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.
Electrical Manufacturers Association (NEMA) represents nearly 350 electrical
equipment and medical imaging manufacturers that make safe, reliable, and efficient products
and systems. 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.