How Old Doors Could Be Driving Up Your Energy Bills

Most homeowners think of windows when it comes to energy loss, but doors can have just as big an impact. An aging or poorly sealed door lets conditioned air escape and outside air creep in, forcing your heating and cooling system to work harder. Over time, that extra strain shows up on your monthly energy bills.

Why Older Doors Waste Energy

Worn Seals and Weatherstripping
As doors age, the rubber seals and weatherstripping that keep drafts out begin to crack, flatten, or pull away. Even small gaps can cause significant energy loss.

Warped or Damaged Frames
Wooden doors are especially prone to swelling, shrinking, and warping over time. When the frame is no longer square, the door cannot close tightly, leaving gaps that let in air.

Single-Pane Glass Inserts
Many older doors with glass panels use outdated, single-pane glass. These offer little insulation compared to today’s energy-efficient, double- or triple-pane options.

Outdated Materials
Older doors were not built with the same energy performance standards as modern designs. They lack insulated cores, advanced finishes, and thermal breaks that improve efficiency.

The Cost of Ignoring the Problem

Even if the gaps around your doors seem small, the energy loss adds up quickly. Drafts mean your furnace or air conditioner runs longer to keep the house comfortable, raising energy bills season after season. You may also notice cold spots near the entryway in winter or unwanted heat seeping in during summer.

The Benefits of Upgrading Your Doors

Replacing older doors with modern, energy-efficient designs can make an immediate difference. New doors are engineered with insulated cores, high-performance glass, and improved seals that prevent air leakage. Beyond lowering energy costs, they enhance curb appeal, boost security, and make your home more comfortable year-round.

How Window Makeover Can Help

At Window Makeover, we do more than windows, we also help homeowners upgrade doors for better efficiency and style. Whether you are dealing with drafts, outdated glass, or a worn-out frame, we can recommend the right replacement to fit your home.

If your energy bills seem higher than they should be, it may be your doors to blame. Contact Window Makeover today to schedule an inspection and explore options for energy-saving replacements.