York International Corp. (York, PA) reports record second quarter results. Net sales were $1.06 billion, 5.1% higher than the $1.01 billion reported for the same quarter of 1999. Gross profit of $245.4 million was 6% higher than 99. Net income was $45.7 million with diluted earnings per share of $1.20 vs. $1.01 for the prior year.

Eaton Aeroquip (Maumee, OH) has signed a letter of intent to purchase Frederick Duffield Pty Ltd. (Sydney, Australia), and its overseas operations, in a transaction for cash. Terms were not disclosed.

Invensys Building Systems (Rockford, IL) has been designated a corporate-approved provider for Marriott International and all Marriott properties in the United States and Canada.

United Dominion Industries Ltd. (Charlotte, NC) reports second-quarter net income before non-recurring items of $30.8 million, or 79 cents per share, on sales of $626.9 million. This compares to $27.5 million, or 69 cents per share, in last year’s second quarter on sales of $549.3 million, a 14% increase in both sales and earnings per share.

AAON, Inc. (Tulsa, OK) announces record net sales and earnings for the second quarter. Sales for the period climbed 22.4% to $38 million from $31 million for the corresponding period in 1999, while net income rose 37.5% to $3.3 million or $0.54 per share compared to $2.4 million or $0.38 per share for the same period a year ago.

Rittal Corp. (Springfield, OH) has updated its software tool to aid in the selection of climate control equipment for enclosures and has made it available for free on the company’s website at www.rittal-corp.com. Called Therm 3.1, the software can be used to determine an enclosure’s convective heat loss, cooling requirements, and potential climate control solutions.

Master-Bilt (New Albany, MS), a member of the Standex Foodservice Group, now offers a quick-ship program for its walk-in units, with five-day delivery service. Customers can order three different walk-in options. For more information, contact 800-647-1284;info@master-bilt.com(e-mail).

Master-Bilt also announces that it has attained a reliability rating of 99.59% on its remote refrigeration systems, one of the highest ratings in the industry, says the company.

Panasonic (Secaucus, NJ) reports that its ventilation fans now qualify for rebates from Vermont Star Homes, an energy conservation program.

Tecumseh Products Co. (Tecumseh, MI) reports that net income for the second quarter of 2000 amounted to $28.5 million or $1.47 per share compared with net income of $39.6 million or $1.95 per share in the second quarter of 1999.

Gibraltar (Buffalo, NY) has acquired Milco Limited Partnership (Holland, OH), a manufacturer of metal building products including registers, vents, and other products. Terms of the acquisition were not disclosed.

The employees of Weil-McLain (Michigan City, IN), a unit of United Dominion Industries, were honored by the company at a recent luncheon for completing 1999 with no lost-time injuries.