Windows

Siding Services

Windows

Belvedere Exteriors – Energy-Efficient Window Experts Serving Suffolk & Nassau Counties

Belvedere Exteriors is a trusted window replacement contractor with over 20 years of experience providing high-quality, energy-efficient window solutions for homeowners throughout Suffolk & Nassau Counties. Our reputation is built on precision installation, premium materials, and results that improve comfort, efficiency, and curb appeal.



If your windows are drafty, outdated, difficult to open, or driving up your energy bills, our team delivers professionally installed replacement windows designed to enhance your home’s appearance while improving insulation, security, and long-term value.

  • Save Up To 40%
  • Free Consultations
  • Free On-Site Estimates
  • Free Roof Inspections

#1 Top-Rated Window Replacement Contractors

Trusted by All of Nassau & Suffolk Counties

Belvedere Windows Contractors

Window Services

Your windows directly impact your home’s comfort, energy efficiency, and appearance. Old or poorly installed windows can cause drafts, moisture issues, noise, and higher energy bills. At Belvedere Exteriors, we provide expert window replacement solutions that address these problems at the source.



With over 20 years of experience, we treat window replacement as both a performance upgrade and a visual investment. We assess your existing windows, insulation, and home style to recommend the best options. Serving homeowners across Suffolk & Nassau Counties, we specialize in residential window replacement that improves comfort, lowers energy costs, and enhances curb appeal.

  • Full Window Replacement For Homes
  • Energy-Efficient Window Installation
  • Double-Hung Window Replacement
  • Casement, Awning & Slider Windows
  • Bay & Bow Window Installation
  • Picture & Specialty Windows
  • Vinyl Window Replacement
  • Low-E Glass & Insulated Window Systems
  • Drafty & Leaking Window Replacement
  • Window Frame & Trim Replacement
  • Sound-Reducing Window Solutions
  • Egress Window Installation
  • Select Commercial Window Services

Our Window Replacement Process

We believe window replacement should be straightforward, informative, and stress-free. Our proven process ensures clarity, confidence, and quality results from start to finish.

1

Free On-Site Window Inspection

Evaluation of existing windows, frames, insulation & energy performance.

2

Clear Estimate & Product Consultation

Window styles, materials, efficiency ratings, and pricing explained clearly.

3

Scheduling & Preparation

Organized scheduling with respect for your home and daily routine.

4

Professional Window Installation

Precision installation to ensure airtight seals, proper fit & durability.

5

Final Inspection & Cleanup

Thorough inspection, testing, and complete cleanup before project closeout.

Transform Your Home's Exterior

Save Up To 40% On Your New Window Installation

Window Replacement FAQs


  • How do I know if I need new windows?

    Drafts, rising energy bills, condensation between panes, difficulty opening windows, or visible damage are common signs.

  • Are energy-efficient windows worth it?

    Yes. Energy-efficient windows reduce heat loss, improve comfort, and lower heating & cooling costs.

  • Do you offer free window inspections?

    Yes. All window inspections and estimates are completely free and no-obligation.

  • How long does window replacement take?

    Most residential window replacement projects are completed in one to two days, depending on the number of windows.

  • Are you licensed & insured in Suffolk & Nassau Counties?

    Yes. We are fully licensed and insured in both counties.

  • Do you offer warranties?

    Yes. We provide a workmanship warranty along with manufacturer warranties.

  • Can new windows reduce outside noise?

    Absolutely. Insulated & sound-rated windows significantly reduce outside noise.

  • Do you replace window frames & trim?

    Yes. We replace damaged frames, sills, and trim as needed.

  • Is your current promotion available for window projects?

    Yes. Homeowners can save up to 40% on select window replacement services.

  • How do I get started?

    Call us or request a free estimate to schedule your inspection.