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Q: Even though I followed the manufacturer's specifications when I installed the 2-gallon thermal expansion tank and check valve for my customers' domestic hot-water system, they still complain of "clicking" noises, mainly during the heating season. Does
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Fight rising energy costs
New York City – The cost of energy keeps rising — but fortunately, energy experts like Marc Zuluaga keep finding new ways to save.
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Save more on energyDunn Development used a few new ideas to save energy at aproject in Harlem.
New York City – Many apartment managers spend too much on heating hot water for their residents, according to Marc Zuluaga, an engineer for Dunn Development Corp., based here.
Q: I recently learned that building codes in my state now require that newly installed water heaters be set at 140°F. But up until now, with concerns about energy conservation and scalding safety, 120°F was the normal setting. Why the change?
RO water filtration; laundry rooms; showers
In the hot, humid South, it's not enough to install high-efficiency air conditioning. Dedicated dehumidification, along with impeccable attention to sealing the building enclosure, is required. Researchers at LSU exhibit three practical systems that balance performance and cost in the "LaHouse"...
Pneumatic fasteners; skylights; instantaneous water heaters
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Q. We recently had to replace our relatively new gas-fired water heater when its internal flue tube collapsed, ruining the thermostat and causing hot combustion gases to spew out the front. The installer, who claimed that the water heater was ruined by thermal expansion, added a thermal-expansion...
Compact tankless water heaters free up valuable space and save energy, but sizing and installation require a unique approach.
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Using PEX in solar water heating; solar hot-water storage; hot-water recirculation; leak testing