Window Installation ServiceWindow SupplierDoor SupplierSiding ContractorHome Improvement StoreWindow World
Experience Window World's unrivaled ENERGY STAR replacement windows, doors, vinyl siding, shutters and more. Contact us to schedule your free in-home or virtual quote today!
Great experience from salesperson, office staff and installers. Best value for the price.
AP
Anthony Peddigree
Dec 19, 2025
5.0
Quick and courteous staff. Very professional and cleaned up everything and took all the trash away. Highly recommend. Thanks guys
JH
Jens Hansen
Dec 19, 2025
5.0
The process was pretty seamless. The installation crew was fantastic. They were courteous, they were clean, and they were quick!
JR
Johanne Rebovich
Dec 17, 2025
5.0
We had the first floor windows of our house replaced this year. Great experience. Good quality windows. We have just scheduled the top floor windows be replaced as well. Would highly recommend Window World.
JR. Bethlehem PA 2025
JF
Jack Fissel
Dec 12, 2025
5.0
Windows are performing as advertised. Tight seal with no drafts as advertised. We had 4 windows and a slider replaced in our 22 year old condo with no issues. Installers showed up when promised and worked really clean. When they left you couldn’t even tell anyone was here ( besides the new windows, of course). Would recommend window world and their installers to anyone!
Frequently Asked Questions About Window World of Lehigh Valley
What does "Any Size, Installed" mean?
The term "Any Size" refers to any size replacement Double-Hung window our manufacturer will construct. Currently this is a minimum width and height of 15" X 26" and a maximum of 48" X 78". "Installed" refers to the removal of a basic Double-Hung wooden window and installing your new Window World replacement window, using the existing wooden stops.
What types of payment methods and financing do you offer?
We offer a variety of payment methods and financing options (subject to approved credit) depending on promotional period. Please contact us for more information regarding available options.
Will the replacement windows be installed from the inside or outside?
The majority of our replacement windows are installed from the outside. In some situations it may be necessary to install from the inside. On the day of installation, your installation expert will assess your unique situation and explain the process that will best suit your home.
Do you install replacement windows year-round? If so, will I lose a lot of heat/cooling at the time of installation?
Window World installs replacement windows year-round. An average installation will take only one day. Our crews install one window at a time and are trained to do what they can to minimize heating/cooling loss. The energy savings from your new windows will recover any incremental energy costs incurred during their installation many times over during their lifetime.
How can I prepare my house for my replacement windows?
Please take down curtains, blinds, or any other window treatments. Security sensors should also be removed and turned off by your security company. Please provide our installation expert with a clear path to the window(s) being replaced by moving anything that may be in the way. It is also advisable to remove all wall decorations from the walls close to the windows as they may fall during removal or installation.
How long will it take to get my replacement windows? How much time should I allow for the installation?
Since every window ordered is custom-built to fit your home and design choices, manufacturing times vary. Once delivered, the type of window being installed and the type being removed help determine the amount of time needed to complete the job. On average, each window takes about 30 minutes. Trim work and cleanup will require additional time to complete. An average job will take a single day.
What type of warranty is available for my windows?
All windows and patio doors we sell come with a manufacturer’s lifetime limited warranty and a repair labor guarantee, good for as long as you own your home! Contact us or see our warranties page for more details.
What happens to my old windows?
After installing your new replacement windows we remove all old windows from your property and dispose of them properly. If you wish to keep your old windows or storm windows, please notify the installation crew as soon as it arrives for your installation.
What do I do if there is a problem with the windows?
Most of the issues encountered by our customers are easily corrected and don't necessarily mean that there is a problem with your window. You are always welcome to contact us for help.
I'm overwhelmed by all the industry jargon. What do these words mean?
At Window World, it's our goal for each and every one of our customers to feel comfortable throughout their home improvement experience. We try to always explain any construction concepts in terms everyone will know when we're in the home, but we also like to make definitions available in advance. If there are any concepts you'd like to read up on as you research your options, feel free to download our Industry Terms document.
What are the business hours for Window World of Lehigh Valley?
Window World of Lehigh Valley is open Monday through Friday from 9:00 AM to 5:00 PM and closed on Saturdays and Sundays.
What payment methods and financing options are available?
They accept cash, check, and offer financing options subject to approved credit and promotional periods. Contact them for more details.
What types of products and services does Window World of Lehigh Valley offer?
They offer ENERGY STAR replacement windows, doors, vinyl siding, shutters, gutters, as well as installation services for windows, doors, and vinyl siding.
How long does a window installation usually take?
An average job takes about one day, with each window installation taking about 30 minutes plus additional time for trim work and cleanup.
Are the replacement windows installed from inside or outside the home?
Most replacement windows are installed from the outside, though sometimes installation from the inside is necessary depending on your home's specifics.
Will I lose a lot of heat or cooling during window installation, and do you install year-round?
Window World installs windows year-round. Crews minimize heat or cooling loss by installing one window at a time, and energy savings will offset any minor losses during installation.
How can I prepare my home for the window replacement installation?
Remove curtains, blinds, or window treatments and have security sensors disabled. Also provide clear access to the windows and remove nearby wall decorations.
What nearby places can I visit before or after my appointment at Window World of Lehigh Valley?
You can visit Willow Street Pub for a meal or drinks, Newhard Farms Corn Shed for fresh produce, or Anita's School of Dance for fun activities nearby.
Are there any nearby services that might be useful for homeowners?
Nearby you can find Web Windows and Doors Direct for roofing and window supplies, Drobot Automotive for car repairs, and North Whitehall Chiropractic for health services.
Is there a nearby place where I can enjoy barbecue near Window World of Lehigh Valley?
Yes, Bad Bones BBQ, LLC and Grumpy's Bar B Que Roadhouse are nearby barbecue restaurants you can enjoy after visiting.