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TRUSTED BY MOUNT VERNON, WA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon172
    Verified window services reviews

Top-Rated Window pros in Mount Vernon - Updated Nov 2026

Avatar for 1ST CLASS GLASS INC.
1ST CLASS GLASS INC.
4.6(
100
)
New Windows - 6 +Window Glass - Install or ReplaceNew Windows - 2+6 more

Serving Mount Vernon, WA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Sean was awesome from the get-go. He was incredibly responsive, answered all my questions, and gave me a "best guess" number over the phone even before he had seen the window that was being replaced. He then showed up with his team (exactly on time) and they did the measurements and were right on with their initial estimate. The glass was a few weeks out to order (given the size) but right when they got it, Sean called and set up a delivery. Again, they were right on time within the window that they said for doing the install and were quick to get the old window out, and the new one put in place. It went perfectly, and it looks as good as new. I will use them again any time I have anything glass related 100%. Thanks guys."
My jobs
31 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Harley Exteriors, Inc.
Harley Exteriors, Inc.
4.4(
555
)
Door or Window Screens - Install or RepairEgress Window - InstallNew Window - Single+5 more

Serving Mount Vernon, WA and surrounding areas

Approved (Corporate)

In business since 2002

Free estimates

Warranties offered

Harley Exteriors is a local home improvement company providing premium energy-efficient replacement windows and doors near you in the PNW. We install in residential homes all throughout the Puget Sound Area, from Blaine, Bellingham, Seattle, Snohomish, Woodinville, Bellevue, Kent, Tacoma, Olympia, and surrounding areas. Since 2002, having completed over 21,000 jobs, we?ve become an award-winning window replacement company, earning the Angi Super Service award for the last 12 consecutive years, along with our A+ rating with the BBB. \n

Patio Sliders
Patio Sliders
Patio Sliders
Energy Windows & Doors
Energy Windows & Doors

+25

Recommended by94%of homeowners
Avatar for Champion Window Company of Seattle
Champion Window Company of Seattle
4.0(
17
)
New Windows - 6 +New Windows - 3-5

Serving Mount Vernon, WA and surrounding areas

Approved (Corporate)

In business since 1953

Free estimates

Credit card accepted

"Four of the five windows ordered were fine. One window did not fit (by wide margin) due to measuirement error. Champion has not shown any of the expected urgency about correcting the problem."
16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Rusty's Window Cleaning
Rusty's Window Cleaning
5.0(
5
)
Window Cleaning

Serving Mount Vernon, WA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

Dedicated to customer satisfaction, we uphold a commitment to excellence and never compromise on quality. We persist until you are not just satisfied but thrilled with our work. Our primary aim is to deliver exceptional service at a reasonable price. \n \nTake advantage of our discounts, available for bundled services, referrals from friends or neighbors, and sometimes just for being awesome. We appreciate your loyalty!

Before
After
window cleaning
After
Before

+1

Avatar for Gaspar Services
Gaspar Services
4.5(
71
)
Window Glass - Install or Replace

Serving Mount Vernon, WA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Johnny is who did our exterior door install. He was very nice on the phone and in person. He was also very professional and knowledgeable. Would highly recommend and will use again in needed for additional projects."
After!
Composite deck
New kitchen
New living room
Doors

+58

Response time1 day
5 neighbors recently requested a quote
Recommended by86%of homeowners
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Windows FAQs, answered by experts

Hopper windows aren’t flawless when it comes to keeping rain and debris out of your house because if there’s wind pushing the precipitation, it could easily get in through the open space. On top of that, hopper windows aren’t potential escape routes the way regular windows are in case of a fire or emergency. If that’s a priority or need, it’s something to consider when choosing a window type.

If you live in a colder region, consider installing double- or triple-pane windows with low-E coatings, which can trap heat and keep your house warm. In hot areas, windows with reflective coatings and insulated frames help keep cooling costs down. If you experience a lot of extreme weather, then impact-resistant glass might be a worthwhile investment. 

The maximum protruding distance allowed for a bay window is determined by its flank angles. 30-degree flanks can extend about 13 to 14 inches. If the angle is 45 degrees or larger, then the bay window can stick out about 19 inches. If the window extends too far out, it would cause structural instability and safety concerns.

Window cleaning depends on how the cleaning service defines their deep cleaning tasks, so pay attention to the details. You certainly should make sure window cleaning is included in the package. Some services will include it as an add-on, so you may have to pay extra. Find out if the cleaning includes interior windows only, or interior and exterior windows. Exterior windows may cost more.

Basements are generally required to have windows for your safety. At a minimum, windows should provide an egress in the event of a fire. But basement windows do more than offer a way out; basement windows also offer natural light and ventilation in an area of your home that is otherwise dark and musty.

The Mount Vernon, WA homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.