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Business Details
31 Years
experience
Custom Energy-Efficient Windows & Patio Doors in Medford, NJ
Founded in 1995, Jantek Industries has established itself as a trusted leader in the vinyl replacement window and patio door industry. Our business model prioritizes direct manufacturing and installation, eliminating middlemen to deliver premium products at competitive prices. With in-house engineering expertise and streamlined production processes, we specialize in custom-sized, energy-efficient windows and doors tailored to meet individual customer needs. Our TeleEstimate system enables accurate quotes without in-home visits, while the EnergyMiser product line showcases our commitment to innovation through advanced materials and multi-chamber reinforced frames.

Backed by decades of experience and a team of skilled installers, we serve Southern and Central New Jersey with a focus on quality, efficiency, and customer satisfaction. Our transferrable warranties and proprietary service portal ensure long-term value, and our showroom in Medford, NJ, provides hands-on product access. Customer testimonials consistently highlight our reliability, cost savings compared to major competitors, and one-day installation capabilities. We maintain transparency in pricing and avoid aggressive sales tactics, prioritizing straightforward service and measurable benefits like reduced energy bills and improved home comfort.
Services
Replacement Windows Patio Doors EnergyMiser Line Installation Services Service Portal
Details
  • Year established: 1995
Highlights and features
  • We've specialized in vinyl window and door manufacturing since 1995
  • Our TeleEstimate system provides accurate quotes without in-home visits
  • EnergyMiser technology delivers superior insulation with triple-pane glass
  • Competitive pricing through direct manufacturing eliminates middlemen costs
  • One-day installation with cleanup included for most window replacements
What people say
On-time installers Cost savings over 50% One-day installation Energy bill reduction Professional service
Services
Replacement Windows
Custom-manufactured vinyl replacement windows tailored to exact measurements. Our energy-efficient designs reduce heating and cooling costs while improving sound insulation. Triple-pane low-E glass and multi-chamber frames ensure durability and performance. Installation completed in one day with full cleanup included.
Patio Doors
Custom sliding patio doors with fusion-welded frames and energy-efficient glass packages. Designed for seamless operation and enhanced security. Installation includes threshold adjustments and weatherproofing. Available in multiple configurations to match architectural styles.
EnergyMiser Line
Proprietary line featuring reinforced vinyl frames and triple-pane insulation technology. Meets strict energy efficiency standards while maintaining aesthetic appeal. Reduces thermal transfer by up to 40% compared to standard replacement units. Backed by comprehensive warranty coverage.
Installation Services
Professional installation performed by factory-trained technicians. Includes removal of existing units, perimeter preparation, and precision fitting. One-day completion for most projects with interior and exterior cleanup. Service available for minimum orders of three windows.
Service Portal
Online portal for post-purchase service requests and warranty claims. Handles broken glass replacements, hardware adjustments, and operational issues. Service limited to Jantek-manufactured products with transferrable warranty documentation.
Questions
How can I get an accurate quote without a sales visit?
Our TeleEstimate form requires basic window dimensions and style preferences to generate precise pricing in under 5 minutes.
What areas do you service?
We serve Southern and Central New Jersey including Camden, Ocean, and Mercer Counties, plus Philadelphia and Bucks County, PA.
Do you offer financing options?
While we don't provide direct financing, we recommend checking with local banks or home improvement loan programs.
What makes EnergyMiser windows different?
EnergyMiser windows feature triple-pane glass, fusion-welded frames, and multi-chamber construction for superior energy efficiency and durability.
What's your installation process timeline?
Most orders complete within 3-4 weeks of measurement confirmation, with installation typically finished in one day.
Do you service non-Jantek products?
Our service portal only supports Jantek-manufactured windows and doors under active warranty coverage.
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Reviews (3)
Darcelle Kulinski
Sep 08, 2019 Report
We are very pleased with our sliding glass patio door. The team was totally professional and quite personable. Installation went smoothly and clean up was great! We couldn't be happier!
Mary Ann Strupczewski
Jan 08, 2017 Report
We had our front window replaced. It looks great, we chose the window with the grids. It matched the rest of our windows. It looks like it was always there. The triple pane double hung is great. We have no more drafts from the window. The service from the salesman to the installers was excellent! I will recommend to family and friends.
Gary Peterson
Nov 07, 2016 Report
I researched locally manufactured windows and found Jantek. My visit to their showroom was cordial, professional, and humorous thanks to Phil. Sorry Phil.