Sera Systems, a Grapevine, Texas-based SaaS service for small-to-large-sized HVAC, plumbing, and other field service businesses, has closed an eight-figure Series B funding round.

The Series B funding is comprised entirely of private equity from the field service industry it serves—owners of home service businesses.

Billy Stevens, Sera CEO, and founder said the funding from industry insiders is a result of Sera’s continued strong growth and recognition of its unique ability to boost its customers’ operating margins by more than 40% within six months after installing Sera.

“As field service business owners themselves, these investors know better than anyone how effective Sera is,” Stevens said. “They fully appreciate the impact Sera is having on the industry, and they want to be part of it.”

Stevens said the Series B round was oversubscribed because demand was greater than the amount the company was looking for. “We actually had people calling us, so we increased the ceiling to help accommodate the demand,” he said.

The company’s field service management software is designed to ensure that higher efficiency results in increased profitability by incorporating each subscribing business’s financial data.

Sera System focuses on managing time, profit margin, cash flow, and membership plans using each client’s own data to boost financial performance and establish long-term business viability and growth.