The Heating, Airconditioning and Refrigeration Distributors International are reporting that North American HVACR distributor sales for June were up over 10 percent from last year.

The findings were published in its monthly TRENDS report (Targeted and Regional Economic News for Distribution Strategies).

This marks the fourth consecutive month in which overall distributor sales were up from the previous year. All of HARDI’s seven U.S. regions were up in June with four exceeding double-digit growth. Canada continued its strong run and remains the only HARDI region showing a running 12 months in the positive.

“The average 3 percent drop in annual sales is the smallest decline reported among HARDI members in over 14 months,” said HARDI’s chief economist, Alan Beaulieu of the Institute for Trend Research.

HARDI representatives said that the hot weather across most major U.S. markets has helped to fuel June’s numbers, but so too has the steadily increasing rate of sales of high-efficiency equipment. HARDI’s recent joint survey with J.P. Morgan Equity Research showed nearly a third of HARDI distributors reported having 16-SEER equipment make up more than 15 percent of their total unitary sales so far this season.

June’s sales TRENDS report also debuted a new indicator of distributor efficiency by reporting the month’s sales per employee by region and company size. This first month shows 2010 well ahead of year-end 2009 and 2008 levels, further reflecting the positive shift in product mix.