Get an Estimate

Energy Efficient Windows

new casement window
What makes home window designs energy-efficient?​ Do you need to replace your standard windows to make them ​more​ ​energy​-​efficient​? Peak Custom Remodeling has the answers!

Standard and Energy-Efficient Designs

When it comes to energy efficiency, a “standard” window design usually has one layer of glass, offering less insulation from weather and noise than double-layer glass.

A double layer of glass is the main feature of an energy-efficient window design—sometimes windows have a third layer, too, but that is rare for most homes. An insulating pocket of gas between the two layers keeps heat out in the summer and inside during the winter, reducing your heating or air conditioning use. This design saves on energy costs and can reduce your use of fossil fuels.

Can You Make Standard Windows More Efficient?

Yes, you can still take measures to increase the efficiency of standard windows if window replacement is not in your budget or if you plan to sell your home soon and don’t want to put much money into costly renovations.

Here are 5 ways to make standard windows more efficient:

  • Removable storm windows can add a second layer of glass, helping to keep air from leaking in or out of the house.
  • Caulking and weather-stripping can also help reduce air leakage.
  • Window treatments and coverings can help keep out winter drafts or provide shade from the summer heat.
  • Consider covering window interiors with clear plastic sheeting.
  • Reflective films on south-facing windows can help reduce overheating.

When Are Energy-Efficient Designs a Better Option?

Replace standard windows with more energy-efficient options if any of the following conditions apply:

  • You do not see satisfactory improvement from the “standard window” suggestions above.
  • Your windows are old and ready for replacement.
  • You intend to stay in your home for the long term.

Energy-efficient windows are good investments even if your home is newer or budget constraints aren’t a priority. According to EPA estimates from, typical homeowners save between $101 and $583 annually when replacing single-plane windows with ENERGY STAR-certified double-pane windows.

For climates with both hot and cold seasons, including Maryland, energy-efficient windows should have low U-factors and low SHGCs for the best energy savings. The Energy Star City Savings guide estimates Baltimore homeowners will save $263 yearly when upgrading from single-pane windows.

Looking for New Windows?

Get energy-efficient windows from reliable experts. Contact your local window contractor, Peak Custom Remodeling for help getting started!


Third Party Reviews Updated in Real-Time