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TRUSTED BY MONROVIA, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon128
    Verified window services reviews

Top-Rated Window pros in Monrovia - Updated Nov 2026

Avatar for Metropolitan High Performance Windows
Metropolitan High Performance Windows
4.7(
215
)
New Windows - 6 +New Windows - 3-5New Window - Single+9 more

Serving Monrovia, CA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"This is my second window job with MHP. First time, we upgraded a dozen windows in our home with a high-end product. Everything went perfectly. When I needed replacements in my rental I was looking for value. MHP beat the price of 2 other bids with a better product. Paul and Cathy are true professionals from the first contact to job completion."
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+9

22 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Clearview Mobile Screens
Clearview Mobile Screens
4.9(
71
)
Door or Window Screens - Install or Repair

Serving Monrovia, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"I called Pablo on Monday and left a message. He called me right back. He was very friendly and said he could fit me in between a couple of other jobs on Wednesday. He called me on Wednesday when he said he would, told me he could get to my house in half an hour and was. He measured the windows, set up his work station right from his van, and had made them within a half an hour. Everything fit. He was so nice, personable, professional, helpful. And took my credit card! Great job!"
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Response time10 hrs
Response rate100%
Recommended by94%of homeowners
Avatar for Clear Glass
Clear Glass
5.0(
18
)
Window Cleaning

Serving Monrovia, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Customers say: True professional

"After 20 years of neglect on my part, the windows in my house are now unbelievably clear thanks to the work of Justin and José from Clear Glass. I can recommend them without reservation. The two men did a first-class job washing the windows and cleaning the screens and the windowsills, both inside and outside. When I pointed out to Justin that two of the windows were particularly dirty, he told me that the dirt was actually discoloration caused by an issue with the argon gas insulation between the double-panes. He then told me that I should ask the manufacturer to replace the two damaged windows. In addition, José realigned three of the windows that had come off the tracks on either side of the panes. The cost of the job was very competitive, especially considering the time it took to remove so much dirt. Justin also gave me a seven-day guarantee to come back and redo anything that he had missed or that needed attention. (I did not need to take advantage of that service.)"
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+17

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Brothers Home Improvement Inc
Brothers Home Improvement Inc
4.6(
71
)
New Windows - 3-5New Windows - 2New Window - Single+9 more

Serving Monrovia, CA and surrounding areas

Approved (Corporate)

In business since 1994

Free estimates

Warranties offered

"Fantastic. Everyone from start to finish was super professional and super friendly. The sales/estimate and measurement guys both did a great job explaining things to us, the windows look great and fit perfectly (already got compliments on them), and the guys installing the windows were all very respectful about keeping from making a big mess. Everyone we dealt with had great attitudes; they worked hard but were so friendly it felt like they were just friends helping out. Great service overall, much better than another place we checked out earlier, and the price was actually much more reasonable, too."
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+2

Response time11 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Window Wizards
Window Wizards
5.0(
9
)
Window Cleaning

Serving Monrovia, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"Window Wizards did an excellent job. They pressure washed my driveway, walkway, back patio, and also washed and cleaned my patio doors. Window Wizards was very professional and did a thorough job and I would definitely hire them again and refer them to others."
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+3

2 neighbors recently requested a quote
Recommended by100%of homeowners
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Windows FAQs, answered by experts

Yes, window manufacturers and installers can mull together three windows—or even more—for a more impressive appearance that lets maximum natural light into your home. However, you may have constraints regarding the total size of the wall opening. Your installer can help you determine what size wall opening is safe based on the structural load. In most cases, you can install additional supports to span the opening, like a steel I-beam, but this drastically increases the installation cost.

The best time to remove and restore old windows is during temperate weather. Late spring and the early onset of winter are ideal seasons. While summer has its challenges (e.g., bugs, heat, and dust), it’s also a good time to do restoration work. The worst time to restore old windows is during the winter, especially if it is particularly cold and snowy.

Mulled windows are no less efficient than individual windows, provided the wall opening is the same size. Larger wall openings filled with glass will always reduce overall energy efficiency, as glass transmits heat more readily than a solid wall. If the windows that are mulled together have the same square footage as individual windows, you might actually see a small decrease in your electric bills, as mulled windows let in more natural light that can reduce interior lighting costs.

Storm windows have about the same life span as standard windows—between 20 and 30 years. Vinyl and wood storm windows last longer than aluminum, but they all fall within that life span range. Of course, how long your storm windows last will depend on how much severe weather they see. Direct impacts, in particular, can quickly reduce how long your storm windows last.

Casement window types differ from standard windows in that they have a hinge on the side or the top of the window so that it can open inwards or outwards. If your casement windows open upward, they usually have a crank to operate them. Casement windows with side hinges typically operate like a door, opening and closing without a crank.

The Monrovia, CA homeowners’ guide to window services

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