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More stories about Heat-Recovery Systems

  • 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.

  • Q&A: Leaky Air-Conditioner Coil

    Q: After replacing both a condensate pan and a pump, the plumber fixing my client's leaky air-conditioning coil finally determined that the problem was actually in the condensate drain. The drain's small trap was clogged with a mucuslike substance; unclogging it was a simple repair that took just a...

  • Condensing Storage Water Heaters

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

  • Products

    Windows; energy conservation

  • Heating a Home With a Tankless Water Heater

    Even in a cold climate, these efficient units can provide both domestic hot water and whole-house heating.

  • Efficiency Dos and Don'ts From an Energy Nerd

    With high fuel prices here to stay, now is the time to get it right.

  • Solar Hot Water 101

    Solar water heating has a proven record of cutting energy costs. Here's what you need to know to help customers choose the right system.

  • Ground-Source Heating & Cooling Gets Better

    Direct-exchange heat-pump technology is pushing energy efficiency through the roof, and because it requires far fewer feet of ground loop, systems can be retrofitted even on small lots.

  • High-End HVAC

    By Cheryl Weber. For years, M/I Homes has been touting its homes' energy efficiencies. Then three years ago, M/I Homes signed on with the EPA's Energy Star program, whose energy conservation standards are 30 percent higher than the 1993 Model Energy Code and 15 percent higher than state codes.

  • Problem-Solving Tools & Materials

    This year's collection of new products can help you work smarter and better.