20 Best Window Companies in London, OH (2025 Reviews)

How Installing Energy-Efficient Windows in London Saves You Money

When you upgrade to energy-efficient windows, you may see some perks, including:

• Reduce your carbon footprint: By using less energy once you switch to Energy Star certified windows, you’ll also be decreasing your carbon dioxide emissions by about 12%, according to Energy Star.
• Protect your investment: If you have a relatively old home, your windows are most likely in need of replacement. Updating your windows can make your home more comfortable and also help raise the value of your property if you decide to sell.
• Save money on energy bills: Installing energy-efficient windows reduces your energy bills by about 12% since you use less energy.
• Protect your valuables from fading: When you upgrade to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.

Estimated Cost of Window Replacement in London

Let’s take a look at the cost of installing new windows and the types of services you may need for your home.

How Much Do New Windows Cost?

Typically, London homeowners can expect their window replacements to range from $250 to $1,200. The average cost sits at around $600. How much it will cost varies depending on several factors, such as the location of your home, size, type, number of windows, material and more.

It’s important to keep in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save London homeowners $299+ a year when replacing single-pane windows.

Requesting free quotes from multiple companies is the best way to find out which one will work best for your budget.

What Services do Window Installers Offer?

When it comes to window installations, in general there are two types that your provider will offer: full-frame and pocket installations.

Full-frame installations involve replacing the total window, including the trim, sill and frame. You most likely need a full-frame installation when you want a new style or your window has significant deterioration. These installations are more involved and will raise overall costs. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this kind of installment if you have any pre-existing rot or water damage.

Your window installation company can help you choose which type of installation you should get.

How We Choose the Best Window Installers in London

EcoWatch reviews are different from other reviews, as we look at these companies through a sustainability lens. We’ve decided to evaluate the top window replacement companies in London mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can reduce your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Because this is a guide for London, we gave more points to companies that cover the city. There are other reputable providers that didn’t make the cut because they wouldn’t be able to serve homeowners in London.

Work Quality

We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each company included in our guide to ensure its technicians are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed patterns in recent customer feedback to determine the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including professionalism, cost, quality of installation, quality of parts, warranty and more.

Cost

Cheaper windows don’t necessarily mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing providers’ prices, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

Protecting your investment in new windows is important. For that reason, window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Because of London’s climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of London window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.