In the market for laundry, high efficiency washers are everywhere. High efficiency front and hybrid top loading machines use turbidity sensors to measure how dirty your clothes are and use energy and water as needed.
High efficiency washers also have higher spin speeds than ever before. They spin your clothes almost dry to avoid long dry times.
Up until the heat pump dryer was introduced, dryers were not really even rated by EnergyStar for efficiency. My recommendation before the heat pump was to buy a washer with a high spin speed.