Six of the seven reporting regions experienced double digit growth. “The performance is even more impressive when you see it is being compared to strong results in September of 2013,” Loftus said.

“A positive contributor to the September results was the strong third quarter performance of GDP,” said Danielle Marceau, senior economist, HARDI. “Output increased 0.88 percent from the second quarter. This was the second strongest second-to-third quarter increase in the last decade.” The positive business cycle bounce is reflected in strong housing starts that contributed to the vigorous sales results this month.

The Days Sales Outstanding or DSO, a measure of how quickly customers pay their bills, declined to the normal annual seasonal low of 45 days. The recent seasonal pattern indicates a gradual increase is likely to reach the low 50s by early next spring.

HARDI members do not receive financial compensation in exchange for their monthly sales data and can discontinue their participation without prior notice or penalty. Participation is voluntary, and the depth of market coverage varies from region to region. An independent entity collects and compiles the data that can include products not directly associated with the HVACR industry.