CHICAGO — With model building codes mandating tighter and tighter ductwork, and with homeowners and building owners desiring increasingly higher efficiencies from their ducted systems, many new ...

The cost of installing a central air conditioning system varies widely depending on your home’s size, the type and efficiency of the unit, and whether ductwork is already in place. Some or all of the ...

HIGHSPIRE, PA — Are the terms “state-of-the-art” and “value engineered” compatible in today's world of hvac design? Gannett Fleming Inc., a consulting engineering and construction management firm in ...

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 ...