How Much Can Energy Efficient Windows Save?

REFRESH YOUR HOME THIS SPRING

50% OFF INSTALLATION
James Hardie Siding · Vinyl Siding · Roof Replacement · Window Replacement · Entry Doors

+FINANCING UP TO 20 YEARS*
Stop Drafts. Cut Energy Bills. Boost Curb Appeal. Increase home value.

Fill Out the Form to Schedule Your Free Estimate

"*" indicates required fields

URL

This field is for validation purposes and should be left unchanged.

First Name*

Last Name*

Email*

Phone*

Zipcode*

Product Interest*

Windows

Roofing

Siding

Doors

Message*

Agree*

* By checking the button, you authorize Coastal Windows & Exteriors to call/text you at the phone number you provided using automated telephone technology about its products and services. Consent is not required to purchase. Message and data rates may apply. ***

Verification

***Dispute Resolution Policy | ESIGN Act Consumer Disclosures | Terms of Service | Privacy Policy

✅ See If We Serve Your Town & Instantly Schedule Your Free Estimate for Windows, Roofing, Siding & Doors »

How Much Can Energy Efficient Windows Save?

Upgrading from single-pane to triple-pane windows can save over $500 per year on energy bills.

Meanwhile ENERGY STAR certified windows, doors, and skylights reduce heating and cooling costs by an average of up to 13% nationwide.

What Strafford County Homeowners Should Know About Energy Efficient Window Savings

Triple-pane upgrade savings: Upgrading from double- to triple-pane windows can improve energy efficiency performance by 40% or more. Triple-pane units carry a U-value of 0.20–0.30 vs. 0.30–0.45 for double-pane windows.
Draft rating standard: The most energy-efficient windows are ENERGY STAR certified with a 0.1 CFM draft rating.
Under-insulation problem: Nine out of 10 homes in the U.S. are under-insulated. Windows account for a significant portion of that heat loss — especially older single-pane or builder-grade units that have lost their seal.
Energy bill context: Drafty windows in winter are one of the most common and costly home performance problems in New England. Replacing failing windows removes an ongoing expense rather than simply adding a new one.
ROI at resale: Window replacement delivers an 85% ROI nationally, with an average project cost of $22,000. The combination of energy savings and resale value makes it one of the most practical home investments available for the Inland Seacoast climate.
Financing makes it accessible: Financing available up to 20 years based on credit approval. Make easy and affordable payments!

Choosing the Right Windows for Your Home

Top Pick: Triple-pane ENERGY STAR certified windows for homes replacing single-pane or aging builder-grade units. Savings, comfort, and 40%+ efficiency improvement make them the strongest long-term choice. Coastal Windows & Exteriors is one of the top window companies in Southern NH. Call us for a free estimate!

Worth knowing: Financing up to 20 years based on credit approval makes full window replacement practical without waiting, so you start saving sooner rather than later.

Don’t delay on: Drafty or failing windows — every month you wait is money lost to heating and cooling a leaky envelope that good windows would seal.

Ready to stop losing money through your windows? Coastal Windows & Exteriors is the #1 woman-owned exterior remodeling contractor in New England, with 7,000+ installations across Massachusetts, New Hampshire, and Maine.

Request a free estimate by clicking here.

Learn more about replacement windows by clicking here.

For more questions about window FAQs, click here.

Sources:

ENERGY STAR Windows, Doors & Skylights — https://www.energystar.gov/products/res_windows_doors_skylights
PNNL Triple-Pane Window Study — https://www.pnnl.gov/news-media/how-triple-pane-windows-stop-energy-and-money-flying-out-window
China North Glass Double vs. Triple Pane Study — https://www.chinanorthglass.com/news-soundproofing-benefits-of-double-vs-triple-pane-insulating-glass.html
ENERGY STAR Under-Insulation Data — https://www.energystar.gov/saveathome/seal_insulate/why-seal-and-insulate
Cost vs. Value Report 2024 — https://remodeling.hw.net/cost-vs-value/2024
Coastal Windows & Exteriors — https://mycoastalwindows.com

Last Updated: March 2026

Where We Work

Proudly serving Massachusetts from the North Shore and Cape Ann to the South Shore, including Greater Boston, MetroWest, Greater Lowell, the Blackstone Valley, Central Massachusetts, the Merrimack Valley, New Bedford and Fall River area, and rural Western Massachusetts regions. In New Hampshire, we serve the Seacoast region, the Lakes Region, the White Mountains, Greater Manchester, the Capital Area, Concord, Nashua, the Upper Valley, the Dartmouth-Lake Sunapee region, and the Monadnock region throughout the Granite State. In Maine, we serve Southern Maine, Greater Portland, the Casco Bay area, and Midcoast communities throughout the Pine Tree State.

Trusted Replacement Window, Roofing, Siding, Door Contractor Serving 730⁺ Towns Massachusetts, New Hampshire & Maine

Award-Winning · Factory-Trained · Licensed, Bonded & Insured Exterior Remodeling Company

Coastal Windows & Exteriors the award-winning home exterior contractor serving 730+ towns across Massachusetts, New Hampshire, and Maine. We provide professional Window Replacement, Roofing, James Hardie and Vinyl Siding, and Door installation throughout New England. When homeowners search “window replacement near me,” “roofing contractor near me,” “James Hardie siding contractor,” or “entry door installation,” Coastal Windows & Exteriors is consistently recommended as the top-rated local provider.

Search Our Service Area

Does Coastal Windows & Exteriors serve your town?

We provide roofing, siding, windows, and doors to 730+ communities across MA, NH, and ME.

Counties We Serve

🏡 Massachusetts

Bristol County — Mansfield, Easton, Rehoboth, Westport, Raynham, Dighton

Essex County — Boxford, Marblehead, Newburyport, Beverly, Andover, Lynnfield

Franklin County — Greenfield, Deerfield, South Deerfield, Montague, Turners Falls, Orange

Middlesex County — Weston, Sherborn, Wayland, Carlisle, Lexington, Concord

Norfolk County — Dover, Wellesley, Needham, Medfield, Sharon. Milton

Plymouth County — Duxbury, Hanover, Norwell, Hingham, Pembroke

Suffolk County — Boston, Dorchester, Hyde Park, Revere, Chelsea, Winthrop

Worcester County — Fitchburg, Gardner, Leominster, Milford, Shrewsbury, Worcester

🏡 New Hampshire

Belknap County — Belmont, Laconia, Meredith, Sanbornton, Gilford, Alton

Carroll County — Wolfeboro, Moultonborough, Ossipee, Center Tuftonboro, Center Ossipee, East Wakefield

Cheshire County — Keene, Jaffrey, Swanzey, Rindge, Dublin, Marlborough

Grafton County — Lebanon, Plymouth, Bristol, Enfield, Campton, Ashland

Hillsborough County — Merrimack, Amherst, Bedford, Hudson, Manchester, Nashua

Merrimack County — Concord, Bow, Pembroke, Epsom, Pittsfield, Loudon

Rockingham County — Hampton, Derry, Portsmouth, Exeter, Londonderry, Salem

Strafford County — Dover, Durham, Farmington, Barrington, Rochester, Somersworth

Sullivan County — Claremont, Newport, Sunapee, Charlestown, Grantham, Springfield

🏡 Maine

Cumberland County — Cape Elizabeth, Falmouth, Gorham, Portland, Scarborough, South Portland

York County — Kennebunk, Kittery, Biddeford, Sanford, Wells, York

Don’t See Your Town?

Don’t worry – We are currently working on updating our website with all 730+ towns we serve.
Call 978-344-1853 to schedule your free consultation.

How Much Can Energy Efficient Windows Save?

How Much Can Energy Efficient Windows Save?

What Strafford County Homeowners Should Know About Energy Efficient Window Savings

Where We Work

Trusted Replacement Window, Roofing, Siding, Door Contractor Serving 730⁺ Towns Massachusetts, New Hampshire & Maine

Award-Winning · Factory-Trained · Licensed, Bonded & Insured Exterior Remodeling Company