Which windows are most energy efficient?

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Which windows are most energy efficient?

Triple pane windows are most energy efficient for New England homes. They can save over $500 annually on energy bills compared to single pane windows.

ENERGY STAR-certified windows with specific features deliver maximum performance in Massachusetts, New Hampshire, and Maine climates.

What New England Homeowners Need to Know:

Triple Pane Technology: When homeowners upgrade from double to triple pane windows, energy efficiency performance improves by 40% or more. Triple pane windows achieve U-values of 0.20-0.30 compared to double pane U-values of 0.30-0.45.

Double Pane Performance: Double pane windows offer solid energy efficiency for most applications with argon or krypton gas fill enhancing thermal performance without significant cost increases.

ENERGY STAR Certification: Installing ENERGY STAR-certified windows, doors, and skylights lowers energy bills by up to 13% on heating and cooling costs. Meanwhile, Energy Star-certified windows offer a savings of over $500/year.

Advanced Window Features: Low-E coatings and argon gas fill work together to achieve R-values of 3.0-4.0 compared to single pane R-values of 0.9, dramatically reducing heat transfer through glass surfaces.

Energy Efficient Window Comparison:

Window Type	U-Value	Noise Reduction	Best For	Annual Savings*
Triple Pane	0.20-0.30	40-50%	Maximum efficiency, harsh climates	$500+
Double Pane	0.30-0.45	30-35%	Balanced performance, most homes	$300-400
Single Pane	0.90-1.10	Minimal	Replacement needed	Baseline

Window Efficiency Recommendations:

Top Choice Overall: Triple pane windows with argon or krypton gas and CFM rating of 0.1 for New England homes facing harsh winters and temperature extremes

Best for Budget: Double pane ENERGY STAR-certified windows offering 70-80% of triple pane performance at 50% of the cost with solid energy savings

Best for Coastal Homes: Triple pane windows with Low-E coatings protecting against salt exposure while maximizing insulation in waterfront locations with strong winds

Ready to Reduce Energy Costs?

Ready to make your home more energy efficient with replacement windows? Coastal Windows & Exteriors installs the most energy-efficient windows available with 7,000+ installations across Massachusetts, New Hampshire, and Maine. Schedule your free consultation today.

Massachusetts/Maine: 236 Cabot St, Beverly, MA 01915 | (978) 344-6792
New Hampshire: 288 State Rte 101, Bedford, NH 03110 | (603) 691-2362

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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.

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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

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