(301) 337-5656

Window Replacement & Installation in Gaithersburg, MD

Get a free online quote on new windows from the top-rated window company in Gaithersburg

bow window installed in the front of a home

Is it time to update your home with a set of new windows? Zen Windows DC is changing how homeowners buy new windows through our radical no-stress approach. We don’t play the sales game with presentations and pressure: We produce fast, exact quotes that are 100% transparent, so you can easily make the best decision for your home.

Our Window Styles

Whether you’re replacing windows for aesthetic reasons or looking to improve your home’s energy efficiency, Zen Windows offers only the highest-quality windows to Gaithersburg residents. Our vinyl window styles include:

If you need a custom solution, we can also provide special-shaped windows configured to your specific needs.

Financing Your Replacement Windows

Homeowners often put off replacing windows because it’s a significant investment. Zen Windows understands it’s a big decision, so we’ve decided to make it easier by offering window replacement with a no-money-down guarantee and multiple financing options.

Whether you want to finance through a low-APR option or make interest-free payments with a 12-month same-as-cash agreement, Zen Windows will work with you to find the smartest financing option for your new Gaithersburg windows.

Our Doors

Zen Windows DC doesn’t just supply Gaithersburg with top-tier windows — we can upgrade your home’s entry door as well. Our fiberglass doors come with the visual appeal of a traditional wood door, without the issues like warping, swelling, or rotting.

Fiberglass doors are scratch-resistant and low-maintenance, and they provide exceptional thermal insulation.

We also specialize in sliding patio doors that come in a variety of options to make them more durable and energy-efficient, such as:

  • Low-E glass
  • Solar window films
  • Double- and triple-pane construction
  • Insulated glass
  • Foam insulation
  • Moisture-resistant corner spacers
  • Ultra-smart weatherstripping

Contact Zen Windows to learn more about the advantages of our doors and get a free quote on sliding glass or entry door replacement in Gaithersburg.

Why Zen Windows?

The traditional sales model just doesn’t cut it for window and door replacement. Zen Windows DC is committed to streamlining the process and eliminating high-pressure situations that come from people being paid on commission.

When you contact us with your project specifications or work with us to develop a plan, you get a 100% transparent and accurate quote you can trust.

Don’t wait to get the new windows you’ve been dreaming of. Call Zen Windows DC at (301) 337-5656 or get your free quote online today.

Why Choose Zen Windows

Double Warranty
Direct Access to the
Decades of
Simple &
Accurate Quotes
No Sales

Our Awards


We're changing the way people buy windows

No down payments, no pushy salespeople, a lifetime warranty and you work directly with the owner. Request a quote or give us a call to get started