Featured

LongCo Window & Door

Window Installers in O'Fallon, Missouri
Ranked #3 in O'Fallon | Grade B+
4.90 (9 reviews)

LongCo Window & Door

Window installation service based in Wright City, supporting homeowners across the greater St. Louis and St. Charles areas with replacement windows and upgrades Serving homeowners across O'Fallon, Missouri.

LongCo Window & Door business photo 1 - Windows in O'Fallon
Why Homeowners Choose This Business

Straightforward estimates, organized installation, and results that improve efficiency and daylight. Local team with consistent feedback on timeliness and workmanship Local experience that helps homeowners across O'Fallon, Missouri compare a more region-aware provider.

Service Area

O'Fallon, Missouri, Wright City, and surrounding communities in St. Louis and St. Charles counties.

Featured Local Business

This featured listing includes fuller business details and a stronger local presentation for homeowners comparing nearby options.

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Listing details

This listing includes service information, customer review signals, a photo gallery, and public contact details to help homeowners compare this business more easily.

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  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average rating.

Services Covered

  Renovation Services
  Supplier
  Installations
  Window Replacement
  Window Installation
  Energy Efficient Windows
  Vinyl Windows
  Double Hung Windows
  Casement windows
  Sliding Windows
  Bay and bow windows
  Window Upgrades
  Residential Windows
  Window Estimates
  Gutter Replacement

Residential window replacement, new window installation, energy-efficient window options, window upgrades from builder-grade, and related exterior updates such as gutters reported in some projects.

Reviews

Customer Reviews

Renee Jackson
LongCo Windows is so easy to work with. Their work is outstanding & prices can't be beat. The difference in their windows vs builders grade is unbelievable! We would highly recommend LongCo Windows.
Jane Topper
We had 1 broken window, but decided to make the investment in replacing them all - mostly for the energy efficiency. But I didn't realize how much the windows would brighten the rooms and help bring the outdoors in without letting the sun…
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We had 1 broken window, but decided to make the investment in replacing them all - mostly for the energy efficiency. But I didn't realize how much the windows would brighten the rooms and help bring the outdoors in without letting the sun heat our rooms. We did our windows in June. I love the new windows so much. Looking out the windows now is like putting on a new pair of glasses and finding everything so much clearer. And they are so easy to clean now that they all tilt in - top and bottom windows. Our installer was wonderful. Cleaned up any mess made by the installation process. Removed and rehung all window treatments. The whole process, from sales presentation to installation was professional and thorough. Shawn Long and his entire staff exemplify what customer service is.
Susan B
We have used Longco for several jobs and are always happy with the work. They are efficient and thorough and do the work in a timely manner. Their estimates are always reasonable. They even took care of an emergency fence job for us as soon…
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We have used Longco for several jobs and are always happy with the work. They are efficient and thorough and do the work in a timely manner. Their estimates are always reasonable. They even took care of an emergency fence job for us as soon as we called. The owner and staff are great. We will continue to use this company and highly recommend them to all.
Andy Wilson
I had windows and new gutters installed this fall. I was very pleased with the installation and windows. They installed it on time and were easy to work with. I would call them again for my next project.
jason doyle
Very pleased with my experience with Long Window and Siding. Their attention to detail was outstanding. Thank You.
Richard

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Frequently Asked Questions

Homeowners report a range of options, including replacements that upgrade from builder-grade units. The team can discuss styles, glass packages, and frame materials suited to local climate and budget. They help match appearance and performance goals. Call to review the best fit for your home.

Customer feedback suggests projects are completed efficiently and on schedule. Timelines vary by home size and window count, but many replacements are completed within a planned window agreed during the estimate. Your installer will confirm sequencing, daily start times, and cleanup. Larger projects may span multiple days.

Several reviews mention noticeable improvements after replacing older or builder-grade windows. Energy savings depend on glass type, frame, installation quality, and your home’s conditions. During a quote, the team can outline performance ratings and expected benefits. They can also discuss options to balance efficiency and cost.

Reviews include both single-window fixes and whole-home projects. Availability for smaller jobs can depend on scheduling and product lead times. It’s best to call with details so they can advise on timing and options. They will provide an estimate before any work begins.

Crews typically confirm access, protect nearby areas, and remove old units before setting new windows. Reviewers note organized workflow and cleanup after the job. You’ll get a walkthrough to check operation and appearance. Keep pets secure and clear paths to each window to help the team work efficiently.
 Verified Listing

Opening Hours

  • Monday 8:30 AM – 5:00 PM
  • Tuesday 8:30 AM – 5:00 PM
  • Wednesday 8:30 AM – 5:00 PM
  • Thursday 8:30 AM – 5:00 PM
  • Friday 8:30 AM – 5:00 PM
  • Saturday Closed
  • Sunday Closed

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Business Details

Business Rating
4.90 (9 reviews) Featured BusinessPro Listing
Address
389 Bell Rd, Wright City, MO 63390
Business Type
Window Installation Service
Website
http://www.longco.us/
City Page
Window Installers in O'Fallon, Missouri

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