New, more energy-efficient appliances may cost you at the register, but the savings tend to catch up over time. Most people think of heat pumps or solar panels when they hear "long-term energy-saving ...

I did the math to see how much a new fridge saves compared to a 10-year-old model, and how long it'll take to pay back the upfront cost. John Carlsen has more than a decade of experience testing and ...