•Aaon Inc.(Tulsa, Okla.) increased prices 2 to 5 percent on all products, effective June 1.

•Lennox Industries Inc.(Dallas) increased prices 4 to 6 percent on residential products, effective June 30.

•Allied Air Enterprises(Columbia, S.C.) increased prices 4 to 6 percent on residential products, effective June 30.

•Worthington Cylinders(Columbus, Ohio) increased cylinder prices 1 percent on small high pressure; 18 to 22 percent on intermediate high pressure; 18 percent on large high pressure; and 2 to 5 percent on acetylene, effective June 1.

Publication date:05/26/2008