Custom Windows

Simsbury, CT | Avon, CT

Free, In-House Consultations 

Free Quotes 

Showroom Available

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Beautiful Custom Windows for Your Home

Your home deserves windows that fit perfectly and match your style. At A-1 Windows & Doors, we design custom windows that improve energy efficiency, boost curb appeal, and increase comfort. If you're replacing one window or updating your entire home, we'll help you find the right solution. Our services include:

  • Vinyl replacement windows
  • Double-hung and casement styles
  • Bay and bow window installations
  • Energy-efficient glass options
  • Custom sizing and configuration
  • Measurement and installation


Reach out to us today for your free consultation and quote.


Why Your Home Needs Custom Windows

Standard windows don't always fit right. This leaves gaps that waste energy and money. Custom windows solve these problems while adding value to your property. Here's why homeowners choose custom solutions:

  • Perfect fit for unique or non-standard openings
  • Better insulation cuts heating and cooling costs
  • Improved noise reduction for quieter spaces
  • Increased home value and curb appeal
  • Better ventilation and natural light control
  • Personalized styles match your home's design


When your windows work properly, your entire home feels more comfortable. We'll make sure you get exactly what you need.


Why Choose A-1

Since 1989, we've been helping neighbors across the Greater Farmington Valley with quality window installations. As a locally owned family business with 50 years combined experience, we're committed to your satisfaction. Here's what sets us apart:

  • Free quotes delivered within 3 business days or less
  • Showroom available for hands-on selection
  • Free in-house consultations at your convenience
  • No subcontractors—our team handles everything
  • EPA certified for safe, compliant installations
  • 10-year installation guarantee for peace of mind
  • No job too small—we'll replace even one window


You'll work directly with real people who care about getting it right. We're your one-stop shop for everything except manufacturing the product itself.


Contact Us

Ready to upgrade your home with custom windows that fit perfectly and perform beautifully? Our experienced team is standing by to answer your questions and schedule your free consultation. We'll guide you through every step, from selection to installation, making sure you're completely satisfied with the results.


Contact us now to get your free quote and discover the A-1 difference.

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10-Year Installation Guarantee on Your Windows
We stand behind our work with a decade-long guarantee. Your investment is protected, giving you peace of mind for years to come.
Ready to upgrade your windows with confidence?
A1 Windows & Doors LLC
First Responders Save 5%

A-1 honors those who serve our community. First responders receive 5% off all window installation services throughout the Greater Farmington Valley and surrounding towns.

Contact A-1 today to schedule your installation!

Not valid with any other offers or promotions. Restrictions apply.

Must mention this coupon at the time of scheduling.

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