*The Angi rating for Window Service companies in Grantham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.
*The HomeAdvisor rating for Window Service companies in Grantham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.
Last update on May 19, 2026
Serving Grantham, NH and surrounding areas
Approved (Corporate)
In business since 2000
Free estimates
Warranties offered
"Installed 22 new windows, 2 entry doors, and new sliding glass door. Outstanding service, price, and installation. Highly recommend."
+55
Serving Grantham, NH and surrounding areas
Approved (Corporate)
In business since 2011
Free estimates
Credit card accepted
"Nikiya came to my home to help me choose windows to replace old windows that are leaking cold air in winter. With the price of oil this year, it is worth the money to do this work. His presentation was very well done, with demonstrations that help me to choose the windows for our home. Nikiya was friendly and extremely knowledgeable about his products, and I appreciate that."
Serving Grantham, NH and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Small jobs welcome
"Adam, from Sidewinder, was willing to come from a relatively far distance to do this job. He was able to efficiently evaluate the problem, and hire the appropriate parts to complete the project. I found him to be knowledgeable, easy to work with, reliable, and reasonably priced."
+15
Serving Grantham, NH and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"The four-man crew was very professional, and very clean and neat. They performed the work on a very timely basis and my new triple pane windows look great."
Serving Grantham, NH and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Super responsible and reliable, great lawn and snow work."
+3
Serving Grantham, NH and surrounding areas
Approved (Corporate)
In business since 1996
Free estimates
Warranties offered
"Everything completed as rescheduled after a weather delay. The crews arrived on time, did the project (2 foundation Cracks, and cleaned up"
+16
Serving Grantham, NH and surrounding areas
Approved
In business since 1989
Free estimates
Warranties offered
"HAD egress window installed, excellent quality work at a fair price on schedule. Very professional."
+3
Serving Grantham, NH and surrounding areas
Approved
In business since 1999
Free estimates
Credit card accepted
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of window projects and specialize in multiple window instillation for residential homes. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
Serving Grantham, NH and surrounding areas
Approved
Small jobs welcome
I'm currently looking for some fill in work for this winter. I'm a very capable carpenter/painter. I have full time work Monday through Friday, but have some availability on weekends.
+2
Serving Grantham, NH and surrounding areas
Approved
Free estimates
Small jobs welcome
"Adam and his team did an amazing job on completing a backyard fence for my family. He was hardworking and detailed with the work. Kept me updated through every step of the way from the permit process, ordering materials and check-ins as the build was happening. Our fence is great! He also completed a custom railing and gate to attach to our existing deck. Will definitely be using we do it all again for future projects."
If you have a problem with your window, such as broken glass, minor leaks, or a problem with your window being stuck, repairing the broken part might be a cheaper option than replacing the entire window. However, if you have a deteriorating window frame or major leaks, buying a new window will be the better long-term solution.
Window replacement can become costly, especially if you’re replacing your whole home. There are a few steps you can take to help save money on the bottom cost while still giving your windows a facelift.
Replace multiple windows at once to bundle your purchase
Inquire about discounts, coupons, or special offers
Consider window repair as soon as you see damage to help prevent the need for replacement
Maintain your windows often by inspecting your windows for drafts, leaks, and cracks
There are certain window repairs that are cost-effective to DIY and relatively simple for homeowners to tackle themselves. Tasks like replacing a screen, replacing a lock, or sealing a window are typically under $30 and take minimal time to do yourself. However, if you need to replace your window or repair a broken double pane, it’s best to call in a professional window replacement installer to lend a hand. Replacing the majority or all of the windows in your home is a time consuming job and best left to a professional.
Window replacement costs between $180 and $410 per window, or an average of $280 per window. However, your specific replacement job could cost as little as $100 or as much as $750. Factors such as frame material, the number of windows you need, and the type of glass you order all impact the overall cost. For example, simple double-glazed windows will cost $3 to $6 per square foot, but the stronger tempered glass ranges from $12 to $14 per square foot.
The time it takes to replace a window is a total of four to 15 weeks. This time includes your initial consultation, appointments for measuring, as well as ordering and manufacturing your windows. For a smaller job, you can expect the total timeline to be on the shorter end, but for a whole house window replacement, it might take longer (or be split into multiple install appointments). Once your windows are created and ready to be installed, your window installer will take 30 to 60 minutes per window to install.
From average costs to expert advice, get all the answers you need to get your job done.
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Learn how much triple-pane windows cost, exploring common cost factors such as their size, type, location in your home, and design.
Wooden windows elevate a home’s curb appeal and have a lifespan of up to 45 years. Learn about the cost of wooden windows and how to get an estimate.
If it's time to replace or install a new window, you have plenty of stylish options. Here are 15 types of windows and the best place for each one in your home.
Understanding standard window sizes is easy once you get the hang of it. Here's how to order windows just like the pros.
What are low-E windows? Read this guide to find out and learn how they can improve your home’s energy efficiency—or if you’re better off with an alternative.
