Jackson Systems is celebrating the No. 4,007.

That is the company’s ranking on this year’s Inc. 5,000 list, where the magazine names the fastest-growing private companies in America.

“We are pleased to receive this recognition for the second year in a row,” said Tom Jackson, CEO of Jackson Systems. “We have worked extremely hard to make Jackson Systems what it is today. This honor is great motivation to keep us pushing forward to develop, manufacture and distribute the best HVAC control products in the industry.”

Each year, Inc. publishes the country’s top 5,000 fastest growing private companies. The list is ranked according to percentage of revenue growth over a four-year period.