For about a year, Dauhn Minus has been struggling to pay her utilities bill, which, at times, she said runs well over $300. "That's a lot of money for an electric bill," said the 52-year-old West Palm Beach resident. The main reason their bill is so high is because the air conditioning unit is 15 years old and working overtime to cool their two-bedroom home. But it can't do the job properly since Minus' home wasn't energy efficient. "I would have my AC on at 70 degrees, but it was reading 85 degrees in my house," Minus said. "I was...