed the top window installation companies in Knoxville mainly based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Since this is a guide for Knoxville, we paid more attention to companies that serve the city. There are certainly other reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Knoxville.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each installer on this list to make sure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including professionalism, cost, warranty, quality of parts, quality of installation and more.
Cost
This one is a give-and-take: as with most services, cheap window installers are not going to provide the most quality service. On the other hand, we want to make sure we're highlighting companies that provide a range of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a substantial investment, so you'll want to make sure that investment is well protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Knoxville's climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of Knoxville window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Knoxville, IA Window Replacement FAQs
How much should window installation cost?
The national average cost to replace one window is about $600 but can range from $200 to $1,200, based on a variety of factors. The price is generally dependent on the size of the window, the location of your property and the type and material of the window. Also, keep in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What are the most common types of replacement windows?
The most common kinds of windows for homes are transom windows, awning windows, picture windows, casement windows, bay windows, slider windows and double-hung and single-hung windows.
Can you install your own windows?
If you're handy and have the time and patience to do the job right, it's possible to install your own windows. But if you don't have the time or know-how, we recommend hiring a professional.
Should I replace my windows all at once?
If your windows are greater than 20 years old, it's probably time to replace all of them. By that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less stress.