Super Energy Saving Windows & Patio Doors
At A Super Affordable Price!
Manufactured In Medford, New Jersey, USA!




"If you find a window and service as good as ours at a better price...Buy it!"

See Jantek's YouTube Channel

See Jantek's Facebook Page





To our friends and customers,

We are committed to getting you the high quality, low priced windows and patio doors that you need and providing "The Jantek Difference," even during these uneasy times. The health and safety of our employees and our customers is our greatest priority right now, so please understand that some things may take a bit longer than normal.

Yes, you can get a Free TeleEstimate!
Jantek is open and accepting requests for estimates and orders. For the safety of our customers and Estimating team, we are implementing a new business process that allows us to gather the specifications for your replacement window/patio door project without your having to come to our showroom or our having to enter your home or business.  Just go to  to request an estimate. 

Yes, our manufacturing operations are open!
We have implemented a comprehensive COVID-19 operations plan for our manufacturing facilities that includes employee training, hygiene practices, social-distancing and facility sanitization methods. The plan allows for the protection of our employees and understandably these precautions will on our lead time which will move to about 3 to 4 weeks for product only orders. If you are having Jantek employees install your windows the installation will occur in 4 to 5 weeks from the contract date. 

Yes, Installation by Jantek employee crews is available on all orders!
We have implemented a comprehensive COVID-19 operations plan for Installation Services that includes employee training, hygiene practices, social-distancing and job-site sanitization practices. The plan allows for the protection of our customers employees during the job measurement and product installation. Most Installation jobs will be completed within one day and will minimize the time necessary on the building interior. Installation jobs can be completed within 4 to 5 weeks of the contract date.  Contact us at to arrange window replacement project with installation. 

Yes, Jantek’s Physical and Virtual Showrooms are now open!
If you are planning on visiting our physical showroom in Medford, New Jersey, we are open Monday through Friday from 9am until 5pm. Here you can see all of our products and receive a physical demonstration.  Our virtual showroom is available around the clock everyday at

Yes, Jantek’s Parts & Service Department is open!

In home service calls have been suspended during these challenging times. However, our Parts & Service Department can assist you with parts and instructions for maintenance and repair.  You can submit a warranty claim for covered parts by visiting us at pick them up at our Medford facility, or we can ship them to you.