Window Installation in Long Hill, CT

Windows That Actually Lower Your Bills

Professional window installation that cuts energy costs and improves your home’s comfort year-round.

Two workers in orange safety vests and gloves are installing a window. One holds the window frame, while the other secures it in place, much like a roofing contractor in New London County ensuring a sturdy roof. The background reveals a blurred view of greenery outside.

Hear from Our Customers

A man in blue overalls and a cap is smiling while using a caulking gun to seal a window frame in New London County, CT. He stands in a bright room with natural light streaming in, perhaps taking a break from roof installation tasks.

Professional Window Replacement Long Hill

What You Get With New Windows

Your heating and cooling bills drop noticeably within the first month. No more fighting with windows that stick or won’t stay open. No more feeling drafts when you walk past certain rooms.

You’ll notice the difference immediately when outside noise stays outside. Your home feels more comfortable in every season, and you’re not constantly adjusting the thermostat to compensate for heat loss or gain.

The right windows also change how your home looks from the street. Clean lines, proper proportions, and that “well-maintained” appearance that makes neighbors take notice. When it’s time to sell, quality windows are one of those improvements that buyers actually pay for.

Long Hill Window Company

We Know Connecticut Weather

We’ve been installing windows in Connecticut for years, which means we understand what works here. We know how our winters test window seals and how summer humidity affects different materials.

We’re not a national chain that rotates through different crews. You’re working with local contractors who live in the area and stand behind our work. We source our windows from manufacturers who build for New England weather, not just general climates.

When we give you a timeline, we stick to it. When we quote a price, that’s what you pay. No surprises, no pressure tactics, just straightforward window installation done right.

Sporting a white hard hat and blue overalls, an individual measures a window frame with precision using a tape measure. The partially open window provides a blurred backdrop of other frames, reflecting the bustling energy of roof installation projects in New London County, CT.

Window Installation Process Connecticut

Here's How We Handle Your Project

We start with measuring your existing windows and discussing what you want to achieve. Better energy efficiency, easier operation, improved appearance, or all three. We’ll show you options that make sense for your home and budget.

Once you’re ready to move forward, we order your windows custom-made to fit your openings exactly. No forcing standard sizes into non-standard spaces. When your windows arrive, we schedule installation at your convenience.

Installation day, we protect your floors and furniture, remove old windows carefully, and install new ones with proper sealing and insulation. We clean up completely and walk through everything with you to make sure you’re satisfied. Most single-family homes take one to two days depending on the number of windows.

Two workers in uniforms and caps are installing a glass window frame in a white wall. One person holds the frame while the other makes adjustments at the top. Tools are placed nearby on the window ledge.

Ready to get started?

Explore More Services

About Sullivan Contracting

Get a Free Consultation

New Windows Long Hill CT

What's Included In Every Installation

Every window installation includes proper measurement, custom ordering, professional installation, and complete cleanup. We handle permits if needed and coordinate with you on timing that works for your schedule.

You get manufacturer warranties on the windows themselves plus our warranty on installation workmanship. We use proper flashing, sealing, and insulation techniques that prevent air leaks and water infiltration. No shortcuts that cause problems later.

We also include a final walkthrough where we show you how to operate and maintain your new windows. You’ll know how to clean them, adjust locks, and spot any issues early. Most homeowners find their new windows need virtually no maintenance for years.

A person in yellow gloves expertly handles a white window frame with multiple panes, bringing a touch of brightness. It reveals lush green foliage through the opening. The light-colored interior wall complements the scene, reminiscent of meticulous roofing contractor work in New London County, CT.
Most single-family homes take one to two days for complete window installation, depending on the number of windows and any complications we encounter. We typically install 8-12 windows per day with a two-person crew. If you’re replacing all windows in a larger home, we might spread the work over several days to minimize disruption to your daily routine. Weather can affect timing for exterior work, but we’ll keep you updated and reschedule if conditions aren’t suitable for proper installation.
Vinyl windows handle Connecticut’s temperature swings better than wood because they don’t expand and contract as much. They won’t rot, need painting, or require regular maintenance like wood windows do. Wood windows can look beautiful but need more upkeep in our climate with humidity, snow, and temperature changes. Vinyl also provides better insulation value for the money and typically lasts 20-30 years without major maintenance. For most Long Hill homeowners, vinyl offers the best combination of performance, appearance, and long-term value.
Most homeowners see 15-25% reduction in heating and cooling costs after replacing old windows with energy-efficient ones. The exact savings depend on your current windows’ condition, your home’s insulation, and how you heat and cool your home. Single-pane windows or windows with broken seals waste the most energy, so replacing those typically shows the biggest savings. In Connecticut, where we use both heating and air conditioning heavily, good windows pay for themselves over time through lower utility bills.
Most window replacements in Long Hill don’t require permits if we’re replacing existing windows with similar sizes. However, if we’re changing window sizes or structural openings, permits may be needed. We handle all permit applications and inspections when required, and we’ll let you know upfront if your project needs permits. We’re familiar with local building codes and make sure all work meets or exceeds requirements. This protects you and ensures your windows are installed correctly for insurance and resale purposes.
You get two warranties: manufacturer warranty on the windows themselves (typically 10-20 years depending on the brand) and our installation warranty covering workmanship. Manufacturer warranties cover defects in materials, glass seal failure, and hardware issues. Our installation warranty covers proper fit, sealing, and any installation-related problems. We stand behind our work and will return to fix any issues that arise from improper installation. Keep your warranty paperwork in a safe place and contact us first if you notice any problems.
We install windows year-round in Connecticut, including winter months. Modern installation techniques and materials work fine in cold weather, and we take extra precautions to minimize heat loss during installation. We work quickly to remove old windows and install new ones, usually having each opening sealed within an hour. We avoid installation during storms or extremely cold days (below 20°F) when materials become difficult to work with. Winter installation actually lets you feel the immediate comfort improvement since you’ll notice the difference in drafts and heat retention right away.