Value-added Retrofit Distribution

We Deliver on Promises and Operate with Integrity

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National Efficiency Supply is not your average retrofit distributor


NES is your partner for efficiency and smart building products for your facilities. We have successfully supplied material for the retrofit of over 50 million square feet of space with the latest commercial lighting and controls, evse, and heat pumps in buildings such as schools, businesses, museums, and municipal buildings through ESCOs (Energy Service Companies) and direct to savvy end-users. We understand the problems these facilities have and can improve the building's user experiences while reducing operating costs by specifying proper retrofit products.

NES specializes in providing the best in commercial lighting and controls, electric vehicle chargers, and light commercial heat pumps.  We can provide an audit of your space to find out exactly how much you could save by simply retrofitting your older equipment.

When you work with NES, you're getting decades of experience behind you. Not only are we distributors, but we also have expert knowledge of every product we sell and recommend what will work best for you. Additionally, help you realize savings via utility efficiency programs and rebates offered by states. Contact us today to start the process.


Our Values

  • ​We deliver on promises and operate with integrity

  • We appreciate every customer, vendor and employee

  • We adapt and innovate to meet our customers’ needs

  • We promote efficiency in all aspects of a project