Lowcountry Window Replacement
Double hung windows on a coastal South Carolina home
Windows
Double Hung
Simonton Authorized Dealer

Double Hung Window Replacement in Charleston & the Lowcountry

Featuring Simonton's 5500 Collection and StormBreaker Plus® - timeless design, easy cleaning, and outstanding ventilation engineered for South Carolina's coastal climate.

Authorized Simonton Dealer

We install Simonton windows - one of America's most trusted vinyl window brands for over 75 years.

75+
Years Manufacturing
4.7★
Customer Rating
AAMA
Gold Certified
ENERGY★
STAR Qualified
About Double Hung Windows

Classic Style, Modern Performance

Double hung windows are the most popular replacement window style in the country - and for good reason. With both the top and bottom sash operable, you get maximum ventilation flexibility. Open the bottom for fresh air, the top to let heat escape, or both for a natural breeze through your home.

We install Simonton's industry-leading vinyl windows, built with fusion-welded frames and a 16-chamber sash design that maximizes insulation. Simonton's proprietary Simonton Sill® features a 10° triple-stepped slope that accelerates drainage and whisks water away even during heavy Lowcountry downpours.

Both sashes tilt inward for easy cleaning from inside your home - no ladders, no hassle. Whether you're in a single-story bungalow on Sullivan's Island or a two-story home in Mount Pleasant, Simonton double hung windows make maintenance simple and keep their beauty for decades.

Simonton double hung windows installed in a coastal South Carolina dining room
Simonton Features

Built for the Lowcountry

Every Simonton double hung window is custom-built to exact size and backed by a Lifetime Limited Warranty.

Both top and bottom sash slide vertically for maximum ventilation flexibility
Tilt-in sashes for easy cleaning from inside your home - no ladders needed
Fusion-welded frame and sash for superior weather resistance and durability
ProSolar® Low-E glass with Argon gas fill for energy efficiency
3/4" stainless-steel constant force balance system for smooth operation year after year
16-chamber frame and sash design maximizes insulation and interior comfort
Triple-fin weatherstripping virtually eliminates air and water infiltration
Dual cam locks with Air Loks™ for safety and security
Simonton Sill® 10° triple-stepped slope accelerates drainage in heavy rain
Available with SafePoint® impact-resistant glass for coastal storm protection
Wide range of colors, grille patterns, and hardware finishes
Custom-built to exact size for a perfect fit - no filler strips
Lifetime Limited Warranty on vinyl, hardware, and glass
AAMA Gold Certified and ENERGY STAR® qualified
Simonton Collections

Choose Your Collection

We offer two Simonton double hung collections to match your home's needs and budget.

Simonton 5500

Most Popular

The flagship collection. Traditional beveled frame design with superior strength, advanced energy efficiency, and exclusive features. Recognized with the Good Housekeeping Seal for quality and performance.

  • Good Housekeeping Seal recipient
  • ENERGY STAR® Most Efficient certified
  • 9 exterior colors + interior woodgrain options
  • Triple-pane glass available

StormBreaker Plus®

Coastal Impact

Hurricane-rated impact protection engineered specifically for coastal living. SafePoint® Max laminated glass guards against hurricane-force winds and windborne debris without the need for shutters.

  • Certified Missile D impact rating
  • SafePoint® Max laminated glass
  • 50% sound reduction (STC 35)
  • Deflects 99% of UV rays
Why Simonton

America's Most Trusted Window Brand

Good Housekeeping Seal

The 5500 Double Hung received the Good Housekeeping Seal for quality and safety.

AAMA Gold Certified

Every window is verified to meet industry-leading AAMA Gold Certification standards.

ENERGY STAR® Most Efficient

Select 5500 styles with triple-pane glass earn the Most Efficient ENERGY STAR designation.

Lifetime Limited Warranty

Backed by a comprehensive Lifetime Limited Warranty on vinyl, hardware, and glass.

FAQ

Double Hung Window FAQs

Ready for New Simonton Double Hung Windows?

Get a free in-home estimate from the Lowcountry's most trusted Simonton window dealer.