York County taxpayers are guaranteed to save more than $237,000 per year in utility payments under energy efficiency projects approved by county commissioners Wednesday.

The county will spend $2.47 million to make the changes, but the projects will pay for themselves in 10.2 years, said county facilities director Scott Cassel.

Projects include heating and air-conditioning improvements at the county archives building and Emergency Services Center, more interior and exterior lighting upgrades at various facilities, transformer replacement and the repair of a water leak that's causing the York County Prison to gush between four and 35 gallons of water per minute, Cassel said.

Harrisburg-based McClure Co., the company performing the work, will make up the difference if the changes don't save at least $237,000 per year, Cassel said.

But the company has said it's already exceeding the guaranteed savings it gave the county as a result of $6.1 million in other facilities upgrades made over the past couple years.

McClure is expected to start working on the projects in April.

- Reach Christina Kauffman at ckauffman@yorkdispatch.com.