The Best Window Installers in Sullivan, MO

Compare the highest-rated windows professionals in Sullivan, Missouri. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Window Nation of St. Louis

4.7
(250 reviews)
Verified

A leading regional window replacement company known for a wide selection of energy-efficient vinyl windows. They offer a strong warranty, professional installation crews, and a focus on residential replacement and new construction. While based in the St. Louis metro, they serve a wide area including Sullivan.

(Corporate Office) 4 Cityplace Drive, Suite 400, St. Louis, MO 63141

Specialties & Features

Energy-efficient windows
Residential window replacement
Custom window solutions

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Advanced Exteriors

4.8
(80 reviews)
Verified

A highly-rated local contractor based in Sullivan specializing in exterior home improvements. They have built a strong reputation for quality workmanship and customer service on projects including window and door installation, siding, and gutters. Their local presence makes them a prime choice for Sullivan residents.

10 Clark St, Sullivan, MO 63080

Specialties & Features

Residential window replacement
New window installation
Window repair services

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

St. James Glass

4.6
(110 reviews)
Verified

A well-established glass and window company serving a large portion of East Central Missouri, including Sullivan. They are known for handling a broad range of services from simple window repairs and sealed unit replacement to full-frame new installation and custom storm windows.

102 N Jefferson St, St. James, MO 65559

Specialties & Features

Window repair services
Storm windows and security windows
Custom window solutions

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes

Why These Are the Top Windows Contractors in Sullivan

The window service market in Sullivan, MO, is characteristic of a smaller city, with a mix of a few dedicated local contractors and a strong presence of regional companies from the St. Louis area and nearby larger towns like St. James. Competition is moderate, which helps maintain fair pricing. The average quality of service is high, as smaller local providers rely heavily on community reputation. For a standard double-hung vinyl window replacement, homeowners can expect a typical price range of $500 - $1,000 per window, including professional installation. The market shows a significant demand for energy-efficient upgrades and durable, low-maintenance solutions suited to the Missouri climate.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Sullivan regulations and climate

Frequently Asked Questions About Windows in Sullivan

Get answers to common questions about windows services in Sullivan, Missouri.

1What is the typical cost range for a full home window replacement in Sullivan, MO?

For a standard-sized home in Sullivan, a full window replacement typically ranges from $8,000 to $20,000, depending on the number of windows, materials (vinyl, wood, composite), and energy efficiency features. Missouri's climate, with its hot, humid summers and cold winters, makes investing in quality, energy-efficient windows like double-pane Low-E glass particularly valuable for long-term savings on heating and cooling bills. Always get itemized quotes from local installers that include removal, installation, and cleanup.

2When is the best time of year to schedule window installation in Sullivan?

The ideal times are late spring (April-May) and early fall (September-October). These periods typically offer mild, dry weather in the Sullivan area, which is crucial for a proper installation seal and allows for open windows during curing times. Scheduling in the off-peak seasons can also lead to better installer availability and potential promotional pricing, unlike the high-demand summer months.

3Are there any local permits or regulations in Sullivan I need to be aware of for window replacement?

For standard like-for-like residential window replacements in Sullivan, a building permit is generally not required. However, if you are altering the window opening size or if your home is in a designated historic district, you must check with the City of Sullivan's Building & Zoning Department. It is always the homeowner's responsibility to verify, but a reputable local installer will be familiar with these requirements and can guide you.

4How do I choose a reliable window installation contractor in the Sullivan area?

Prioritize contractors who are licensed, insured, and have a strong local reputation with physical addresses. Ask for references from homes in the Sullivan and Crawford County area to see their work firsthand. Verify they are familiar with installing for Missouri's weather extremes and check their standing with the Missouri Attorney General's Office or the Better Business Bureau for any unresolved complaints.

5What are the most important energy efficiency features for windows in our Missouri climate?

Given Sullivan's temperature swings, look for double-pane windows with Low-E (low-emissivity) coatings and argon gas fill to significantly reduce heat transfer. The U-factor (insulation value) and Solar Heat Gain Coefficient (SHGC) are key ratings; a lower U-factor is best for winter, while a moderate SHGC helps manage summer heat. Energy Star-certified products are tested for our specific North-Central/Regional climate zone.