ST. LOUIS, MO — Nestled in a mix of homes and businesses near a busy St. Louis freeway is an inconspicuous building, a labyrinth of multileveled flat roofs, with a simple lettered name on the brick ...

Dear Jim: After the heat wave we have had recently, I think we need to add central air-conditioning. We have electric baseboard heating, so there are no ducts. What are the simplest central system ...

Ductless mini-splits have become increasingly prominent in apartments or condos that were originally built without air conditioning. This is mostly due to the compactness of the unit and the ease of ...

Dear Jim: We are considering installing a heat pump or central air conditioner. We currently have radiant heating. I have heard mini-duct systems are very comfortable and quiet. How do they work? Jack ...

A small-duct high-velocity system was used in this Johns Island, SC house. The ducts vents can hardly be seen. The house was designed by Architect Sam Rashkin. Energy Star estimates that 20% to 30% of ...

Expert DIYer April Wilkerson installs a ductless MrCool mini split system herself to heat and cool her shop efficiently.

Dear Jim: We are considering installing a heat pump or central air-conditioner. We currently have radiant heating. I have heard mini-duct systems are very comfortable and quiet. How do they work? — ...

This mini-split system was used in several rooms in this 1840 square foot house in Bainbridge Island, WA. The house was designed by Davis Studio Architecture and Design. The mini-split system was from ...

Q. After the heat wave we have had recently, I think we need to add central air-conditioning. We have electric baseboard heating, so there are no ducts. What are the simplest central system options ...

Dear Jim: We are considering installing a central air conditioner. We currently have radiant heating. I heard mini-duct systems are comfortable and quiet. How do they work? Mini-duct systems are ideal ...