20 Best Window Companies in Mount Lebanon, PA (2025 Reviews)
If you’re thinking about upgrading to new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in Mount Lebanon and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
A guide on the best window replacement companies in Mount Lebanon may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might think. If you have traditional, outdated windows, your AC or heater could be working overtime to heat or cool your house. This means spending more on energy bills.
That’s bad news for your bank account and the environment, but one of the best window installation companies can help with that.
Unlike other sites, EcoWatch ranks window replacement companies based on energy efficiency while also balancing cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best Window Installation & Replacement Companies in Mount Lebanon
The EcoWatch Reviews team assessed dozens of companies that serve the Mount Lebanon area to find the best window installation companies by our standards. The installers in this article scored best in our categories, which include energy-efficient offerings, customer service, availability, price and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World has windows expertise in Mount Lebanon. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation industry, and it has become one of the best companies in the business. The provider has plenty of glowing 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 high-quality 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 Mount Lebanon?Pricing details are not available on Window World’s website because the cost of window replacement 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. Requesting a free quote on its website is the best way to know for sure.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen has the best availability in Mount Lebanon. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the window installation industry, and it has become one of the best companies in the business. The provider has plenty of glowing reviews from customers on online review websites.
It has established itself as 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 WindowsRenewal by Andersen offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. 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 Mount Lebanon?Pricing details are not available on Andersen’s website because the cost of window replacement 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. Requesting a free quote on its website is the best way to know for sure.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Mount Lebanon. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. This company has 23 years of experience in the window installation industry, and it has become one of the best companies in the business. The provider has plenty of glowing reviews from customers on online review websites.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.
How much does Aeroseal Windows cost in Mount Lebanon?Pricing details are not available on Aeroseal’s website because the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Requesting a free quote on its website is the best way to know for sure.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation has the best residential windows in Mount Lebanon. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has 16 years of experience in the window installation industry, and it has become one of the best companies in the business. The provider has plenty of glowing reviews from customers on online review websites.
It has established itself as a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in Mount Lebanon?Pricing details are not available on Window Nation’s website because the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. Requesting a free quote on its website is the best way to know for sure.
Please note that the companies in this section are national, which means the quality of the service may vary depending on your local team. We have tried to stay unbiased and transparent by mentioning both pros and cons for each provider.
More Window Companies in Mount Lebanon
Renewal by Andersen of Greater Pittsburgh
Canonsburg, PACustom window designs
Free assessment
Price Transparency
Good Customer Service
Free in-home consultation
Affordable financing options
Educational Website
Services Offered
Custom Window Designs
Skylights
Window Replacement/Installation
Glass Doors
Bay Windows
Double-Hung
Power Home Remodeling
Coraopolis, PAGood Customer Service
Energy-efficient
Lifetime labor warranty
Full-home remodeling
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Monroeville, PAPrice Transparency
Free assessment
Educational Website
Services Offered
Vinyl Frames
Custom Window Designs
Double-Hung
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Bay Windows
Metropolitan Window Company
Pittsburgh, PAFinancing options available
Variety of styles and materials
Educational Website
High performance
Price Transparency
Free assessment
Good Customer Service
Services Offered
Wood Frames
Fiberglass Frames
Window Replacement/Installation
Glass Doors
Bay Windows
Double-Hung
Energy-Efficient Options
"ALL-NU" Windows
Oakdale, PAFamily-owned and operated
Educational Website
Meet or beat pricing policy
Price Transparency
Financing options available
Services Offered
Window Replacement/Installation
Specialty Window & Door
West Homestead, PAEducational Website
Free assessment
Services Offered
Double-Hung
Bay Windows
Window Replacement/Installation
Custom Window Designs
Glass Doors
Energy-Efficient Options
Go Green Windows & Construction
Lower Burrell, PAFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Bay Windows
Double-Hung
Glass Doors
Window Replacement/Installation
Kish Windows and Doors
Murrysville, PAFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
City Wide Windows Inc.
Greensburg, PAGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Vinyl Frames
Bay Windows
Double-Hung
Window Replacement/Installation
Windows Pittsburgh
Pittsburgh, PAFull-service window replacement
Financing options available
Custom window designs
Free assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Vinyl Frames
Double-Hung
Glass Doors
Window Replacement/Installation
Bay Windows
Custom Window Designs
Energy-Efficient Options
American Window Industries Inc.
Pittsburgh, PAPrice Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Pella Windows & Doors of Warrendale
Warrendale, PAGood Customer Service
Free assessment
Educational Website
Services Offered
Glass Doors
Fiberglass Frames
Bay Windows
Double-Hung
Wood Frames
Window Replacement/Installation
Budget Blinds of Cranberry & Sewickley
Cranberry Twp, PAEducational Website
Good Customer Service
Free assessment
Services Offered
Custom Window Designs
Energy-Efficient Options
Window Replacement/Installation
Expert Glass Company LLC
Export, PAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Glass Repair
Glass Showers
Mirrors
Window Repair
Window Replacement/Installation
Double-Hung
Energy-Efficient Options
The Window Source of Morgantown
Morgantown, WVEducational Website
Good Customer Service
Timely Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Custom Window Designs
Pella Windows & Doors of Morgantown
Morgantown, WVGood Customer Service
Free assessment
Educational Website
Services Offered
Double-Hung
Glass Doors
Window Replacement/Installation
Bay Windows
Vinyl Frames
Window World of South Central PA & Northwest MD
Somerset, PAPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Glass Doors
Bay Windows
Window Replacement/Installation
Double-Hung
Pella Windows & Doors of Canfield
Canfield, OHEducational Website
Good Customer Service
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Double-Hung
Bay Windows
Vinyl Frames
Window Town of Youngstown
Youngstown, OHFree assessment
Timely Service
Educational Website
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Bay Windows
Double-Hung
Energy-Efficient Options
Glass Doors
Legacy Remodeling
Pittsburgh, PAFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Glass Showers
Energy-Efficient Options
Wood Frames
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in Mount Lebanon, PA 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 Mount Lebanon Saves You Money
When you switch to energy-efficient windows, you may see a few benefits, such as:
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, especially if you have an older home.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can cut your carbon footprint by about 12%, according to Energy Star.
- Save money on energy bills: Installing energy-efficient windows reduces your energy bills by about 12% because you need less energy.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Mount Lebanon
Each window installer provides varying services and has varying prices based on several factors.
How Much Do New Windows Cost?
Typically, Mount Lebanon homeowners can expect their window installations to range from $250 to $1,200. The average cost sits at approximately $600. These numbers vary based on the specifics of your installation, like size, material, type, number of windows, the location of your home and more.
Bear in mind that energy-efficient windows may cost more, but Energy Star estimates the upgrade will save you between $101 and $583 per year when installing single-pane windows and between $27 and $197 per year when you replace double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.
Costs will also vary based on the material you choose 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 are the most expensive and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are typically two types of window replacement services: full-frame and pocket installations.
Full-frame installations entail replacing the full window, including the frame, sill and trim. Full-frame installations are necessary when you want to change the style of your windows or your window has noticeable rot. These installations are more involved and will increase the overall cost. Pocket installations (also known as retrofits) are when you replace a window while leaving the old frame. Pocket installations are simpler and won’t carry as large a bill, but you can’t do this kind of installment if you have any pre-existing rot or water damage.
If you’re not sure which kind of window installation service you should get, your installer can assist you. In general, the choice is influenced by factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
How We Choose the Best Window Installers in Mount Lebanon
EcoWatch reviews differ from most reviews, as we examine these companies through a sustainability lens. We’ve decided to review the best window installation companies in Mount Lebanon mainly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to lower energy 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 Mount Lebanon, we only included companies that cover the city. There are certainly reputable providers that didn’t make the cut because they wouldn’t be able to serve homeowners in Mount Lebanon.
Work Quality
When selecting new windows, the quality and variety of services can often play just as important of a role in insulation and performance as the brand of window you get. 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
Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have positive things to say about their service from a certain company, you won’t see it featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that provide a wide range of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Mount Lebanon’s climate, homeowners will want to mitigate water damage, rot and low efficiency. We factored in local experience to reflect the ability of Mount Lebanon window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Mount Lebanon, PA Window Replacement FAQs
How much does a window install cost?
The typical cost of replacing a window can range from $450 to $650. There are many factors that affect the price, including local labor costs, your property’s location, the number of windows, the materials used in designing the windows, styles and sizes of windows and how energy-efficient the windows are.
Which type of window should I get?
A window’s energy efficiency is affected by several factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.
What do window installers do?
Window installation companies will do the entire process — from replacing your old windows with brand-new ones to cleaning up after the installation. In addition, a lot of companies offer window manufacturing, customization and repairs.
How often do you need to replace windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Other than that, if your windows have damage anywhere on them, or they have become difficult to operate, they may be in need of replacement.
How long does it take to install windows?
Each window takes around 30 minutes to install based on the kind of window. However, the window installation can be a two-day job — or more — if you need to have a lot of windows installed.