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Forced Air

  • Ultraviolet Lamps and Improved Air Quality

    Are ultraviolet (UV) lamps in an HVAC system an effective way to disinfect the air and improve air quality?

     
  • Nest Labs. The Nest Learning Thermostat monitors homeowner behaviors and preferences to create a customized heating and cooling schedule. It learns residents personal schedules in a week and automatically adjusts heating or cooling when the home is vacant to save energy. An Energy History function shows how much energy has been saved. In addition, users can change the temperature, adjust their schedule, and check energy usage via laptop or smartphone. www.nest.com.

    Learning Thermostat

    Nest Labs. The Nest Learning Thermostat monitors homeowner behaviors and preferences to create a customized heating and cooling schedule.

     
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    Cordless Jobsite Forced-Air Heater

    Warm up to 800 square feet for up to 12 hours with this portable propane unit.

     
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    Retrofitting a Heat-Recovery Ventilator

    The challenges are finding a good place for the unit and installing the ductwork without butchering interior finishes.

     
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    Ductwork That Works

    Air distribution is the weak link in many heating and cooling systems. Good ductwork is key to HVAC performance, yet all too often this vital part of the system is underexamined, bringing the energy performance of the home to surprising lows. Ted Cushman describes how the industry pros detail their...

     
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    Air Leaks: Hidden Moisture Movers

    Along the coast where wind-blown rain is a regular weather feature, it's no surprise to builders that the exterior of a home must be carefully detailed to manage water. Properly installed housewrap and flashing are the key elements of an effective water-resistive barrier. But rainwater is not the...

     
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    Rebuilding the Gulf: Cooling Strategies for the Gulf Coast

    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"...

     
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    Air Conditioning for Humid Climates

    Balancing cooling with humidity control is a tough job in the coastal South. A North Carolina hvac pro explains how the latest generation of cooling equipment meets the challenge.

     
  • Installing High-Velocity HVAC

    Streamlined ductwork, flexible vent placement, and efficient year-round performance make a strong case for high-velocity HVAC, says this veteran installer.

     
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    Pressure-Testing Ductwork

    Everyone talks about the importance of sealed ductwork, but the only way to be sure a new system measures up is to test it.

     
 
 
 
 
JLC Field Guide to Decking