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Installing Energy-Efficient Replacement Windows Made for the Mililani, HI, Climate

Here in Mililani, Hawaii, we have some of the most beautiful views on the planet and plenty of sunny days to enjoy them. But our weather can take its toll on your home’s HVAC system if your windows aren’t able to control thermal transfer. Whether you’d like to make fewer trips to the thermostat or simply want to make a change with your house windows, Diamond Head Windows & Doors is the window contractor to know in our part of Oahu. We install gorgeous replacement windows designed to perform at their best here in Hawaii, and we’ll be happy to show you firsthand why our service is trusted all over the island.

Picture, double-hung, and specialty shape windows installed on blue home with white trim

About Our Replacement Windows

Energy-efficient windows are a dime a dozen these days, but here’s the catch: These windows aren’t all designed to perform equally well in any climate. That’s why it’s important to buy replacement windows that will work where you live, like our signature Leahi’ windows. These windows feature insulated, dual-pane glass filled with Argon gas that prevents thermal transfer—which is when warm air enters or leaves your home to infiltrate cooler spots and equalize the temperature in those areas. By keeping warm air out of your home when you have the air conditioner running, your indoor temperatures will be more consistent and your monthly energy bills could be lowered.

Types of Windows We Install

Diamond Head Windows & Doors installs Leahi’ replacement windows in a variety of popular styles, including:

  • Double hung
  • Single hung
  • Slider
  • Casement
  • Awning
  • Bay and bow
  • Picture
  • Geometric
  • Garden

Anything you buy from us will be custom sized to fit your home, and our in-house window installation professionals will complete your project with the utmost precision and care. In fact, we’re so confident in the quality of their work that we’ll back it with a generous lifetime warranty.

Contact Us Today

Ready to upgrade your Mililani, HI, home with eye-catching, energy-efficient replacement windows? Reach out to Diamond Head Windows & Doors today to get started.

Our 27 windows were installed in 3 days and we could not be more satisfied.
— Gale D.
Hawaii’s Largest Locally Owned Window & Door Replacement Company
Visit Our Showroom Our showroom is open Monday through Friday from 8am - 5pm, Saturday from 9am - 1pm, and on Sunday by appointment.

99-1093 Iwaena St, Bay G Aiea, Hawaii 96701 Get Directions

Proudly Serving the Island of Oahu