"I gave up my place, and when I came to visit Kelly in California, she showed me this house. It just felt right." Kelly Kai (left) and Catalina Monsalve (right) relax in the Morongo Valley home ...

The majority of new houses have used forced-air heating systems since the 70s, but heat pumps have been on a steady rise. Most homes have been heated by gas or electricity. Electricity took a big ...