Shopping for a new air conditioner and confused by the "ton" rating? It's not about weight. Discover the historic reason ...

"The psychrometric tables and charts and much of the text material have previously appeared in themagazine Heating, piping and air conditioning."--Pref. "References": p. 445-446.

Our engineer scored nine models from ProBreeze, Dreo, Meaco and more – but only five passed his stringent tests ...

If you’re considering a portable air conditioner, the first question to ask is whether it’s truly impossible to use a window ...