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 ...

The heat and humidity are killers this year. I need a central air conditioner that is quiet and controls the humidity level. How effective and efficient are mini-duct and high-velocity systems?

According to high-velocity cooling system manufacturer SpacePak, the following are reasons why high-velocity cooling is well-matched with radiant heating systems: High-velocity cooling is easily ...

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 ...

Dear Jim: I need a central air conditioner that is quiet and controls the humidity level. How effective and efficient are mini-duct and high-velocity systems? -- Barb S. Dear Barb: Actually ...

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 ...

For the past 50 years, engineers have been “designing” duct systems. Quite often, they were not actually designing the systems, but were sizing duct the duct according to some rule of thumb. The rules ...