C. Costello carries every type of window, every type of glass and a variety of frame materials.  When you work with C. Costello, you are dealing with a licensed, bonded and insured glass replacement contractor with a long track record of working with the elements of New Jersey. We will help you find the windows that will enhance the appeal of your home and give you the energy savings you want.

Energy-efficient window replacement

Energy-efficient replacement windows can save you hundreds on your energy bill.

  • Lower your utility bill. Replacing single-pane windows with Energy-star Low E dual-pane windows can save you $400 a year or more.
  • Increase the value of your home. It’s estimated that you’ll get 70% of the cost of new windows back in increased home value.
  • Enjoy a quieter home. New windows not only keep heat and cold out – they keep noise out. Your home is going to be quieter – much quieter.
  • Keep out dirt and dust. New windows will not only keep your home more comfortable – they’ll keep it cleaner.
  • Protect your belongings. In addition to the energy savings of Low E Glass, if you install Low-E windows, you’ll keep out those harmful rays that fade your furniture and other belongings. Your things will look better, longer.

Is it time to replace? How do you know?

Here are some clues that will help you decide whether to replace or repair.

  1. Drafts: A cold draft in the winter or heat in the summer, means your windows aren’t doing their job. If you have old single pane windows, switching to dual pane windows will help you stay more comfortable + lower your utility bill.
  2. Foggy windows.  If you have older dual pane windows, you make notice condensation or a fog between the panes. The seal has failed and, unfortunately, the windows should be replaced.
  3. A flickering flame.  Hold a lighter or candle by your windows.  Wondering if you have dual pane windows?  If you see two or more flames reflected, you do.  If the flame flickers, there’s air coming in – hot air in the summer and cold air in the winter. It’s time to either replace the windows – or, if they are dual pane windows in good condition, it might just be time to upgrade to more energy efficient windows with Dual Pane Low E Glass