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Domestic Hot Water

  • Q&A: Shower Pipe Knocking

    Q. I am having a problem with a shower valve in a bathroom remodeling project. When you turn the water all the way to hot and then back off to around the middle of the temperature range, you get a pulsating water flow from the shower head and severe, loud knocking from the shower pipes in the wall...

     
  • Indirect-Fired Water Heaters

    In homes heated with a boiler, an indirect-fired tank can provide domestic hot water reliably and efficiently. A pair of industry experts explain what to look for.

     
  • Q&A: Excavating in Frozen Ground

    Q. What’s the most cost-effective way to thaw a site for excavation? We are building a 16x24-foot addition with a crawlspace underneath, and the frost is already 12 inches deep.

     
  • Image

    Q&A: What’s the Dewpoint?

    Q: When people refer to the dewpoint in a wall assembly, are they talking about a location or a temperature? How is the dewpoint calculated?

     
  • Q&A: Fuel Cost Comparison

    Q: A customer asked me how to compare the cost of different heating fuels (natural gas, propane, oil, and electricity). Can you provide a chart with this information?

     
  • Backfill: One More Reason to Quit Smoking

    Beware gas buildup in water heaters

     
  • Resources

    Hydronic heating guide, basic engineering text, more

     
  • Trade Talk: Gas-Fired Air Conditioning

    Gas-fired air conditioning

     
  • Designing & Testing Forced-Air Systems

    Here are steps you can take to ensure proper sizing and installation of air-conditioning and forced-air heating. Included is a list of detailed specifications that will guarantee state-of-the-art performance.

     
  • Trade Talk: When a Flue Is Too Big

    When is a flue too big to vent an appliance safely?

     
 
 
 
 
JLC Field Guide to Decking