Replacement Windows Near MeWindow contractors backed by a license record or a Google rating

Catonsville, MD's Highest-Rated Window Installers on Google

Catonsville's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 4A sets the energy bar for a Catonsville window job no matter which kind of list a contractor's name comes from. Checked September 2026.

Google Maps ratings checked · How we rank

4AIECC climate zone · ENERGY STAR North-Central zone

What Catonsville's climate means for your window spec

Catonsville sits in IECC climate zone 4A, the starting point for any code-minimum window performance here.

ENERGY STAR places Baltimore County in its North-Central zone for window certification.

Normal temperatures run 37°F in January and 82°F in July, so the glass package worth paying for in Catonsville isn't the same one that pencils out two zones over.

Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 7.2 mi away.

10 top-rated window replacement companies in and near Catonsville

Ranked by Google rating weighted against how many people left one, so a perfect score from a handful of reviewers never outranks a strong average built on hundreds. That ranking is not a license check; call the state directly and ask for the contractor's license or registration number.

Top-rated window replacement contractors in and near Catonsville, MD, with Google ratings
RankBusinessGoogle ratingReviewsCategoryAreaGoogle Maps listing
1Innovative Home Improvements 5.0 out of 5 on Google110Window installation serviceElkridge 21075Google reviews
2EC Roofing & Home Services Direct 4.9 out of 5 on Google218Window installation serviceCatonsville 21228Google reviews
3Alpha Design Services 4.9 out of 5 on Google125Window installation serviceEllicott City 21043Google reviews
4West Shore Home 4.8 out of 5 on Google1,339Window installation serviceLinthicum Heights 21090Google reviews
5Window World of Baltimore 4.6 out of 5 on Google113Window installation serviceBaltimore 21227Google reviews
6Aspen Home Improvements 4.7 out of 5 on Google14Window installation serviceElkridge 21075Google reviews
7HomeRite Windows and Doors 4.3 out of 5 on Google19Window installation serviceBaltimore 21244Google reviews
8Fortune Windows 4.2 out of 5 on Google13Window installation serviceBaltimore 21229Google reviews
9Universal Windows Direct of Baltimore 4.2 out of 5 on Google158Window installation serviceBaltimore 21244Google reviews
10Windowpro LLC 3.6 out of 5 on Google10Window supplierLinthicum Heights 21090Google reviews

Questions to ask before you sign

  1. How long have you held your state license, and can I see the number?
  2. Is this a full-frame replacement or an insert into my existing frame, and why that one?
  3. Who pulls the permit, and does this change trigger an egress check on a bedroom window?
  4. What flashing and sill pan will you use, and in what order do you install them?
  5. If my home was built before 1978, is your crew lead-safe certified for this job?
  6. What's the completion date in writing, and what happens if the schedule slips?

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