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For the first time, Energy Star is decertifying an entire category of product—the programmable thermostat—because it doesn’t reliably save energy (see “Energy Star Changes Approach to Programmable Thermostats,” p. 10). Field studies in diverse climates demonstrated that homes with programmable thermostats used no less—and often more— energy than similar homes without the smart thermostats. As a result, the programmable thermostat will no longer receive ...
Question for the Editors
Could you please answer a question for me? Living off the "grid", am I better off using flourecent 12 volt dc lights or 120 volt ac flourecent lights through my inverter?
Ohm's law seems to say I will use less power through the inverter, with a 26 watt 120 volt light using .2166 amps with a .5 amp inverter draw for a total of .7166 amps, and a 26 watt 12 volt DC light drawing 2.166 Amps. Somehow logic ...
Assemblymember Lloyd Levine (D-Van Nuys), the Chair of the Assembly’s Utilities and Commerce Committee, plans to introduce legislation - the How Many Legislators Does it Take to Change a Light Bulb Act - to ban the sale of incandescent light bulbs in California by the year 2012.
Says Levine: "Incandescent light bulbs were first developed almost 125 years ago, and since that time they have undergone no major modifications. Meanwhile, they remain incredibly ...
Question for the Editors
I have a problem with this high efficiency furnace (Carrier Natural Gas Furnace Model 58 MVP) which has been installed in my home for 3 years.
Once each year, and occasionally twice each year, my furnace has shut itself off because the exhaust vent and the air intake have frozen up. I live in Saskatchewan where we have very cold winter temperatures and accompanying wind making the wind chill a factor.&...
Several unrelated matters related to compliance with energy efficiency regulations crossed my desk recently (see “Caveat Emptor,” p. 12). These incidents illustrate that compliance—or failure to comply—with a regulation is not always objective. Indeed, one could say that there is a spectrum of “compliance.”
First there is outright fraud. This was probably the case where the Federal Trade Commission (FTC) ordered an insulation company to desist from its ...
The Oklahoma Department of Commerce, State Energy Office now offers its "Best of Building Science" online training for free.
Featured in the training are lessons learned from the Department Of Energy's Building America program, delivered by some of the nation's foremost building science professionals. They incorporate content from such sources as the Affordable Comfort conferences, Home Energy magazine articles, and the DOE Building America partner technology reports.
Presented in a video-based "in ...
America's water supplies are precious but not unlimited. Every drop counts. Water is the lifeblood for families, communities, and ecosystems. Using it efficiently is everybody's business. Increasingly, water and wastewater utilities, industry, and agriculture are relying on water efficiency as a low-risk and low-cost option to help meet growing demands.
Faced with rising demands for water and an increased need for wastewater treatment, it's just common sense to use the water that we have as ...
The Cost Of Air Tightening May Go Up
by Max Sherman
I grew up in an old, leaky house. I’ll bet a lot of Home Energy readers did too. When the wind blew, you could almost feel it inside. No one worried about getting enough ventilation then, though. After all, the Latin root of “ventilation,” ventilare, means to expose to the wind.
Houses were said to breathe. Despite the back-to-nature feel ...
Formed in 2005, Partnerships for Home Energy Efficiency (PHEE) is a joint effort by the US Department of Energy, the US Environmental Protection Agency and the US Department of Housing and Urban Development to reduce the energy consumption of the average U.S. home by 10% by 2015.
Currently, US residents spend more than $160 billion a year to heat, cool, light and live in their homes. US residences account for approximatley 21% of our country's energy use, and ...
New Resource Bank and SunPower have teamed up in an effort to make residential solar systems more accessible to California homeowners.
New Resource Bank, a new commercial bank in San Francisco that finances efficient and sustainable resources within the community, will now provide simple and one-step financing to customers who want to install SunPower residential solar systems.
The bank's financing program offers long-term financing over a 25-year loan period that matches SunPower's solar panel warranty. ...