23 Best Window Replacement Companies in Gilmanton, NH (2023 Reviews)
Window Companies Near Me
Are you thinking about upgrading your windows? Our guide to the best window installation companies can help you narrow down which one to pick.
We analyzed all the top window installers in Gilmanton and selected the top 23 based on:
-
Customer reviews
-
Window replacement expertise
-
Popularity with home-owners like you
Please enter a valid 5-digit zip code!

Updated May 04, 2023
Why you can trust EcoWatch
Although green energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home's energy efficiency can also have a considerable impact on home energy conservation. Damaged or outdated windows can cost you in energy bills. In fact, the Department of Energy estimates that 25-30% of your house's heat or cool air could be lost through your windows.
Replacement windows improve the insulation in your home, not only making you and your family more comfortable during the summer and winter, but also saving you some money and helping the environment.
We've put together this guide on the best installation companies to help you in your search, so you can not only take advantage of brand new windows, but also save money on your power bills.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best for Businesses
Aeroseal Windows
- Great industry reputation
- Custom Designs
- Manufactures products in-house
- No lifetime warranty
Best Window Replacement Companies in Gilmanton
The EcoWatch team assessed dozens of window installation companies across Gilmanton to narrow our list down to the top ones. The providers in this article passed our review standards for energy-efficient offerings as well as customer service, price, local expertise and beyond.

Window World
-
Low prices relative to competitors
-
EnergyStar Partner
-
Lifetime warranty
-
Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. This window installation company has been in business since 1995 and currently services 200 locations nationwide.
You may want to consider picking Window World if you're looking for a installer that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsThere are a wide range of window types that Window World offers, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Gilmanton?Window World does not list prices on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to receive a free quote from the company.

Renewal by Andersen
-
Great industry reputation
-
Member of US Green Building Council
-
Manufactures products in-house
-
No lifetime warranty
Renewal by Andersen provides the best availability in Gilmanton. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the window installation industry, and it has established itself as one of the most respected companies in Gilmanton. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, Andersen may be the company for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen appeals to eco-conscious consumers by providing energy-efficient window offerings. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Gilmanton?Andersen doesn't have any cost information displayed on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you'd like more accurate information, you can receive a quote on the company's website.

Aeroseal Windows
-
Great industry reputation
-
Custom Designs
-
Manufactures products in-house
-
No lifetime warranty
Aeroseal Windows provides the best window installation for businesses in Gilmanton. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. This company has been in business since 1999 and currently services 13 states and Washington D.C. The provider has hundreds of glowing reviews from customers online.
Aeroseal may be the company for you if you're interested in one that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows' commitment to sustainability can be seen in its energy-efficient window offerings. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.
How much does Aeroseal Windows cost in Gilmanton?Prices aren't displayed on Aeroseal's website, but it provides high-quality windows at a competitive price point. If you'd like to know for sure, you can get a quote on the company's website.

Universal Windows Direct
-
Makes charitable contributions
-
Manufactures products in-house
-
Wide variety of products and services
-
Lifetime warranty
-
Limited service area
-
Some installations carried out by third-party contractors
-
Quality of service will depend on your area
Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has about 20 years of experience in the window replacement sector. Its reputation is backed by a considerable amount of positive reviews from customers online.
You may want to consider opting for Universal if you're interested in a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThere are a wide range of window types available from Universal Windows Direct, some of which are Energy Star products. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Gilmanton?Universal does not detail prices on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. If you'd like to know for sure, you can receive a quote on the company's website.
We've recommended installers with shining reputations, but keep in mind these are national companies, so your service may vary depending on your local crew. We have tried to be unbiased and transparent by listing pros and cons for every company we reviewed.
More Window Replacement Companies in Gilmanton
Nashua Glass
Nashua, NH-
Good Customer Service
-
Award-Winning
-
Price Transparency
-
Educational Website
-
Free assessment
Services Offered
-
Sliding Glass
-
Glass Showers
-
Fast Delivery
-
Commercial Windows
-
Tempered Glass
-
Double-Hung
-
Custom Window Designs
-
Residential Windows
Clear Choice Home Improvements
Manchester, NH-
Price Transparency
-
Timely Service
-
Free assessment
-
Good Customer Service
-
Award-Winning
Services Offered
-
Commercial Windows
-
Residential Windows
-
Sliding Glass
-
Glass Showers
-
Custom Window Designs
-
Double-Hung
-
Bay Windows
-
Fast Delivery
Marquis Roofing
Manchester, NH-
Award-Winning
-
Price Transparency
-
Educational Website
-
Good Customer Service
-
Free assessment
-
Timely Service
Services Offered
-
Commercial Windows
-
Fast Delivery
-
Stained Glass
-
Double-Hung
-
Residential Windows
-
Custom Window Designs
Accurate Glass Crafters LLC.
Haverhill, MA-
Good Customer Service
-
Price Transparency
Services Offered
-
Double-Hung
-
Tempered Glass
-
Stained Glass
-
Full-Service Installations
-
Residential Windows
-
Commercial Windows
-
Sliding Glass
-
Glass Showers
-
Custom Window Designs
-
Fast Delivery
Window World of New Hampshire
Manchester, NH-
Free assessment
-
Good Customer Service
-
Educational Website
-
Award-Winning
-
Price Transparency
Services Offered
-
Fast Delivery
-
Residential Windows
-
Custom Window Designs
-
Double-Hung
-
Bay Windows
-
Sliding Glass
Budget Blinds of the Seacoast
Portsmouth, NH-
Educational Website
-
Free assessment
-
Good Customer Service
Services Offered
-
Commercial Windows
-
Energy-Efficient Options
-
Aluminum Window Frames
-
Fast Delivery
-
Residential Windows
-
Glass Showers
-
Custom Window Designs
M&M Skylights
Brentwood, NH-
Timely Service
-
Good Customer Service
-
Price Transparency
-
Free assessment
Services Offered
-
Glass Showers
-
Commercial Windows
-
Residential Windows
-
Fast Delivery
-
Custom Window Designs
-
Double-Hung
-
Energy-Efficient Options
The Window Source NH
Seabrook, NH-
Educational Website
-
Award-Winning
-
Price Transparency
-
Good Customer Service
-
Free assessment
Services Offered
-
Energy-Efficient Options
-
Residential Windows
-
Bay Windows
-
Double-Hung
-
Sliding Glass
-
Custom Window Designs
Northfield Handyman Services
Haverhill, MA-
Educational Website
-
Good Customer Service
-
Price Transparency
-
Free assessment
Services Offered
-
Residential Windows
-
Fast Delivery
-
Glass Showers
-
Double-Hung
-
Custom Window Designs
Dependable J M R Siding
Manchester, NH-
Free assessment
-
Educational Website
-
Price Transparency
-
Good Customer Service
Services Offered
-
Commercial Windows
-
Custom Window Designs
-
Fast Delivery
-
Residential Windows
-
Double-Hung
-
Sliding Glass
Glass Unlimited
Wells, ME-
Good Customer Service
-
Price Transparency
-
Timely Service
-
Free assessment
Services Offered
-
Full-Service Installations
-
Custom Window Designs
-
Fast Delivery
-
Commercial Windows
-
Aluminum Window Frames
-
Residential Windows
-
Sliding Glass
-
Glass Showers
Portland Glass of Hooksett/Manchester
Hooksett, NH-
Price Transparency
-
Good Customer Service
-
Educational Website
-
Free assessment
-
Timely Service
Services Offered
-
Residential Windows
-
Double-Hung
-
Glass Showers
-
Custom Window Designs
-
Commercial Windows
Portland Glass of Springvale & Sanford
Springvale, ME-
Price Transparency
-
Educational Website
-
Free assessment
-
Good Customer Service
Services Offered
-
Fast Delivery
-
Commercial Windows
-
Double-Hung
-
Residential Windows
-
Glass Showers
-
Custom Window Designs
Pella Windows & Doors of Newington
Newington, NH-
Good Customer Service
-
Price Transparency
-
Educational Website
-
Free assessment
Services Offered
-
Fast Delivery
-
Double-Hung
-
Bay Windows
-
Sliding Glass
-
Custom Window Designs
-
Residential Windows
Minuteman Floors
Manchester, NH-
Free assessment
-
Price Transparency
-
Timely Service
-
Educational Website
-
Good Customer Service
Services Offered
-
Custom Window Designs
-
Sliding Glass
-
Residential Windows
-
Commercial Windows
-
Glass Showers
Home Services at The Home Depot
Somersworth, NH-
Good Customer Service
-
Price Transparency
-
Free assessment
-
Educational Website
Services Offered
-
Stained Glass
-
Bay Windows
-
Glass Showers
-
Fast Delivery
-
Aluminum Window Frames
-
Commercial Windows
-
Custom Window Designs
-
Residential Windows
Home Services at The Home Depot
Tilton, NH-
Price Transparency
-
Free assessment
-
Educational Website
-
Good Customer Service
Services Offered
-
Stained Glass
-
Fast Delivery
-
Custom Window Designs
-
Bay Windows
-
Commercial Windows
-
Glass Showers
-
Residential Windows
-
Double-Hung
Universal Windows Direct of Manchester
Manchester, NH-
Free assessment
-
Award-Winning
-
Good Customer Service
-
Educational Website
-
Price Transparency
Services Offered
-
Commercial Windows
-
Sliding Glass
-
Energy-Efficient Options
-
Residential Windows
-
Custom Window Designs
Home Services at The Home Depot
Methuen, MA-
Good Customer Service
-
Educational Website
-
Price Transparency
-
Free assessment
Services Offered
-
Glass Showers
-
Fast Delivery
-
Bay Windows
-
Stained Glass
-
Double-Hung
-
Custom Window Designs
-
Commercial Windows
-
Residential Windows
Home Services at The Home Depot
Claremont, NH-
Price Transparency
-
Good Customer Service
-
Educational Website
-
Free assessment
Services Offered
-
Residential Windows
-
Commercial Windows
-
Glass Showers
-
Aluminum Window Frames
-
Fast Delivery
-
Custom Window Designs
-
Bay Windows
-
Stained Glass
Pane Free Glass
Manchester, NH-
Good Customer Service
-
Free assessment
-
Price Transparency
-
Educational Website
Services Offered
-
Sliding Glass
-
Glass Showers
-
Residential Windows
-
Full-Service Installations
-
Custom Window Designs
-
Fast Delivery
-
Commercial Windows
Corporate Office for Pella of Boston
Haverhill, MA-
Good Customer Service
-
Free assessment
-
Price Transparency
-
Educational Website
Services Offered
-
Commercial Windows
-
Energy-Efficient Options
-
Bay Windows
-
Double-Hung
-
Residential Windows
-
Custom Window Designs
-
Sliding Glass
Stone Coast Remodeling
Standish, ME-
Free assessment
-
Good Customer Service
-
Educational Website
-
Price Transparency
Services Offered
-
Custom Window Designs
-
Stained Glass
-
Double-Hung
-
Residential Windows
-
Glass Showers
-
Fast Delivery
How Installing Energy-Efficient Windows in Gilmanton Saves You Money
When you switch to energy-efficient windows, you may see some perks, including:
- Save money on energy bills: Installing energy-efficient windows reduces your energy bills by about 12% because you use less energy.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can reduce your carbon footprint by about 12%, according to Energy Star.
- Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Upgrading your windows could help raise the value of your home if you decide to sell.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
Estimated Cost of Window Replacement in Gilmanton
Let's go over the cost of window installation and the kinds of services you may need for your home.
How Much Do New Windows Cost?
According to our market research, the typical cost of installing a single window is around $600. However, window installation costs can range from $200 to $1,200 per window. Costs will vary significantly based on the quality of your products, the current condition of your home, the number of windows you need and your location. Many window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. These extra services will increase overall project costs.
Keep in mind that energy-efficient windows may come at a higher price point, but Energy Star estimates the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.
How much your window installation costs will also vary depending on the kind of material you choose for the frames. Wood windows are usually the most expensive, although it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
There are generally two kinds of window installation services: full-frame and pocket installations.
A full-frame installation is a replacement of the total window. This service involves taking out the old window, the windowsill, and the exterior and interior trim. It also involves other materials, including insulation and drip edges, which increase the overall cost of the project. It's also worth noting that it's not uncommon for homeowners to have to touch up the paint around the window after a full-frame installation. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations take less time and therefore cost less. But, if the frame has any damage or rot, you should opt for a full-frame installation instead.
Your window installation company should be able to help you choose which type of installation you need.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best for Businesses
Aeroseal Windows
- Great industry reputation
- Custom Designs
- Manufactures products in-house
- No lifetime warranty
How We Choose the Best Window Installers in Gilmanton
In our search to find the most reliable, eco-friendly window installers in Gilmanton, the EcoWatch team examined dozens of companies before settling on these. Along with energy efficiency, we evaluated several window installers in Gilmanton and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve Gilmanton so you can find the best window installation company near you.
Work Quality
When selecting new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the brand you get. We do give window installers more points if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across nearly every category, including warranty, quality of parts, quality of installation, cost, professionalism and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed, windows are a substantial investment, so you'll want to make sure that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installation companies that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Gilmanton, NH Window Replacement FAQs
What is the average cost to install windows?
The national average cost of installing a window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is typically dependent on the size of the window, the location of your property and the type and material of the window. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What kind of window is the most energy-efficient?
Generally, double-pane windows will be more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you're getting the most energy-efficient windows, look for models that have the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.
What services do window installation companies offer?
Window installation professionals cover the entire process — from replacing old windows with new ones to cleaning up afterward. In addition, a lot of companies offer window manufacturing, customization and repairs.
How often should you replace your windows?
Windows generally have a lifespan of around 20 to 30 years, but anytime you notice damage on your windows, it's a good idea to have them looked at by an expert to determine if they are in need of a repair or replacement.
Should I replace all my windows at the same time?
If your windows are greater than 20 years old, you most likely need to replace all of them. By that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less stress.