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 ...

If you want to add an air conditioning system to your home without having to install ducts inside your walls and ceilings, you've probably considered a mini-split system. The mini-split air ...

Q: I am one of a growing number of Americans with a new mini-split heat pump. I have no idea how to maintain it or use it efficiently. I’ve talked with many other owners and we are all largely in the ...

In a column published in July, I wrote about the Mitsubishi mini-split heating/air conditioning system that was just installed in my house. In addition to the required outdoor heat pump, there is a ...

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 ...