Mini-splits promised to fix home comfort — but the boom created new headaches.

Mini-split heating and air-conditioning systems can boost your home’s energy efficiency, but they come with trade-offs, air quality experts say. These small, electric systems are replacing traditional ...

A heat pump heats and cools your home, functioning like a combined furnace and central air conditioner. Because it absorbs and moves heat from the air, it is exceptionally energy-efficient and ...