The Best Window Installers in Williamsport, PA

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

#1

Thompson Remodeling & Construction

4.8
(150 reviews)
Verified

A highly-rated, locally-owned and operated contractor known for personalized service and high-quality craftsmanship. They specialize in full-scale remodeling projects but have a dedicated division for window and door replacement, emphasizing energy-efficient solutions tailored to the Williamsport climate.

2019 E 3rd St, Williamsport, PA 17701

Specialties & Features

Custom window solutions
Energy-efficient windows
New window installation

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

Window Nation

4.7
(250 reviews)
Verified

A major regional provider that serves the Williamsport area. They are a high-volume company specializing exclusively in windows and doors, offering a wide range of brands and styles. They are known for their professional installation crews and strong focus on energy efficiency with their own line of windows.

(Serves Williamsport from a regional office, no public storefront)

Specialties & Features

Residential window replacement
Energy-efficient windows
Storm windows and security windows

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

Lycoming Supply Company

4.6
(80 reviews)
Verified

A trusted local institution since 1965, primarily known as a building materials supplier. They have a robust showroom and a network of recommended, certified installers for the products they sell. This makes them an excellent source for high-quality windows and professional installation, particularly for custom or specialty orders.

329 Rose St, Williamsport, PA 17701

Specialties & Features

Custom window solutions
New window installation
Window repair services

Business Information

Years in Business:55 years
Licensed:Yes
Insured:Yes

Why These Are the Top Windows Contractors in Williamsport

** The window market in Williamsport, PA, is competitive and characterized by a mix of long-standing local contractors and regional specialists. The quality of service is generally high, with a strong emphasis on energy efficiency due to the region's cold winters and humid summers. Homeowners are often looking for durable, low-maintenance vinyl windows to replace old wood single-pane units. Competition helps keep pricing fair, but consumers should expect a wide range of quotes. For a standard, double-hung vinyl window replacement project on an average home, prices can typically range from **$600 to $1,200 per window**, including professional installation. This cost fluctuates based on the window brand, energy ratings, customization, and the complexity of the installation. The most reputable providers are those with verifiable licensing, insurance, and a solid track record of local customer satisfaction.

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 Williamsport regulations and climate

Frequently Asked Questions About Windows in Williamsport

Get answers to common questions about windows services in Williamsport, Pennsylvania.

1What is the typical cost range for a full home window replacement in Williamsport, and what factors influence the price?

In the Williamsport area, a full home window replacement typically ranges from $8,000 to $20,000+, depending on the number and size of windows. Key cost factors include the window material (vinyl, wood, fiberglass), the quality of the glass package (crucial for our cold Pennsylvania winters), and the complexity of the installation in your specific home's architecture. Local labor rates and any necessary adjustments for older homes in historic districts can also affect the final price.

2When is the best time of year to schedule window installation in Williamsport, PA?

While installation can be performed year-round, the ideal windows for scheduling in North Central PA are late spring (May-June) and early fall (September-October). These periods typically offer mild, dry weather, which is optimal for the installation process and for having your home open. Avoiding the deep winter also helps prevent heat loss during the project and allows contractors to be more readily available compared to the peak summer demand.

3Are there specific energy efficiency recommendations for windows in Williamsport's climate?

Absolutely. Given Williamsport's humid summers and cold, snowy winters, we highly recommend windows with a low U-factor (for heat retention) and a low Solar Heat Gain Coefficient (SHGC) to manage summer heat. Look for double-pane, Low-E argon gas-filled windows. These specifications align with Pennsylvania's building energy codes and are essential for maximizing comfort and reducing heating bills, especially during our prolonged heating season.

4How do I choose a reputable window installation contractor in Lycoming County?

Start by verifying the contractor is properly insured and licensed in Pennsylvania. Ask for local references in the Williamsport area and check reviews on trusted sites. A reputable installer should provide a detailed, written estimate and be knowledgeable about local building codes, including any requirements for homes in Williamsport's historic districts. Always choose a company that is an authorized dealer/installer for the window brand they are selling.

5What are common installation challenges for older homes in Williamsport, and how are they addressed?

Many older homes in Williamsport have settled foundations, out-of-square openings, or historic wood frames that require careful attention. A professional installer will perform a detailed measurement and inspection to identify these issues. Solutions may include custom-sized replacement windows, careful re-framing, or the use of installation shims and proper sealing techniques to ensure a weather-tight, square, and operational fit that preserves the home's integrity.