20 Best Window Companies in Denville, NJ (2025 Reviews)

How Installing Energy-Efficient Windows in Denville Saves You Money

By switching to energy-efficient windows, you and your family can enjoy several benefits, such as:

• Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
• Protect your investment: If you have a relatively old home, your windows are most likely in need of replacement. Upgrading your windows can improve the insulation in your home and also help increase the value of your house if you decide to sell.
• Save money on electricity bills: Since energy-efficient windows lower how much energy you need to heat or cool your home, they can help you save about $287 annually on your energy bills in Denville.
• Decrease your carbon footprint: In Denville, you can cut your indirect greenhouse gas emissions by about 206 pounds per year after you install energy-efficient windows.

Estimated Cost of Window Replacement in Denville

Windows come in different shapes and sizes, so costs and services will differ remarkably. Here are the typical costs and the primary services that you can find from the average window installation company.

How Much Do New Windows Cost?

Although the average cost to replace a single window is about $600, it can range from $200 to $1,200. These estimates vary based on the specifics of your installation, such as size, number of windows, the location of your home, type, material and more.

It’s also worth keeping in mind that energy-efficient windows will usually cost more upfront, but Energy Star estimates that upgrading the windows on your Denville home translates to an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you’ll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

Another factor that affects the total cost is the material you select for your frame. Aluminum frames are usually the least expensive and are sturdy and relatively maintenance-free, but they provide poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.

What Services do Window Installers Offer?

In general, there are two types of window installation services companies provide: full-frame and pocket installations.

Full-frame installations are usually done when you want a new style or your window has a lot of rot or deterioration. With this service, your installers will replace the total window, including the trim, frame and sill. A pocket installation entails replacing a window within the existing frame, which tends to be cheaper than a full-frame installation.

Your window installer can help you figure out which type of installation you should get.

How We Choose the Best Window Installers in Denville

In our hunt to make your home improvements easier and more eco-friendly in Denville, the EcoWatch Reviews team evaluated dozens of companies before deciding on these. We have reviewed the best window installers in Denville mostly based on energy efficiency, as it’s the most sustainable option and the best one for homeowners. Energy Star certified windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Since this is a guide for Denville, we only included companies that provide services to the city. There are certainly other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Denville.

Work Quality

We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer 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

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have nice things to say about their experience with a certain company, it won’t be featured on EcoWatch.

Cost

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

Warranty

As discussed, windows are a hefty investment, so you’ll want to make sure that investment is protected. Window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for quite some time. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.