Finding the Best Window Installers
Last updated November 2026
Choosing a good supplier and installer is as important as choosing the right windows. Checkbook receives a disturbing number of complaints—often about sloppy work—from consumers regarding window installation work. Many of these companies advertise heavily on local radio and TV stations.
Review Ratings
The ratings of local window installers we report on our Ratings Tables can help you avoid many problems.
We regularly survey area consumers and ask them to rate window installation and repair companies they’ve used on questions such as “doing work properly,” “promptness,” “letting you know cost early,” “advice on service options and costs,” and “overall quality.” We primarily surveyed Checkbook subscribers, but we also invited other randomly selected consumers to provide ratings. Click here for further description of our customer survey and other research methods.
Our Ratings Tables show the percent of each company’s customers who rated it “superior” (as opposed to “adequate” or “inferior”) on each survey question. Our Ratings Tables also report the percent of surveyed customers who rated each company “adequate” or “superior” (as opposed to “inferior”) for “overall quality.”
As you can see, some window outfits make a lot of their customers unhappy: Some were rated “superior” by fewer than 60 percent of their surveyed customers. But fortunately, we also identified other top-notch businesses.
Check Complaint Histories
Our Ratings Tables also report counts of complaints we gathered from the Better Business Bureau (BBB) for a recent three-year period and complaint rates relative to the volume of work companies do.
Gather Pricing from Several Companies
Cost can vary substantially, depending on which windows you select and who installs them.
The table below indicates the price variation among installation companies when Consumers’ Checkbook’s undercover shoppers gave them the same job specifications and let them decide which brand of windows to use. For each job, the highest-priced company’s quote was several thousands of dollars higher than the lowest one.
You can’t get the same brands of windows from all companies, but even among companies offering the same brand, company-to-company differences of $50 to $100 per window are common.
Our Ratings Tables report our price comparison scores, which show how surveyed companies compared on prices for the jobs we checked. The scores show how each company’s prices compared to the average price for all companies that quoted on the same jobs. We adjusted the price comparison scores so that the average for all the companies is $100. If a company’s score is $110, for example, this means that the company’s prices were, on average, 10 percent higher than the average prices for the same jobs.
To get a good price:
- Have several installers come to your home, measure your windows, recommend a replacement method and a brand and model of window, and quote prices.
- Discuss these recommendations and ask about lower-priced alternatives. If substantially lower prices would be available for less energy-efficient windows, ask the companies to estimate the actual energy savings the more expensive windows will produce—and insist that they provide detailed information on how they calculate these estimates.
- Decide on your final specifications. Call the companies that already provided estimates and others to get their prices for these final specifications. Get written proposals.
- If you are not confident that the quality of the windows themselves is comparable from company to company when the companies quote only on specifications, have the companies quote on a specific brand and model; several companies are likely to quote on some of the same brands and models.
- If you are remodeling, consider having your contractor purchase your windows. Window installation companies are primarily geared to installing replacements.
- Check whether there are local tax incentives or if your utility company offers rebates for installing energy-efficient windows. An excellent resource to find these types of incentives is DSIREUSA.org.
