Households comparing ceiling fans need to know what a promised saving actually compares. DOE’s January 19, 2017 standards rule projected positive average life-cycle cost savings across five product classes. That result was a model, not a measurement of household bills. Its average excluded consumers with zero life-cycle savings, so the positive averages could not be read as a promise that every buyer would gain. [2017-00474]

The model reported life-cycle savings in 2015 dollars against the efficiency distribution expected without new standards. Simple payback was reported in years and used a different comparison: the least-efficient baseline product. The zero-savings exclusion belonged to the average life-cycle calculation, not the payback column. Those distinctions matter before a reader treats a dollar figure and a payback period as descriptions of the same purchase. [2017-00474]

A separate July 2016 test rule defined what efficiency measurement counted. Low-speed small-diameter fans used high and low speeds; high-speed small-diameter fans used high speed; large-diameter fans used up to five speeds. The integrated measure also included standby power. Its changes became mandatory for energy-use or efficiency representations on January 23, 2017, connecting advertised performance to a specified measurement basis. [2016-17139]

The standards expressed minimum airflow efficiency in cubic feet per minute per watt by blade span for covered products, with manufacture or import compliance scheduled for January 21, 2020. A January 31 notice moved legal effectiveness to March 21, 2017. Neither that delay nor the testing method demonstrated realized savings. Together, these DOE records distinguish measuring performance from projecting a household benefit. [2017-00474][2016-17139][2017-01958]

Source documents

  1. Energy Conservation Program: Energy Conservation Standards for Ceiling Fanshttps://www.govinfo.gov/content/pkg/FR-2017-01-19/html/2017-00474.htm
  2. Energy Conservation Program: Energy Conservation Standards for Ceiling Fanshttps://www.govinfo.gov/content/pkg/FR-2017-01-31/html/2017-01958.htm
  3. Energy Conservation Program: Test Procedures for Ceiling Fanshttps://www.govinfo.gov/content/pkg/FR-2016-07-25/html/2016-17139.htm