Here's why you should insulate outlets in your home

by Ann Hayward 01/13/2025

graphic about insulating outlets

If you've ever noticed cold air leaks while plugging something in, it might be time to insulate outlets in your home. Both electrical outlets and light switches have the potential for air leakage if not properly sealed. While the amount of air seems tiny, it can definitely add up on your energy bills.

Air gaps are energy drains

If you’ve taken off the cover plate on the outlet switch, you've probably noticed a space in the wall where you can store a power outlet. This unused space in the exterior wall lets the airflow in from the outside with or without the cover plate attached.

Foam outlet insulation

One solution to leaky outlets is to use foam gaskets. These gaskets fit underneath the cover plate and extend beyond the edges to prevent airflow. Some homeowners use spray foam insulation as an alternative to gaskets. 

Whether you choose spray foam or a foam outlet gasket, this is a common and affordable way to seal the gaps.

Sealing junction boxes

While foam does make a difference, the most efficient way to prevent warm air from moving in or out of your walls is to also seal the junction box. You can do this by using spray foam inside the empty spot behind the cover plate. Make sure to use non-expanding foam, as expanding foam can be a fire hazard.

This is only a basic guide to air seal electrical boxes at home. Always turn off the power before tinkering with your outlets, and consult a licensed electrician for guidance.

About the Author
Author

Ann Hayward

Born in Philadelphia and raised in the suburbs, Ann Hayward got her Pennsylvania real estate license at age 18 even before going to college. This second-generation real estate professional followed in the footsteps of her father and two uncles, inheriting their passion for the business. Licensed in DC, Maryland and Virginia, Ann is accomplished in her career, with numerous designations including SFR, SRES, PSA, WHC, and multiunit Housing Development Finance Professional (HDFP) from the National Development Council. She specializes in Prince Georges and Montgomery Counties, Northern Virginia and Washington, DC, all jurisdictions where Ann has lived and knows very well. In addition to her professional expertise, she owns and manages personal investment property, understands and has been involved in the renovation/remodeling process, and has great resources which she shares with clients. When you hire Ann to represent you, she will make your buying or selling experience an enjoyable, rewarding one. Her compassion, sensitivity to her clients’ needs, eye for detail, and ability to see the big picture when guiding you through a purchase or sale are unique assets that will ensure your success. A diverse and relevant background also gives Ann a distinct edge. For 30 years, she worked in fast-paced, high-pressure television and theatrical production, attaining the highest achievement – DGA membership as a Director, and as an award-winning staff and freelance writer. Her keen audio visual skills and design sense benefit sellers in marketing their properties, and are invaluable in helping buyers see the potential of space. A true renaissance woman, Ann was also an income tax professional and office manager for H&R Block, so she thoroughly understands the tax and financial implications of acquiring and selling real estate. Her superior organizational skills are further evidenced as owner of a downsizing/professional organizing business, Managed For You, which allows her to connect with everyone from millennials to boomers and seniors, whether for small space planning or assisting with major decluttering and transitioning. Ann holds an AB in American History from Simmons College, Boston, plus attended Robert Wagner Graduate School of Public Administration where she was a candidate for Doctorate. She additionally studied Film Direction at the American Film Institute in LA, and was a Stanford University post-graduate Professional Journalism Fellow. Personally, Ann is an avid if not very good golfer, and the co-founder of a nonprofit 501c3 organization offering educational guidance, tutoring and counseling for youngsters from elementary school through college admission. She sits on the board of trustees of a nonprofit educational film production corporation as well. (202) 494-6252 [email protected]