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Domestic Hot Water

  • Cost-Cutting Heat-Pump Water Heater

    The Geyser heat-pump water heater connects to the tank of an existing water heater or any similar insulated storage tank but runs more economically than standard electric or gas-fired units, says the manufacturer.

     
  • Retrofitting a High-Tech Heating System

    This design uses a gas boiler and solar thermal collectors as heat inputs, and incorporates an HRV into the air handler.

     
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    Products

    Snow-melting stair mats; modulating gas fireplace; efficient heat-pump water heater; permeable pavement; sump pump; more

     
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    Letters

    Tree roots and foundation cracks; code logic; mixing plastics; site-built arched trusses

     
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    Home Performance Contracting

    Careful diagnostic testing is the key to cost-effective energy upgrades.

     
  • Letters

    Safe installation of basement water heaters; galvanized pipe for gas; painting old porch floors

     
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    Turning Blight into Sustainability

    LA QUINTA, CALIF.—National Community Renaissance recycled a blighted 92-space mobile home park into an 80-unit sustainable affordable housing development, with the help and the vision of the city of La Quinta.

     
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    Innovative Products 2009

    A roundup of tools and materials found on the floor at JLC Live in Providence, R.I .

     
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    Condensing Storage Water Heaters

    These heaters are up to 96 percent efficient and typically easier to retrofit than tankless models .

     
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    Products

    Anti-sweat valve for toilets; cold-weather spray foam; solar-powered dimmer for tubular skylights; standard-width high-performance range; faux slate roofing; more

     
 
 
 
JLC Field Guide to Decking