The National Electrical Manufacturers Association (NEMA) published NEMA DC 3-2013
Residential Controls—Electrical Wall-Mounted Room Thermostats
NEMA DC 3 Annex A-2013
Energy-Efficiency Requirements for Programmable Thermostats.
NEMA DC 3 covers self-contained, electrical and electronic, wall-mounted room thermostats. This standard may be downloaded at no cost or purchased in hardcopy on the NEMA
website for $61.
NEMA DC 3 Annex A contains the performance requirements for programmable thermostats described as energy-efficient. This document may be downloaded at no cost or purchased in hardcopy format on the NEMA
website for $42.
The National Electrical Manufacturers Association (NEMA) represents nearly 350 electrical equipment and medical imaging manufacturers at the forefront of electrical safety, reliability, and resilience, as well as efficiency and energy security. Our combined industries account for 360,000 American jobs in more than 7,000 facilities covering every state. Our industry produces $106 billion shipments of electrical equipment and medical imaging technologies per year with $36 billion exports.