Sometimes a great deal on a house is just too good to be true, leaving you with a home in dire need of extensive—and expensive—repairs. Here's what to look out for.
Furnaces and air conditioners, or, more briefly, HVAC systems, have gotten far more efficient in the last decade or so. And now, with options like geothermal and radiant in-floor heat, homeowners can achieve efficiency, comfort and cost savings like never before.