Energy management: A guide to choosing the right low-E film option

by Pierre C. Rumpf 06/09/2025

Adding window film or special energy-efficient glass is an excellent way to reduce your monthly utility bill and regulate your home temperature. Both ultraviolet and infrared light may have a big impact on your energy bill, but with low emissivity, or low-E upgrades, you can enjoy notable energy savings.

Here is a basic guide to increasing your energy efficiency with low-E options:

What is low-E film?

Low-E window films decrease the amount of UV and infrared rays that pass through your windows. This film regulates the light and temperature of a space while still allowing natural light to shine through.

Low-E glass vs. low-E window film

Low-E glass can save you money. As it reduces UV rays entering the home, it also starts reducing your energy bill. Low-E film is a cheaper alternative, which can be a great project for DIY lovers. Low-E film will add an extra layer of protection in addition to what newer windows already provide. 

Low-E film for different climates

If you live in a colder climate, the solar heat gain coefficient (SHGC) of your glass or film should be higher. SHGC is the amount of solar radiation that can permeate through a window. 

Installing low-E film or windows allows you and your household to enjoy outside light without extra UV rays. Not only will they regulate the heat of your space, they’ll help you save energy.

About the Author
Author

Pierre C. Rumpf

Broker Profile: Pierre comes from a diverse background. His adolescent and early adult years found him working for his father, a renowned structural engineer, and his brother, an architectural designer and general contractor. His knowledge of construction design (architectural & structural) and practices is significant. He coupled his construction background with his considerable sales experience, by becoming licensed to sell real estate in Massachusetts in 1986.

Pierre is also a licensed Attorney in the Commonwealth, who formerly worked for the Massachusetts Attorney General’s office as a litigator in the Victim & Witness Assistance Division of the Family & Community Crimes Bureau, litigating cases involving victims of violent crime, and since then has had his own legal practice.

For decades, Pierre has excelled in helping buyers of real estate find that condo, single-family, multi-family, lot of lands, or commercial property they desire to buy, or by effectively marketing his clients’ properties to sell their property for the most amount of money possible. His professional background embodies the ideal combination of construction, sales, negotiating, and contract drafting, which is essential to actualizing his clients’ goals and/or dreams. He does all of this with attention to detail, integrity, and success.

Since 1995, PCR Realty has helped buyers and sellers make their transactions as successful as possible. Using a consultative approach, PCR Realty approaches each experience as a unique opportunity for its clients. As a full-service real estate brokerage firm, PCR Realty provides leading-edge services for buyers & sellers.

When it comes to successfully navigating today’s complex real estate market, you need to work with someone who has the experience and commitment to see it done right. PCR Realty excels at matching buyers to sellers. From state-of-the-art marketing to an experienced broker, PCR Realty works diligently to far exceed your expectations. PCR Realty invites you to learn more.