In the coming weeks Representative John Conyers (D-MI) plans to introduce in the House of Representatives the United States Toxic Mold Safety and Protection Act, proposed national legislation designed to address the public health impact of mold.
Archeological evidence confirms that humans used geothermal resources more than 10,000 years ago. Today, engineers have created technologies that allow facilities to search miles below the earth’s surface to seek out geothermal energy.
One such development is the Mammoth Pacific geothermal facilities located in the California Sierra Nevada Mountains.
When the U.S. Department of Energy (DOE) first started its Weatherization Assistance Program, which is administered by the individual states, it consisted of “lots of caulk and not much else,” said Duane Griffus. Today, the program is much more than that.
It seems hvac contractors are still a little unsure how much of a margin of error to allow themselves when they bid on geothermal (ground-source or water-source) heat pump projects, according to Steven Bauman, a project consultant for New Jersey electric utilities.
The telephone is starting to ring again. And, in this weather-dependent business, you’ve started getting more work. Now is the time to do the things to even out seasonality and get ready for the times when the telephone isn’t ringing again.
The big push is on to replace R-22 unitary air conditioners and heat pumps, and it looks like the industry has really and truly decided that R-410A systems are “it.” This article offers an overview of some of the issues related to R-22 and -410A in the field: operating pressure differences, oil characteristics, and temperature glide.
When unitary heat pumps and air conditioners using R-410A were introduced to hvac contractors, many were skeptical. They had been working with R-22 systems for so long, the change seemed unreal. As recently as last year, system manufacturers themselves, though pleased with the new refrigerant’s efficiencies, were hesitant to comment on how contractors were adapting. This year they are speaking out, and the news is good.